ISO 16143-1:2014

Stainless steels for general purposes

ISO 16143-1:2014 specifies the technical delivery conditions for hot- or cold-rolled sheet/plate and strip for general purposes made of the most important corrosion-resistant stainless steel grades.

Aciers inoxydables pour usage général

Standards Content (sample)

INTERNATIONAL ISO
STANDARD 16143-1
Second edition
2014-05-15
Corrected version
2014-09-01
Stainless steels for general
purposes —
Part 1:
Corrosion-resistant flat products
Aciers inoxydables pour usage général —
Partie 1: Produits plats en acier résistant à la corrosion
Reference number
ISO 16143-1:2014(E)
ISO 2014
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ISO 16143-1:2014(E)
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© ISO 2014

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ii © ISO 2014 – All rights reserved
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ISO 16143-1:2014(E)
Contents Page

Foreword ........................................................................................................................................................................................................................................iv

1 Scope ................................................................................................................................................................................................................................. 1

2 Normative references ...................................................................................................................................................................................... 1

3 Terms and definitions ..................................................................................................................................................................................... 2

4 Designation ................................................................................................................................................................................................................ 2

5 Information to be supplied by the purchaser......................................................................................................................... 2

6 Classification of grades .................................................................................................................................................................................. 3

7 Requirements .......................................................................................................................................................................................................... 3

7.1 Manufacturing process..................................................................................................................................................................... 3

7.2 Delivery condition ................................................................................................................................................................................ 3

7.3 Chemical composition ...................................................................................................................................................................... 3

7.4 Susceptibility to intergranular corrosion ........................................................................................................................ 4

7.5 Mechanical properties ...................................................................................................................................................................... 4

7.6 Surface quality ......................................................................................................................................................................................... 4

7.7 Internal soundness .............................................................................................................................................................................. 4

7.8 Dimensions, tolerances on dimensions, and shape ................................................................................................. 4

7.9 Calculation of mass and tolerance of mass ..................................................................................................................... 5

8 Inspection, testing, and conformance of products ............................................................................................................ 5

8.1 General ........................................................................................................................................................................................................... 5

8.2 Inspection and testing procedures and types of inspection document ................................................. 5

8.3 Specific inspection and testing .................................................................................................................................................. 6

8.4 Test methods ............................................................................................................................................................................................. 6

8.5 Retests ............................................................................................................................................................................................................ 7

9 Marking .......................................................................................................................................................................................................................... 7

Annex A (informative) Guidelines for further treatment (including heat treatment)

in fabrication .........................................................................................................................................................................................................36

Annex B (informative) Designations of the steels given in Table 1 and of comparable grades

covered in ASTM, EN, JIS, and GB standards ..........................................................................................................................43

Annex C (informative) Comparison list of abbreviations for process route/surface finish of flat

products given in Table 3 covered in ASTM and JIS standards ..........................................................................47

Annex D (informative) Applicable dimensional standards ........................................................................................................49

Bibliography .............................................................................................................................................................................................................................50

© ISO 2014 – All rights reserved iii
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ISO 16143-1:2014(E)
Foreword

ISO (the International Organization for Standardization) is a worldwide federation of national standards

bodies (ISO member bodies). The work of preparing International Standards is normally carried out

through ISO technical committees. Each member body interested in a subject for which a technical

committee has been established has the right to be represented on that committee. International

organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.

ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of

electrotechnical standardization.

The procedures used to develop this document and those intended for its further maintenance are

described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the

different types of ISO documents should be noted. This document was drafted in accordance with the

editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of

any patent rights identified during the development of the document will be in the Introduction and/or

on the ISO list of patent declarations received (see www.iso.org/patents).

Any trade name used in this document is information given for the convenience of users and does not

constitute an endorsement.

For an explanation on the meaning of ISO specific terms and expressions related to conformity

assessment, as well as information about ISO’s adherence to the WTO principles in the Technical Barriers

to Trade (TBT) see the following URL: Foreword - Supplementary information

The committee responsible for this document is ISO/TC 17, Steels, Subcommittee SC 4, Heat treatable and

alloy steels.

This second edition cancels and replaces the first edition (ISO 16143-1:2004), which has been technically

revised.

This corrected version of ISO 16143-1:2014 incorporates the following corrections: in Tables 1, 6, A.3

and B.1, the steel designation name “X2CrNbCu22” has been corrected to “X2CrTiCu22”; normative

reference ISO 15510 has been updated to the latest edition (2014); some cross-references and footnotes

have been corrected or deleted.

ISO 16143 consists of the following parts, under the general title Stainless steels for general purposes:

— Part 1: Corrosion-resistant flat products
— Part 2: Corrosion-resistant semi-finished products, bars, rods and sections
— Part 3: Wire
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INTERNATIONAL STANDARD ISO 16143-1:2014(E)
Stainless steels for general purposes —
Part 1:
Corrosion-resistant flat products
1 Scope

This part of ISO 16143 specifies the technical delivery conditions for hot- or cold-rolled sheet/plate and

strip for general purposes made of the most important corrosion-resistant stainless steel grades.

NOTE 1 In the text, under the term “general purposes”, purposes other than the special purposes mentioned in

References [1] to [4] are understood.

NOTE 2 Heat-resistant steel grades can be found in ISO 4955 and they can be used for corrosion-resistant

purposes.

In addition to this part of ISO 16143, the general technical delivery requirements of ISO 404 are applicable.

This part of ISO 16143 does not apply to components manufactured by further processing of the product

forms listed in the first paragraph where quality characteristics are altered as a result of such processing.

2 Normative references

The following documents, in whole or in part, are normatively referenced in this document and are

indispensable for its application. For dated references, only the edition cited applies. For undated

references, the latest edition of the referenced document (including any amendments) applies.

ISO 148-1, Metallic materials — Charpy pendulum impact test — Part 1: Test method

ISO 377, Steel and steel products — Location and preparation of samples and test pieces for mechanical

testing
ISO 404, Steel and steel products — General technical delivery requirements

ISO 3651-2, Determination of resistance to intergranular corrosion of stainless steels — Part 2: Ferritic,

austenitic and ferritic-austenitic (duplex) stainless steels — Corrosion test in media containing sulfuric acid

ISO 6506-1, Metallic materials — Brinell hardness test — Part 1: Test method
ISO 6507-1, Metallic materials — Vickers hardness test — Part 1: Test method

ISO 6508-1, Metallic materials — Rockwell hardness test — Part 1: Test method (scales A, B, C, D, E, F, G, H,

K, N, T)

ISO 6892-1:2009, Metallic materials — Tensile testing — Part 1: Method of test at room temperature

ISO 6892-2, Metallic materials — Tensile testing — Part 2: Method of test at elevated temperature

ISO 6929, Steel products — Vocabulary
ISO 10474, Steel and steel products — Inspection documents

ISO 14284, Steel and iron — Sampling and preparation of samples for the determination of chemical

composition
ISO 15510:2014, Stainless steels — Chemical composition
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ISO 16143-1:2014(E)
ISO/TS 4949, Steel names based on letter symbols
ISO/TR 9769, Steel and iron — Review of available methods of analysis
3 Terms and definitions

For the purposes of this document, the terms and definitions given in ISO 6929 and the following apply.

3.1
corrosion-resistant stainless steel

steel, with at least 10,5 % (mass fraction) Cr and a maximum of 1,2 % (mass fraction) C, for which

resistance to corrosion is of primary importance
3.2
product form
shape of a product
Note 1 to entry: Different forms of products are given in ISO 6929.
4 Designation

For the steel grades covered by this part of ISO 16143, the steel names as given in the tables are allocated

in accordance with ISO/TS 4949.

For the steel grades covered by this part of ISO 16143, the steel numbers as given in the tables are

allocated in accordance with ISO 15510.
5 Information to be supplied by the purchaser

It shall be the responsibility of the purchaser to specify all requirements that are necessary for products

covered by this part of ISO 16143. Such requirements to be considered include, but are not limited to, the

following:
a) the desired quantity;
b) the product form (strip or sheet/plate);

c) the number of the appropriate dimensional standard, e.g. ISO 9444-1, ISO 9444-2, ISO 9445-1,

ISO 9445-2, and ISO 18286 (see Annex D), the nominal dimensions, plus any choice of requirements;

d) the type of material (steel);
e) the number of this part of ISO 16143 (i.e. ISO 16143-1);
f) the steel name or steel number;

g) if, for the relevant steel in Tables 4 to 8, more than one treatment condition is covered, the symbol

for the desired heat treatment or cold-worked condition;
h) the desired process route/surface finish (see Table 3);

i) if a verification of internal soundness is required for flat products with thickness ≥6 mm,

requirements can be agreed at the time of enquiry and order (see 7.7);

j) any further optional test agreed between the manufacturer and purchaser at the time of enquiry

and order [see 8.2.3 b)];

k) the type of inspection document and its designation in accordance with ISO 10474 (see 8.2.1).

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ISO 16143-1:2014(E)

EXAMPLE 5 t of cold-rolled narrow strip in accordance with ISO 9445-1 with a specified thickness of 0,25 mm,

precision thickness tolerance (P), with a specified width of 250 mm, precision tolerance on width (P) and with

restricted tolerances on edge camber (R) made of a steel grade with name X5CrNi18-10 and number 4301-304-

00-I as specified in ISO 16143-1, in process route 2D and inspection certificate 3.1 as specified in ISO 10474, is

designated as follows:
5 t cold-rolled narrow strip ISO 9445-1 - 0,25P × 250P - R
Steel ISO 16143-1 - X5CrNi18-10 + 2D
ISO 10474 – 3.1
5 t cold-rolled narrow strip ISO 9445-1 - 0,25P × 250P - R
Steel ISO 16143-1 - 4301-304-00-I + 2D
ISO 10474 – 3.1
6 Classification of grades

Corrosion-resistant stainless steels covered in this part of ISO 16143 are classified according to their

structure into
— austenitic steels,
— austenitic-ferritic steels,
— ferritic steels,
— martensitic steels, or
— precipitation-hardening steels.
7 Requirements
7.1 Manufacturing process

Unless a special steelmaking process is agreed upon at the time of ordering, the steelmaking process

shall be at the discretion of the manufacturer. When he so requests, the purchaser shall be informed

what steelmaking process is being used.
7.2 Delivery condition

The products shall be supplied in the delivery condition agreed upon in the order, by reference to the

process route given in Table 3 and, where different alternatives exist, to the treatment conditions given

in Tables 4 to 8, 14, and 16 (see also Annex A).
7.3 Chemical composition

7.3.1 The chemical composition requirements given in Table 1 apply with respect to the chemical

composition of the cast analysis.

7.3.2 The product analysis can deviate from the limiting values for the cast analysis given in Table 1 by

the values listed in Table 2.
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ISO 16143-1:2014(E)
7.4 Susceptibility to intergranular corrosion

Referring to resistance to intergranular corrosion as defined in ISO 3651-2, for ferritic, austenitic, and

austenitic-ferritic steels, the specifications in Tables 4, 5, and 6 apply.

The susceptibility of stainless steels to intergranular corrosion is dependent on the type of environment

and therefore cannot always be clearly ascertained through standard laboratory tests. The selection of

the test or tests to be agreed upon should be based on experience with the use of the selected grade of

steel in the intended environment.
7.5 Mechanical properties

The mechanical properties at room temperature as specified in Tables 4 to 8 apply for the relevant

specified heat-treatment condition. This does not apply to the process route 1U (hot rolled, not heat

treated, not descaled). If, by agreement at the time of ordering, the products are to be supplied in a non-

heat-treated condition, the mechanical properties specified in Tables 4 to 8 shall be obtainable from

reference test pieces which have received the appropriate heat treatment (simulated heat treatment).

The values in Tables 9 to 13 apply for the 0,2 %- and 1 %-proof strength at elevated temperatures.

For cold-worked products, the 0,2 %-proof strength levels at ambient temperature as specified in

Table 14 apply. The available 0,2 %-proof strength levels in the cold-worked condition are indicated in

Table 15.

Alternatively, cold-worked products can be ordered according to their tensile strength levels as given in

Tables 16 and 17.

NOTE Austenitic steels are insensitive to brittle fracture in the solution-annealed condition. Because they

do not have a pronounced transition temperature, which is characteristic of other steels, they are also useful for

application at cryogenic temperatures.
7.6 Surface quality

The general surface appearance with respect to soundness and surface finish shall be consistent with

good production practice, for the grade and quality ordered, as determined by visual inspection. When

products are delivered in coil form, the degree and extent of imperfections can be expected to be greater,

due to the impracticability of removing short lengths of coil.

Products delivered with hot-rolled or cold-rolled finishes (see Table 3) shall, unless otherwise agreed, be

supplied with only one surface inspected to the required finish (the prime surface). In such instances,

the manufacturer should indicate the prime surface, by marking the material or the packaging, or by

some other agreed method. The default method is to mark the prime surface, and to make this surface

the top surface of plates, sheets, and cut lengths, or the outside surface of coiled products.

Where necessary, precise requirements on surface quality can be agreed upon at the time of enquiry

and order.
7.7 Internal soundness

For internal soundness, where appropriate, requirements together with the conditions for their

verification can be agreed upon at the time of enquiry and order.
7.8 Dimensions, tolerances on dimensions, and shape

The dimensions and the tolerances on dimensions and shape are to be agreed upon at the time of enquiry

and order, as far as possible with reference to the dimensional standards ISO 9444-1, ISO 9444-2,

ISO 9445-1, ISO 9445-2, and ISO 18286 (see Annex D).
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ISO 16143-1:2014(E)
7.9 Calculation of mass and tolerance of mass

7.9.1 The density values of the relevant grades for calculating the nominal mass of the products shall be

taken from Annex D of ISO 15510:2014.

7.9.2 If the tolerances on mass are not specified in the dimensional standards mentioned in 7.8, they

can be agreed upon at the time of enquiry and order.
8 Inspection, testing, and conformance of products
8.1 General

The manufacturer shall carry out appropriate process control, inspection, and testing to ensure that the

delivery complies with the requirements of the order.
This includes the following:
— a suitable frequency of verification of the dimensions of the products;

— an adequate intensity of visual examination of the surface quality of the products;

— an appropriate frequency and type of test to ensure that the correct grade of steel is delivered.

The nature and frequency of these verifications, examinations, and tests are determined by the

manufacturer, based on the degree of consistency that has been determined by the evidence of his

quality system. In view of this, verifications by specific tests for these requirements are not necessary,

unless otherwise agreed.
8.2 Inspection and testing procedures and types of inspection document

8.2.1 Products complying with this part of ISO 16143 shall be ordered and delivered with one of the

inspection documents as specified in ISO 10474. The type of document shall be agreed upon at the time

of enquiry and order. If the order does not contain any specification of this type, a test report 2.2 shall be

issued.

8.2.2 If, in accordance with the agreements made at the time of enquiry and order, a test report 2.2 is to

be provided, this shall cover

a) the statement that the material complies with the requirements of the order and

b) the results of the cast analysis for all elements specified for the type of steel supplied.

8.2.3 If, in accordance with the agreements in the order, an inspection document 3.1 or 3.2 of ISO 10474

is to be provided, the specific inspections and tests described in 8.3 shall be carried out and their results

shall be certified in the document.
In addition to 8.2.2 a) and b), the document shall cover

a) the results of the mandatory tests marked in the second column of Table 18 by an “m” and

b) the results of any optional test or inspection agreed when ordering, marked in the second column

of Table 18 by an “o”.
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ISO 16143-1:2014(E)
8.3 Specific inspection and testing
8.3.1 Extent of testing

The tests to be carried out, either mandatorily (m) or by agreement (o), the composition and size of the

test units, and the number of sample products, samples, and test pieces to be taken are given in Table 18.

8.3.2 Selection and preparation of samples and test pieces

8.3.2.1 The general conditions for selection and preparation of samples and test pieces shall be in

accordance with ISO 377 and ISO 14284.

8.3.2.2 The test samples for the tensile test shall be taken in accordance with Table 19 in such a way

that they are located halfway between the centre and a longitudinal edge.

The samples shall be taken from products in the delivery condition. If agreed, the samples can be taken

before flattening. For samples to be given a simulated heat treatment, the conditions for annealing shall

be agreed.

8.3.2.3 Samples for the hardness test and for the resistance to intergranular corrosion test, where

requested, shall be taken from the same locations as those for the mechanical tests. For the direction of

bending the test piece in the resistance to intergranular corrosion test, see Figure 1.

8.4 Test methods

8.4.1 Unless otherwise agreed upon when ordering, the choice of a suitable physical or chemical

method of analysis to determine the product analysis is at the discretion of the manufacturer. In cases of

dispute, the analysis shall be carried out by a laboratory approved by the two parties. In these cases, the

reference method of analysis shall be agreed upon, where possible, with reference to ISO/TR 9769.

8.4.2 The tensile test shall be carried out in accordance with ISO 6892-1:2009, taking into account the

additional or deviating conditions specified in footnote of Table 1. It shall be performed under controlled

conditions in accordance with Clause 5 of ISO 6892-1:2009.

Unless otherwise agreed upon, the tensile strength and elongation after fracture shall be determined

and, additionally, for ferritic and austenitic-ferritic steels, the 0,2 %-proof strength, and for austenitic

steels, the 0,2 %- and 1 %-proof strengths shall be determined.

If a tensile test at elevated temperature has been ordered, this shall be carried out in accordance with

ISO 6892-2. If the proof strength is to be verified, the 0,2 %-proof strength shall be determined, for

ferritic, martensitic, precipitation-hardening, and austenitic-ferritic steels. In the case of austenitic

steels, the 0,2 %- and the 1 %-proof strength shall be determined.

8.4.3 If an impact test has been ordered, it shall be carried out in accordance with ISO 148-1 on test

pieces with a V-notch and a 2 mm hammer. The average obtained from three test pieces is considered to

be the test result (specified in ISO 404).

8.4.4 The Brinell hardness test shall be carried out in accordance with ISO 6506-1. The Vickers hardness

test shall be carried out in accordance with ISO 6507-1. The Rockwell hardness test shall be carried out

in accordance with ISO 6508-1.

8.4.5 The resistance to intergranular corrosion shall be tested in accordance with ISO 3651-2, unless

otherwise agreed upon.
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ISO 16143-1:2014(E)

8.4.6 Dimensions and dimensional tolerances of the products shall be verified in accordance with the

requirements of the relevant dimensional standards (see 7.8).
8.5 Retests
Use ISO 404.
9 Marking

9.1 The products shall be marked with the manufacturer’s trademark or symbol and the steel name or

number. The product shall also be marked with the cast number, thickness, or dimension, as well as an

identification number related to an appropriate inspection certificate.

9.2 Unless otherwise agreed, the method of marking and the material of marking shall be at the option

of the manufacturer. Its quality shall be such that it shall be durable for at least one year, can withstand

normal handling, and can be stored in unheated storage under cover. The corrosion resistance of the

product shall not be impaired by the marking.

9.3 Each unit shall be marked. As an alternative, for items that are wrapped, bundled, or boxed, or

where the surface is ground or polished, the marking can be applied to the packaging, or to a tag securely

attached to it.
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ISO 16143-1:2014(E)
8 © ISO 2014 – All rights reserved
Table 1 — Chemical composition (cast analysis)
Steel designation % (mass fraction)
Name ISO number C Si Mn P S Cr Mo Ni N Others
Austenitic steels

X5CrNi17-7 4319-301-00-I 0,07 1,00 2,00 0,045 0,030 16,0 to 18,0 — 6,0 to 8,0 0,10 —

X12CrNi17-7 4310-301-09-X 0,15 1,00 2,00 0,045 0,030 16,0 to 18,0 — 6,0 to 8,0 — —

X2CrNiN18-7 4318-301-53-I 0,030 1,00 2,00 0,045 0,015 16,0 to 18,5 — 6,0 to 8,0 0,10 to 0,20 —

Cu: 1,00 to

X6CrNiCu17-8-2 4567-304-76-I 0,08 1,70 3,00 0,045 0,030 15,0 to 18,0 — 6,0 to 9,0 —

3,00

X10CrNi18-8 4310-301-00-I 0,05 to 0,15 2,00 2,00 0,045 0,030 16,0 to 19,0 0,80 6,0 to 9,5 0,10 —

X2CrNi18-9 4307-304-03-I 0,030 1,00 2,00 0,045 0,030 17,5 to 19,5 — 8,0 to 10,0 0,10 —

X12CrNiSi18-9-3 4326-302-15-I 0,15 2,00 to 3,00 2,00 0,045 0,030 17,0 to 19,0 — 8,0 to 10,0 — —

X2CrNiN18-9 4311-304-53-I 0,030 1,00 2,00 0,045 0,030 17,5 to 19,5 — 8,0 to 10,0 0,12 to 0,22 —

X5CrNi18-10 4301-304-00-I 0,07 1,00 2,00 0,045 0,030 17,5 to 19,5 — 8,0 to 10,5 0,10 —

Ti: 5 × C to

X6CrNiTi18-10 4541-321-00-I 0,08 1,00 2,00 0,045 0,030 17,0 to 19,0 — 9,0 to 12,0 —

0,70
Nb: 10 × C to

X6CrNiNb18-10 4550-347-00-I 0,08 1,00 2,00 0,045 0,030 17,0 to 19,0 — 9,0 to 12,0 —

1,00

X2CrNi19-11 4306-304-03-I 0,030 1,00 2,00 0,045 0,030 18,0 to 20,0 — 10,0 to 12,0 0,10 —

X6CrNi18-12 4303-305-00-I 0,08 1,00 2,00 0,045 0,030 17,0 to 19,0 — 10,5 to 13,0 0,10 —

Cu: 2,00 to

X8CrMnCuN17-8-3 4597-204-76-I 0,10 2,00 6,5 to 9,0 0,040 0,030 15,0 to 18,0 1,00 3,00 0,10 to 0,30

3,5

X12CrMnNiN17-7-5 4372-201-00-I 0,15 1,00 5,5 to 7,5 0,045 0,030 16,0 to 18,0 — 3,5 to 5,5 0,05 to 0,25 —

X2CrMnNiN17-7-5 4371-201-53-I 0,030 1,00 6,0 to 8,0 0,045 0,015 16,0 to 17,5 — 3,5 to 5,5 0,15 to 0,25 Cu: 1,00

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ISO 16143-1:2014(E)
© ISO 2014 – All rights reserved 9
Table 1 — (continued)
Steel designation % (mass fraction)
Name ISO number C Si Mn P S Cr Mo Ni N Others
Cu: 1,00 to

X9CrMnNiCu17-8-5-2 4618-201-76-E 0,10 1,00 5,5 to 9,5 0,070 0,010 16,5 to 18,5 — 4,5 to 5,5 0,15

2,50

X11CrNiMnN19-8-6 4369-202-91-I 0,07 to 0,15 0,50 to 1,00 5,0 to 7,5 0,030 0,015 17,5 to 19,5 — 6,5 to 8,5 0,20 to 0,30 —

X1CrNi25-21 4335-310-02-I 0,020 0,25 2,00 0,025 0,010 24,0 to 26,0 0,20 20,0 to 22,0 0,10 —

Austenitic steels with Mo

X2CrNiMo17-12-2 4404-316-03-I 0,030 1,00 2,00 0,045 0,030 16,5 to 18,5 2,00 to 3,00 10,0 to 13,0 0,10 —

X5CrNiMo17-12-2 4401-316-00-I 0,08 1,00 2,00 0,045 0,030 16,0 to 18,0 2,00 to 3,00 10,0 to 13,0 0,10 —

Ti: 5 × C to

X6CrNiMoTi17-12-2 4571-316-35-I 0,08 1,00 2,00 0,045 0,030 16,5 to 18,5 2,00 to 2,50 10,5 to 13,5 —

0,70

X2CrNiMo17-12-3 4432-316-03-I 0,030 1,00 2,00 0,045 0,030 16,5 to 18,5 2,50 to 3,00 10,5 to 13,0 0,10 —

X3CrNiMo17-12-3 4436-316-00-I 0,05 1,00 2,00 0,045 0,030 16,5 to 18,5 2,50 to 3,00 10,5

...

DRAFT INTERNATIONAL STANDARD ISO/DIS 16143-1
ISO/TC 17/SC 4 Secretariat: DIN
Voting begins on Voting terminates on
2012-12-03 2013-03-03

INTERNATIONAL ORGANIZATION FOR STANDARDIZATION • МЕЖДУНАРОДНАЯ ОРГАНИЗАЦИЯ ПО СТАНДАРТИЗАЦИИ • ORGANISATION INTERNATIONALE DE NORMALISATION

Stainless steels for general purposes —
Part 1:
Flat products
Aciers inoxydables pour usage général —
Partie 1: Produits plats
[Revision of first edition (ISO 16143-1:2004)
ICS 77.140.20

To expedite distribution, this document is circulated as received from the committee

secretariat. ISO Central Secretariat work of editing and text composition will be undertaken at

publication stage.

Pour accélérer la distribution, le présent document est distribué tel qu'il est parvenu du

secrétariat du comité. Le travail de rédaction et de composition de texte sera effectué au

Secrétariat central de l'ISO au stade de publication.

THIS DOCUMENT IS A DRAFT CIRCULATED FOR COMMENT AND APPROVAL. IT IS THEREFORE SUBJECT TO CHANGE AND MAY NOT BE

REFERRED TO AS AN INTERNATIONAL STANDARD UNTIL PUBLISHED AS SUCH.

IN ADDITION TO THEIR EVALUATION AS BEING ACCEPTABLE FOR INDUSTRIAL, TECHNOLOGICAL, COMMERCIAL AND USER PURPOSES, DRAFT

INTERNATIONAL STANDARDS MAY ON OCCASION HAVE TO BE CONSIDERED IN THE LIGHT OF THEIR POTENTIAL TO BECOME STANDARDS TO

WHICH REFERENCE MAY BE MADE IN NATIONAL REGULATIONS.

RECIPIENTS OF THIS DRAFT ARE INVITED TO SUBMIT, WITH THEIR COMMENTS, NOTIFICATION OF ANY RELEVANT PATENT RIGHTS OF WHICH

THEY ARE AWARE AND TO PROVIDE SUPPORTING DOCUMENTATION.
© International Organization for Standardization, 2012
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ISO/DIS 16143-1
Copyright notice

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ii © ISO 2012 – All rights reserved
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ISO/DIS 16143-1
Contents Page

Foreword ............................................................................................................................................................iv

1 Scope......................................................................................................................................................1

2 Normative references............................................................................................................................1

3 Terms and definitions ...........................................................................................................................2

4 Designation ............................................................................................................................................2

5 Information to be supplied by the purchaser .....................................................................................2

6 Classification of grades........................................................................................................................3

7 Requirements.........................................................................................................................................3

7.1 Manufacturing process.........................................................................................................................3

7.2 Delivery condition .................................................................................................................................3

7.3 Chemical composition ..........................................................................................................................3

7.4 Susceptibility to intergranular corrosion............................................................................................4

7.5 Mechanical properties...........................................................................................................................4

7.6 Surface quality.......................................................................................................................................4

7.7 Internal soundness................................................................................................................................4

7.8 Dimensions, tolerances on dimensions and shape...........................................................................4

7.9 Calculation of mass and tolerance of mass .......................................................................................5

8 Inspection, testing and conformance of products.............................................................................5

8.1 General ...................................................................................................................................................5

8.2 Inspection and testing procedures and types of inspection document..........................................5

8.3 Specific inspection and testing ...........................................................................................................5

8.3.1 Extent of testing ....................................................................................................................................5

8.3.2 Selection and preparation of samples and test pieces .....................................................................6

8.4 Test methods .........................................................................................................................................6

8.5 Retests....................................................................................................................................................6

9 Marking...................................................................................................................................................7

Annex A (normative) Guidelines for further treatment (including heat treatment) in fabrication............30

Annex B (informative) Designations of the steels given in Table 1 and of comparable grades

covered in ASTM-, EN-, JIS- and GB-Standards ..............................................................................34

Annex C (informative) Comparison list of abbreviations for process route/surface finish of flat

products given in Table 3 covered in ASTM- and JIS-Standards...................................................37

Annex D (informative) Applicable dimensional standards ...........................................................................38

Bibliography......................................................................................................................................................39

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ISO/DIS 16143-1
Foreword

ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies

(ISO member bodies). The work of preparing International Standards is normally carried out through ISO

technical committees. Each member body interested in a subject for which a technical committee has been

established has the right to be represented on that committee. International organizations, governmental and

non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the

International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.

International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.

The main task of technical committees is to prepare International Standards. Draft International Standards

adopted by the technical committees are circulated to the member bodies for voting. Publication as an

International Standard requires approval by at least 75 % of the member bodies casting a vote.

Attention is drawn to the possibility that some of the elements of this document may be the subject of patent

rights. ISO shall not be held responsible for identifying any or all such patent rights.

ISO 16143-1 was prepared by Technical Committee ISO/TC 17, Steels, Subcommittee SC 4, Heat treatable

and alloy steels.

This second edition cancels and replaces the first edition (ISO 16143-1:2004) which has been technically

revised.

ISO 16143 consists of the following parts, under the general title Stainless steels for general purposes:

 Part 1: Corrosion resistant flat products
 Part 2: Corrosion resistant semi-finished products, bars and sections
 Part 3: Wire
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DRAFT INTERNATIONAL STANDARD ISO/DIS 16143-1
Stainless steels for general purposes — Part 1: Corrosion
resistant flat products
1 Scope

This part of ISO 16143 specifies the technical delivery conditions for hot- or cold-rolled sheet/plate and strip

for general purposes made of the most important corrosion-resistant stainless steel grades.

NOTE In the text, under the term “general purposes”, purposes other than the special purposes mentioned in the

bibliographic references [1] — [4] are understood.

In addition to this part of ISO 16143, the general technical delivery requirements of ISO 404 are applicable.

This part of ISO 16143 does not apply to components manufactured by further processing of the product

forms listed in paragraph 1 where quality characteristics are altered as a result of such processing.

2 Normative references

The following referenced documents are indispensable for the application of this document. For dated

references, only the edition cited applies. For undated references, the latest edition of the referenced

document (including any amendments) applies.

ISO 148-1, Metallic materials – Charpy pendulum impact test – Part 1: Test method

ISO 377, Steel and steel products — Location and preparation of samples and test pieces for mechanical

testing
ISO 404, Steel and steel products — General technical delivery requirements

ISO 3651-2, Determination of resistance to intergranular corrosion of stainless steels — Part 2: Ferritic,

austenitic and ferritic-austenitic (duplex) stainless steels — Corrosion test in media containing sulfuric acid

ISO/TS 4949, Steel names based on letter symbols
ISO 6506-1, Metallic materials - Brinell hardness test - Part 1: Test method
ISO 6507-1, Metallic materials - Vickers hardness test - Part 1: Test method

ISO 6508-1, Metallic materials - Rockwell hardness test - Part 1: Test method (scales A, B, C, D, E, F, G, H,

K, N, T)

ISO 6892-1, Metallic materials - Tensile testing - Part 1: Method of test at room temperature

ISO 6892-2, Metallic materials - Tensile testing - Part 2: Method of test at elevated temperature

ISO 6929, Steel products — Definitions and classification
ISO/TR 9769, Steel and iron — Review of available methods of analysis
ISO 10474, Steel and steel products — Inspection documents
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ISO/DIS 16143-1

ISO 14284, Steel and iron — Sampling and preparation of samples for the determination of chemical

composition
ISO 15510, Stainless steels — Chemical composition
3 Terms and definitions

For the purposes of this document, the terms and definitions given in ISO 6929 and the following apply.

3.1
corrosion-resistant stainless steels

steels, with at least 10,5 % (mass fraction) Cr and a maximum of 1,2 % (mass fraction) C, for which resistance

to corrosion is of primary importance
3.2
product forms
see ISO 6929
4 Designation

For the steel grades covered by this International Standard, the steel names as given in the tables are

allocated in accordance with ISO/TS 4949.

For the steel grades covered by this International Standard, the steel numbers as given in the tables are

allocated in accordance with ISO 15510.
5 Information to be supplied by the purchaser

It shall be the responsibility of the purchaser to specify all requirements that are necessary for products

covered by this specification. Such requirements to be considered include, but are not limited to, the following:

a) the desired quantity;
b) the product form (strip or sheet/plate);

c) the number of the appropriate dimensional standard (see Annex D), the nominal dimensions, plus any

choice of requirements;
d) the type of material (steel);
e) the number of this International Standard, i.e. ISO 16143-1;
f) the steel name or steel number;

g) if, for the relevant steel in Tables 4 to 8, more than one treatment condition is covered, the symbol for the

desired heat treatment or cold worked condition;
h) the desired process route (see Table 3);

i) if a verification of internal soundness is required, for flat products with thickness ≥ 6 mm requirements may

be agreed at the time of enquiry and order (see 7.7);

j) any further optional test agreed between manufacturer and purchaser at the time of enquiry and order

(see 8.2.3 b);

k) the type of inspection document and its designation in accordance with ISO 10474 (see 8.2.1).

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ISO/DIS 16143-1

EXAMPLE 5 t of cold-rolled narrow strip in accordance with ISO 9445-1 with a specified thickness of 0,25 mm,

precision thickness tolerance (P), with a specified width of 250 mm, precision tolerance on width (P) and with restricted

tolerances on edge camber (R) made of a steel grade with name X5CrNi18-10 and number 4301-304-00-I as specified in

ISO 16143-1, in process route 2D and inspection certificate 3.1 as specified in ISO 10474 is designated as follows:

5 t cold-rolled narrow strip ISO 9445-1 — 0,25P  250P — R
Steel ISO 16143-1 - X5CrNi18-10  2D
ISO 10474 – 3.1
5 t cold-rolled narrow strip ISO 9445-1 — 0,25P  250P — R
Steel ISO 16143-1 - 4301-304-00-I  2D
ISO 10474 – 3.1
6 Classification of grades

Corrosion-resistant stainless steels covered in this part of ISO 16143 are classified according to their structure

into:
 austenitic steels;
 austenitic-ferritic steels;
 ferritic steels;
 martensitic steels;
 precipitation-hardening steels.
7 Requirements
7.1 Manufacturing process

Unless a special steelmaking process is agreed upon at the time of ordering, the steelmaking process shall be

at the discretion of the manufacturer. When he so requests, the purchaser shall be informed what steelmaking

process is being used.
7.2 Delivery condition

The products shall be supplied in the delivery condition agreed upon in the order, by reference to the process

route given in Table 3 and, where different alternatives exist, to the treatment conditions given in Tables 4

to 8, 14 and 16 (also see Annex A).
7.3 Chemical composition

7.3.1 The chemical composition requirements given in Table 1 apply with respect to the chemical

composition of the cast analysis.

7.3.2 The product analysis may deviate from the limiting values for the cast analysis given in Table 1 by the

values listed in Table 2.

NOTE It is under discussion to change the deviations to the values according to ASTM.

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ISO/DIS 16143-1
7.4 Susceptibility to intergranular corrosion

Referring to resistance to intergranular corrosion as defined in ISO 3651-2, for ferritic, austenitic and

austenitic-ferritic steels the specification in Tables 4, 5 and 6 apply.

NOTE The susceptibility of stainless steels to intergranular corrosion is dependent on the type of environment and

therefore cannot always be clearly ascertained through standard laboratory tests. The selection of the test or tests to be

agreed upon should be based on experience with the use of the selected grade of steel in the intended environment.

7.5 Mechanical properties

The mechanical properties at room temperature as specified in Tables 4 to 8 apply for the relevant specified

heat-treatment condition. This does not apply to the process route 1U (hot rolled, not heat-treated, not

descaled). If, by agreement at the time of ordering, the products are to be supplied in a non-heat-treated

condition, the mechanical properties specified in Tables 4 to 8 shall be obtainable from reference test pieces

which have received the appropriate heat treatment (simulated heat treatment).

The values in Tables 9 to 13 apply for the 0,2 %- and 1 %-proof strength at elevated temperatures.

For cold worked products, the 0,2 %-proof-strength levels at ambient temperature as specified in Table 14

apply. The available 0,2 %-proof strength levels in the cold worked condition are indicated in Table 15.

Alternatively, cold worked products can be ordered according to their tensile strength levels as given in Tables

16 and 17.

NOTE Austenitic steels are insensitive to brittle fracture in the solution-annealed condition. Because they do not have

a pronounced transition temperature, which is characteristic of other steels, they are also useful for application at

cryogenic temperatures.
7.6 Surface quality

The general surface appearance with respect to soundness and surface finish shall be consistent with good

production practice, for the grade and quality ordered, as determined by visual inspection. When products are

delivered in coil form, the degree and extent of imperfections may be expected to be greater, due to the

impracticability of removing short lengths of coil.

Products delivered with hot-rolled or cold-rolled finishes (see Table 3) shall, unless otherwise agreed, be

supplied with only one surface inspected to the required finish (the prime surface). In such instances, the

manufacturer should indicate the prime surface, by marking the material or the packaging, or by some other

agreed method. The default method is to mark the prime surface, and to make this surface the top surface of

plates, sheets and cut lengths, or the outside surface of coiled products.

Where necessary, precise requirements on surface quality may be agreed upon at the time of enquiry and

order.
7.7 Internal soundness

For the internal soundness, where appropriate, requirements together with the conditions for their verification

may be agreed upon at the time of enquiry and order.
7.8 Dimensions, tolerances on dimensions and shape

The dimensions and the tolerances on dimensions and shape are to be agreed upon at the time of enquiry

and order, as far as possible with reference to the dimensional standards ISO 9444-1, ISO 9444-2,

ISO 9445-1, ISO 9445-2 and ISO 18286 (see Annex D).
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ISO/DIS 16143-1
7.9 Calculation of mass and tolerance of mass

7.9.1 The density values of the relevant grades for calculating the nominal mass of the products shall be

taken from Annex B of ISO 15510.

7.9.2 If the tolerances on mass are not specified in the dimensional standards mentioned in 7.8, they may

be agreed upon at the time of enquiry and order.
8 Inspection, testing and conformance of products
8.1 General

The manufacturer shall carry out appropriate process control, inspection and testing to assure himself that the

delivery complies with the requirements of the order.
This includes the following:
 a suitable frequency of verification of the dimensions of the products;

 an adequate intensity of visual examination of the surface quality of the products;

 an appropriate frequency and type of test to ensure that the correct grade of steel is delivered.

The nature and frequency of these verifications, examinations and tests are determined by the manufacturer,

based on the degree of consistency that has been determined by the evidence of his quality system. In view of

this, verifications by specific tests for these requirements are not necessary, unless otherwise agreed.

8.2 Inspection and testing procedures and types of inspection document

8.2.1 Products complying with this International Standard shall be ordered and delivered with one of the

inspection documents as specified in ISO 10474. The type of document shall be agreed upon at the time of

enquiry and order. If the order does not contain any specification of this type, a test report 2.2 shall be issued.

8.2.2 If, in accordance with the agreements made at the time of enquiry and order, a test report 2.2 is to be

provided, this shall cover:
a) the statement that the material complies with the requirements of the order;

b) the results of the cast analysis for all elements specified for the type of steel supplied.

8.2.3 If, in accordance with the agreements in the order, an inspection document 3.1 or 3.2 of ISO 10474 is

to be provided, the specific inspections and tests described in 8.3 shall be carried out and their results shall be

certified in the document.
In addition to 8.2.2 a) and b) the document shall cover

a) the results of the mandatory tests marked in the second column of Table 18 by an “m”;

b) the results of any optional test or inspection agreed when ordering, marked in the second column of

Table 18 by an “o”.
8.3 Specific inspection and testing
8.3.1 Extent of testing

The tests to be carried out, either mandatorily (m) or by agreement (o), the composition and size of the test

units, and the number of sample products, samples and test pieces to be taken are given in Table 9.

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ISO/DIS 16143-1
8.3.2 Selection and preparation of samples and test pieces

8.3.2.1 The general conditions for selection and preparation of samples and test pieces shall be in

accordance with ISO 377 and ISO 14284.

8.3.2.2 The test samples for the tensile test shall be taken in accordance with Figure 1 in such a way that

they are located halfway between the centre and a longitudinal edge.

The samples shall be taken from products in the delivery condition. If agreed, the samples may be taken

before flattening. For samples to be given a simulated heat treatment, the conditions for annealing shall be

agreed.

8.3.2.3 Samples for the hardness test and for the resistance to intergranular corrosion test, where

requested, shall be taken from the same locations as those for the mechanical tests. For direction of bending

the test piece in the resistance to intergranular corrosion test, see Figure 2.
8.4 Test methods

8.4.1 Unless otherwise agreed upon when ordering, the choice of a suitable physical or chemical method of

analysis to determine the product analysis is at the discretion of the manufacturer. In cases of dispute, the

analysis shall be carried out by a laboratory approved by the two parties. In these cases, the reference

method of analysis shall be agreed upon, where possible, with reference to ISO/TR 9769.

8.4.2 The tensile test shall be carried out in accordance with ISO 6892-1 taking into account the additional

or deviating conditions specified in footnote of Figure 1. It shall be performed under controlled conditions in

accordance with clause 5 of ISO 6892-1.

Unless otherwise agreed upon, the tensile strength and elongation after fracture shall be determined and,

additionally, for ferritic and austenitic-ferritic steels, the 0,2 % proof strength, and for austenitic steels, the

0,2 % and 1 % proof strengths shall be determined.

If a tensile test at elevated temperature has been ordered, this shall be carried out in accordance with ISO

6892-2. If the proof strength is to be verified, the 0,2 %-proof strength shall be determined, for ferritic,

martensitic, precipitation hardening and austenitic-ferritic steels. In the case of austenitic steels, the 0,2 %-

and the 1 %-proof strength shall be determined.

8.4.3 If an impact test has been ordered, it shall be carried out in accordance with ISO 148-1 on test pieces

with a V-notch and a 2 mm hammer. The average obtained from three test pieces is considered to be the test

result (see also ISO 404).

8.4.4 The Brinell hardness test shall be carried out in accordance with ISO 6506-1. The Vickers hardness

test shall be carried out in accordance with ISO 6507-1. The Rockwell hardness test shall be carried out in

accordance with ISO 6508-1.

8.4.5 The resistance to intergranular corrosion shall be tested in accordance with ISO 3651-2, unless

otherwise agreed upon.

8.4.6 Dimensions and dimensional tolerances of the products shall be verified in accordance with the

requirements of the relevant dimensional standards (see 7.8).
8.5 Retests
See ISO 404.
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ISO/DIS 16143-1
9 Marking

9.1 The products shall be marked with the manufacturer's trademark or symbol and the steel name or

number. The product shall also be marked with cast number, thickness or dimension as well as an

identification number related to an appropriate inspection certificate.

9.2 Unless otherwise agreed the method of marking and the material of marking shall be at the option of the

manufacturer. Its quality shall be such that it shall be durable for at least one year, can withstand normal

handling and can be stored in unheated storage under cover. Corrosion resistance of the product shall not be

impaired by the marking.

9.3 Each unit shall be marked. As an alternative, for items that are wrapped, bundled or boxed, or where

the surface is ground or polished, the marking may be applied to the packaging, or to a tag securely attached

to it.
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DRAFT INTERNATIONAL STANDARD ISO/DIS 16143-1
Table 1 — Chemical composition (cast analysis)
Steel designation % (mass fraction)
Name ISO-number C Si Mn P S Cr Mo Ni N Others
Austenitic steels
X5CrNi17-7 4319-301-00-I 0,07 1,00 2,00 0,045 16,0 to 18,0 — 6,0 to 8,0 0,10 —
0,030

X12CrNi17-7 43XX-301-09-X 0,15 1,00 2,00 0,045 0,030 16,0 to 18,0 — 6,0 to 8,0 — —

0,10 to

X2CrNiN18-7 4318-301-53-I 0,030 1,00 2,00 0,045 0,015 16,0 to 18,5 — 6,0 to 8,0 —

0,20

X6CrNiCu17-8-2 4567-304-76-I 0,08 1,70 3,00 0,045 0,030 15,0 to 18,0 — 6,0 to 9,0 — Cu: 1,00 to 3,00

X10CrNi18-8 4310-301-00-I 0,05 to 0,15 2,00 2,00 0,045 16,0 to 19,0 0,80 6,0 to 9,5 0,10 —

0,030
X2CrNi18-9 4307-304-03-I 0,030 1,00 2,00 0,045 17,5 to 19,5 — 8,0 to 10,0 0,10 —
0,030
2,00 to

X12CrNiSi18-9-3 4326-302-15-I 0,15 2,00 0,045 0,030 17,0 to 19,0 — 8,0 to 10,0 — —

3,00
0,12 to
X2CrNiN18-9 4311-304-53-I 0,030 1,00 2,00 0,045 17,5 to 19,5 — 8,0 to 10,0 —
0,030
0,22

X5CrNi18-10 4301-304-00-I 0,07 1,00 2,00 0,045 0,030 17,5 to 19,5 — 8,0 to 10,5 0,10 —

X6CrNiTi18-10 4541-321-00-I 0,08 1,00 2,00 0,045 17,0 to 19,0 — 9,0 to 12,0 — Ti: 5xC to 0,70

0,030
Nb: 10xC to
X6CrNiNb18-10 4550-347-00-I 0,08 1,00 2,00 0,045 17,0 to 19,0 — 9,0 to 12,0 —
0,030
1,00

X2CrNi19-11 4306-304-03-I 0,030 1,00 2,00 0,045 0,030 18,0 to 20,0 — 10,0 to 12,0 0,10 —

X6CrNi18-12 4303-305-00-I 0,08 1,00 2,00 0,045 17,0 to 19,0 — 10,5 to 13,0 0,10 —

0,030
0,10 to

X8CrMnCuN17-8-3 4597-204-76-I 0,10 2,00 6,5 to 9,0 0,040 0,030 15,0 to 18,0 1,00 3,00 Cu: 2,00 to 3,5

0,30
0,05 to

X12CrMnNiN17-7-5 4372-201-00-I 0,15 1,00 5,5 to 7,5 0,045 16,0 to 18,0 3,5 to 5,5 — —

0,030
0,25
0,15 to

X2CrMnNiN17-7-5 4371-201-53-I 0,030 1,00 6,0 to 8,0 0,045 0,015 16,0 to 17,5 — 3,5 to 5,5 Cu: 1,00

0,25
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ISO/DIS 16143-1
Table 1 (continued)
Steel designation % (mass fraction)
Name ISO-number C Si Mn P S Cr Mo Ni N Others
Cu: 1,00 to

X9CrMnNiCu17-8-5-2 4618-201-76-E 0,10 1,00 5,5 to 9,5 0,070 0,010 16,5 to 18,5 — 4,5 to 5,5 0,15

2,50
0,07 to 0,50 to 0,20 to

X11CrNiMnN19-8-6 4369-202-91-I 5,0 to 7,5 0,030 0,015 17,5 to 19,5 — 6,5 to 8,5 —

0,15 1,00 0,30

X1CrNi25-21 4335-310-02-I 0,02 0,25 2,00 0,025 0,010 24,0 to 26,0 0,20 20,0 to 22,0 0,10 —

Austenitic steels with Mo

X2CrNiMo17-12-2 4404-316-03-I 0,030 1,00 2,00 0,045 16,5 to 18,5 2,00 to 3,00 10,0 to 13,0 0,10 —

0,030

X5CrNiMo17-12-2 4401-316-00-I 0,07 1,00 2,00 0,045 16,5 to 18,5 2,00 to 3,00 10,0 to 13,0 0,10 —

0,030
Ti: 5xC to

X6CrNiMoTi17-12-2 4571-316-35-I 0,08 1,00 2,00 0,045 0,030 16,5 to 18,5 2,00 to 2,50 10,5 to 13,5 —

0,70

X2CrNiMo17-12-3 4432-316-03-I 0,030 1,00 2,00 0,045 16,5 to 18,5 2,50 to 3,00 10,5 to 13,0 0,10 —

0,030
16,5 to 18,5 2,50 to 3,00 10,5 to 13,0 0,10 —
X3CrNiMo17-12-3 4436-316-00-I 0,05 1,00 2,00 0,045 0,030
0,12 to

X2CrNiMoN17-12-3 4429-316-53-I 0,030 1,00 2,00 0,045 16,5 to 18,5 2,50 to 3,00 10,5 to 13,0 —

0,030
0,22

X2CrNiMo17-14-3 44xx-316-03-X 0,030 1,00 2,00 0,045 0,030 16,0 to 18,0 2,0 to 3,0 12,0 to 15,0 — —

X2CrNiMo18-14-3 4435-316-91-I 0,030 1,00 2,00 0,045 0,015 17,0 to 19,0 2,50 to 3,00 12,5 to 15,0 0,10 —

0,12 to
0,030 1,00 2,00 0,045 0,015 16,5 to 18,5 4,0 to 5,0 12,5 to 14,5 —
X2CrNiMoN17-13-5 4439-317-26-E
0,22

X2CrNiMo19-14-4 4438-317-03-I 0,030 1,00 2,00 0,045 17,5 to 20,0 3,0 to 4,0 12,0 to 15,0 0,10 —

0,030
0,18 to Cu: 0,50 to

X1CrNiMoCuN20-18-7 4547-312-54-I 0,020 0,70 1,00 0,035 0,015 19,5 to 20,5 6,0 to 7,0 17,5 to 18,5

0,25 1,00
0,10 to
...