SIST EN 10088-2:2005
(Main)Stainless steels - Part 2: Technical delivery conditions for sheet/plate and strip of corrosion resisting steels for general purposes
Stainless steels - Part 2: Technical delivery conditions for sheet/plate and strip of corrosion resisting steels for general purposes
1.1 This part of EN 10088 specifies the technical delivery conditions for hot or cold rolled sheet/plate and strip of standard grades and special grades of corrosion resisting stainless steels for general purposes.
NOTE General purposes include the use of stainless steels in contact with foodstuffs.
1.2 The general technical delivery conditions specified in EN 10021 apply in addition to the specifications of this European Standard, unless otherwise specified in this European Standard.
1.3 This European Standard does not apply to components manufactured by further processing of the product forms listed in 1.1 with quality characteristics altered as a result of such further processing.
Nichtrostende Stähle - Teil 2: Technische Lieferbedingungen für Blech und Band aus korrosionsbeständigen Stählen für allgemeine Verwendung
Aciers inoxydables - Partie 2: Conditions techniques de livraison des tôles et bandes en acier de résistance a la corrosion pour usage général
Nerjavna jekla - 2. del: Tehnični dobavni pogoji za korozijsko odporne pločevine in trakove za splošno uporabo
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN 10088-2:2005
01-september-2005
1DGRPHãþD
SIST EN 10088-2:1997
1HUMDYQDMHNODGHO 7HKQLþQLGREDYQLSRJRML]DNRUR]LMVNRRGSRUQHSORþHYLQHLQ
WUDNRYH]DVSORãQRXSRUDER
Stainless steels - Part 2: Technical delivery conditions for sheet/plate and strip of
corrosion resisting steels for general purposes
Nichtrostende Stähle - Teil 2: Technische Lieferbedingungen für Blech und Band aus
korrosionsbeständigen Stählen für allgemeine Verwendung
Aciers inoxydables - Partie 2: Conditions techniques de livraison des tôles et bandes en
acier de résistance a la corrosion pour usage général
Ta slovenski standard je istoveten z: EN 10088-2:2005
ICS:
77.140.20 Visokokakovostna jekla Stainless steels
77.140.50 3ORãþDWLMHNOHQLL]GHONLLQ Flat steel products and semi-
SROL]GHONL products
SIST EN 10088-2:2005 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST EN 10088-2:2005
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SIST EN 10088-2:2005
EUROPEAN STANDARD EN 10088-2
NORME EUROPÉENNE
EUROPÄISCHE NORM
June 2005
ICS 77.140.20; 77.140.50 Supersedes EN 10088-2:1995
English version
Stainless steels - Part 2: Technical delivery conditions for
sheet/plate and strip of corrosion resisting steels for general
purposes
Aciers inoxydables - Partie 2: Conditions techniques de Nichtrostende Stähle - Teil 2: Technische
livraison des tôles et bandes en acier de résistance à la Lieferbedingungen für Blech und Band aus
corrosion pour usage général korrosionsbeständigen Stählen für allgemeine Verwendung
This European Standard was approved by CEN on 4 May 2005.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European
Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national
standards may be obtained on application to the Central Secretariat or to any CEN member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the official
versions.
CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,
Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia,
Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36 B-1050 Brussels
© 2005 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 10088-2:2005: E
worldwide for CEN national Members.
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SIST EN 10088-2:2005
EN 10088-2:2005 (E)
Contents
Page
Foreword .3
1 Scope .4
2 Normative references .4
3 Terms and definitions.5
4 Designation and ordering.5
4.1 Designation of steel grades .5
4.2 Designation to be used on ordering.5
5 Classification of grades.6
6 Requirements .7
6.1 Steelmaking process .7
6.2 Delivery condition.7
6.3 Chemical composition.7
6.4 Chemical corrosion properties .7
6.5 Mechanical properties .7
6.6 Surface quality .7
6.7 Internal soundness .8
6.8 Formability at room temperature .8
6.9 Dimensions and tolerances on dimensions and shape .8
6.10 Calculation of mass and tolerances on mass.8
7 Inspection and testing .8
7.1 General .8
7.2 Agreement on tests and inspection documents.8
7.3 Specific inspection and testing .9
7.4 Test methods.9
7.5 Retests.10
8 Marking .10
Annex A (informative) Guidelines for further treatment (including heat treatment) in fabrication .37
Annex B (informative) Applicable dimensional standards .42
Bibliography.43
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SIST EN 10088-2:2005
EN 10088-2:2005 (E)
Foreword
This document (EN 10088-2:2005) has been prepared by Technical Committee ECISS/TC 23 “Steels for heat
treatment, alloy steels and free-cutting steels - Qualities and dimensions”, the secretariat of which is held by
DIN.
This European Standard shall be given the status of a national standard, either by publication of an identical
text or by endorsement, at the latest by December 2005, and conflicting national standards shall be withdrawn
at the latest by December 2005.
This document supersedes EN 10088-2:1995.
EN 10088, under the general title "Stainless steels", consists of the following parts:
Part 1: List of stainless steels (including a table of European Standards, in which these stainless steels
are further specified, see Annex D),
Part 2: Technical delivery conditions for sheet/plate and strip of corrosion resisting steels for general
purposes,
Part 3: Technical delivery conditions for semi-finished products, bars, rods, wire, sections and bright
products of corrosion resisting steels for general purposes.
The European Organisation for Standardisation (CEN) draws attention to the fact that it is claimed that
compliance with this document may involve the use of patents concerning four steel grades.
CEN takes no position concerning the evidence, validity and scope of these patent rights.
The holder of these patent rights has assured CEN that they are willing to negotiate licenses, under
reasonable and non-discriminatory terms and conditions, with applicants throughout the world. In this respect,
the statements of the holders of these patent rights are registered with CEN. Information may be obtained
from:
Grades 1.4362, 1.4410 and 1.4477
Sandvik AB
SE-811 81 SANDVIKEN
Sweden
Grade 1.4652
Outokumpu Stainless AB
SE-77480 AVESTA
Sweden
Attention is drawn to the possibility that some of the elements within this document may be the subject of
patent rights other than those indicated above. CEN shall not be responsible for identifying any or all such
patent rights.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to: Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,
Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands,
Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
3
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SIST EN 10088-2:2005
EN 10088-2:2005 (E)
1 Scope
1.1 This part of EN 10088 specifies the technical delivery conditions for hot or cold rolled sheet/plate and
strip of standard grades and special grades of corrosion resisting stainless steels for general purposes.
NOTE General purposes include the use of stainless steels in contact with foodstuffs.
1.2 The general technical delivery conditions specified in EN 10021 apply in addition to the specifications of
this European Standard, unless otherwise specified in this European Standard.
1.3 This European Standard does not apply to components manufactured by further processing of the
product forms listed in 1.1 with quality characteristics altered as a result of such further 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.
EN 10002-1, Metallic materials - Tensile testing - Part 1: Method of test at ambient temperature.
EN 10002-5, Metallic materials - Tensile testing - Part 5: Method of test at elevated temperature.
EN 10021, General technical delivery requirements for steel and iron products.
EN 10027-1, Designation systems for steels - Part 1: Steel names, principal symbols.
EN 10027-2, Designation systems for steels - Part 2: Numerical system.
EN 10045-1, Metallic materials - Charpy impact test - Part 1: Test method.
EN 10052, Vocabulary of heat treatment terms for ferrous products.
EN 10079, Definition of steel products.
EN 10088-1, Stainless steels - Part 1: List of stainless steels.
EN 10163-2, Delivery requirements for surface condition of hot rolled steel plates, wide flats and sections -
Part 2: Plate and wide flats.
EN 10168:2004, Steel products – Inspection documents – List of information and description.
EN 10204:2004, Metallic products - Types of inspection documents.
EN 10307, Non-destructive testing - Ultrasonic testing of austenitic and austenitic-ferritic stainless steels flat
products of thickness equal to or greater than 6 mm (reflection method).
EN ISO 377, Steel and steel products - Location and preparation of samples and test pieces for mechanical
testing (ISO 377:1997).
EN 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
3651-2:1998).
EN ISO 6506-1, Metallic materials - Brinell hardness test - Part 1: Test method (ISO 6506-1:1999).
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EN 10088-2:2005 (E)
EN ISO 6507-1, Metallic materials - Vickers hardness test - Part 1: Test method (ISO 6507-1:1997).
EN 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 6508-1:1999).
EN ISO 14284, Steel and iron - Sampling and preparation of samples for the determination of chemical
composition (ISO 14284:1996).
3 Terms and definitions
For the purposes of this European Standard, the following terms and definitions apply:
3.1
stainless steels
definition in EN 10088-1 applies
3.2
corrosion resisting steels
steels with at least 10,5 % Cr and max. 1,20 % C if their resistance to corrosion is of primary importance
3.3
product forms
definitions in EN 10079 apply
3.4
types of heat-treatment
definitions in EN 10052 apply
3.5
general purposes
purposes other than the special purposes mentioned in the Bibliography
3.6
standard grades
grades with a relatively good availability and a wider range of application
3.7
special grades
grades for special use and/or with limited availability
4 Designation and ordering
4.1 Designation of steel grades
The steel names and steel numbers (see Tables 1 to 4) were formed in accordance with EN 10027-1 and EN
10027-2 respectively.
4.2 Designation to be used on ordering
The complete designation for ordering a product according to this document shall contain the following
information:
desired quantity;
product form (strip or sheet/plate);
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SIST EN 10088-2:2005
EN 10088-2:2005 (E)
where an appropriate dimensional standard is available (see Annex B) the number of the standard, plus
any choice of requirements;
if there is no dimensional standard, the nominal dimensions and tolerances required;
type of material (steel);
number of this document;
steel name or steel number;
if for the relevant steel in the table for the mechanical properties more than one treatment condition is
covered, the symbol for the desired heat treatment or cold worked condition;
desired process route (see symbols in Table 6);
if a verification of internal soundness is required, flat products with thickness ≥ 6 mm shall be tested in
accordance with EN 10307;
if an inspection document is required, its designation according to EN 10204.
EXAMPLE 10 plates of a steel grade with the name X5CrNi18-10 and the number 1.4301 as specified in EN 10088-
2 with nominal dimensions, thickness = 8 mm, width = 2000 mm, length = 5000 mm; tolerances on dimensions, shape and
mass as specified in EN 10029 with thickness tolerance class A and flatness tolerance class N, in process route 1D (see
Table 6), inspection document 3.1 as specified in EN 10204:
10 plates EN 10029-8A x 2000 x 5000
Steel EN 10088-2 - X5CrNi18-10+1D
Inspection document 3.1
or
10 plates EN 10029-8A x 2000 x 5000
Steel EN 10088-2 - 1.4301+1D
Inspection document 3.1
5 Classification of grades
Steels covered in this document are classified according to their structure into
ferritic steels,
martensitic steels,
precipitation hardening steels,
austenitic steels,
austenitic-ferritic steels.
See also Annex B to EN 10088-1
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SIST EN 10088-2:2005
EN 10088-2:2005 (E)
6 Requirements
6.1 Steelmaking process
Unless a special steelmaking process is agreed at the time of enquiry and order, the steelmaking process for
steels conforming to this document shall be at the discretion of the manufacturer.
6.2 Delivery condition
The products shall be supplied in the delivery condition agreed at the time of enquiry and order by reference
to the process route given in Table 6 and, where different alternatives exist, to the treatment conditions given
in Tables 7 to 11, 17 and 18 (see also Annex A).
6.3 Chemical composition
6.3.1 The chemical composition requirements given in Tables 1 to 4 apply with respect to the chemical
composition according to the cast analysis.
6.3.2 The product analysis may deviate from the limiting values for the cast analysis given in Tables 1 to 4
by the values listed in Table 5.
6.4 Chemical corrosion properties
Referring to resistance to intergranular corrosion as defined in EN ISO 3651-2, for ferritic, austenitic and
austenitic-ferritic steels the specification in Tables 7, 10 and 11 apply.
NOTE 1 EN ISO 3651-2 is not applicable for testing martensitic and precipitation hardening steels.
NOTE 2 The corrosion resistance of stainless steels is very dependant on the type of environment and can
therefore not always be clearly ascertained through laboratory tests. It is therefore advisable to draw on the available
experience of the use of the steels.
6.5 Mechanical properties
6.5.1 The mechanical properties at room temperature as specified in Tables 7 to 11 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 7, 8, 9, 10 and 11 shall be obtained from reference test pieces
which have received the appropriate heat treatment (simulated heat treatment).
For cold worked products, the tensile strength levels at ambient temperature as specified in Table 17 apply.
The available tensile strength levels in the cold worked condition are indicated in Table 19.
Alternatively, cold worked products can be ordered according to their 0,2 %-proof strength as given in Tables
18 and 20.
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.
6.5.2 The values in Tables 12 to 16 apply for the 0,2 %- and 1 %-proof strength at elevated temperatures.
6.6 Surface quality
Slight surface imperfections, inherent in the rolling process, are permitted.
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EN 10088-2:2005 (E)
When products are delivered in coil form, the degree and extent of such imperfections may be expected to be
greater, due to the impractibility of removing short lengths of coil. For hot-rolled quarto-plates (symbol P in
Tables 7 to 11), the requirements in EN 10163-2, class A2, apply unless otherwise agreed. For other products,
where necessary, more precise requirements on surface quality may be agreed at the time of enquiry and
order.
6.7 Internal soundness
The products shall be free of internal defects which would exclude them from being used for their usual
purpose. Ultrasonic testing of austenitic and austenitic-ferritic stainless steel flat products ≥ 6 mm may be
agreed at the time of enquiry and order in accordance with EN 10307.
6.8 Formability at room temperature
Cold formability may be verified by elongation in the tensile test.
6.9 Dimensions and tolerances on dimensions and shape
The dimensions and the tolerances on dimensions and shape are to be agreed at the time of enquiry and
order, as far as possible with reference to the dimensional standards listed in Annex B. EN 10029 shall
normally only be applied for product form P (individually rolled plates, "quarto plates") and not for product form
H (continuously rolled strip and plate), for which EN 10051 is to be applied. When applying EN 10029,
thickness tolerance class B shall apply, unless specifically agreed otherwise at the time of enquiry and order.
6.10 Calculation of mass and tolerances on mass
6.10.1 When calculating the nominal mass from the nominal dimensions the values given in
EN 10088-1 shall be used as a basis for the density of the steel concerned.
6.10.2 If the tolerances on mass are not specified in the dimensional standard listed in Annex B, they may
be agreed at the time of enquiry and order.
7 Inspection and testing
7.1 General
The appropriate process control, inspection and testing shall be carried out to ensure that the product
complies with the requirements of the order.
This includes the following:
suitable frequency of verification of the dimensions of the products;
adequate intensity of visual examination of the surface quality of the products;
appropriate frequency and type of test to ensure that the correct grade of steel is used.
The nature and frequency of these verifications, examinations and tests is determined in the light of the
degree of consistency that has been determined by the evidence of the quality system. In view of this,
verifications by specific tests for these requirements are not necessary unless otherwise agreed.
7.2 Agreement on tests and inspection documents
7.2.1 At the time of ordering the type of inspection document in accordance with EN 10204 may be agreed
for each delivery.
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SIST EN 10088-2:2005
EN 10088-2:2005 (E)
7.2.2 If it is agreed to issue a test report 2.2 in accordance with EN 10204:2004 it shall indicate the
following information:
a) information groups A, B and Z of EN 10168:2004;
b) results of the cast analysis in accordance with the code numbers C71 to C92 in EN 10168:2004.
7.2.3 If the issuing of an inspection certificate 3.1 or 3.2 according to EN 10204:2004 has been agreed,
specific inspections according to 7.3 are to be carried out and the following information shall be given in the
inspection document with the code numbers and details required by EN 10168:2004:
a) under 7.2.2 a);
b) under 7.2.2 b);
c) results of the mandatory tests marked in Table 21, second column, by "m";
d) result of any optional test or inspections agreed at the time of enquiry and order.
7.3 Specific inspection and testing
7.3.1 Extent of testing
The tests to be carried out, either mandatorily (m) or by agreement (o) and 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 21.
7.3.2 Selection and preparation of samples and test pieces
Sampling and sample preparation shall be in accordance with the requirements of EN ISO 14284
7.3.2.1
and EN ISO 377. In addition, the stipulations in 7.3.2.2 apply for the mechanical tests.
7.3.2.2 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. If it has been agreed that impact tests
shall be carried out, the test samples shall be taken from the same location.
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, hardening
and tempering shall be agreed.
7.3.2.3 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.
7.4 Test methods
7.4.1 The chemical analysis shall be carried out using appropriate European Standards. The choice of a
suitable physical or chemical analytical method for the analysis shall be at the discretion of the manufacturer.
The manufacturer shall declare the test method used if required.
NOTE The list of available European Standards on chemical analysis is given in CR 10261.
7.4.2 The tensile test at room temperature shall be carried out in accordance with EN 10002-1 taking into
account the additional or deviating conditions specified in Figure 1, footnote a.
The tensile strength, elongation after fracture and the 0,2 % proof strength shall be determined. In addition for
austenitic steels only, the 1 %-proof strength shall be determined.
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EN 10088-2:2005 (E)
7.4.3 If a tensile test at elevated temperature has been ordered, this shall be carried out in accordance with
EN 10002-5. 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.
7.4.4 If an impact test has been ordered, it shall be carried out in accordance with EN 10045-1 on test
pieces with a V-notch. The average obtained from three test pieces is considered to be the test result (see
also EN 10021).
7.4.5 The Brinell hardness test shall be carried out in accordance with EN ISO 6506-1, the Rockwell
hardness test in accordance with EN ISO 6508-1, and the Vickers hardness test in accordance with EN ISO
6507-1.
7.4.6 The resistance to intergranular corrosion shall be tested in accordance with EN ISO 3651-2.
7.4.7 Dimensions and dimensional tolerances of the products shall be tested in accordance with the
requirements of the relevant dimensional standards, where available.
7.5 Retests
See EN 10021.
8 Marking
8.1 Unless otherwise agreed in the order, with the exception mentioned in 8.4, each product shall be
marked with the information given in Table 22.
8.2 Unless otherwise agreed the method of marking and the material of marking in accordance to 8.1 shall
be at the option of the manufacturer.
Its quality shall be such that it shall be durable for at least one year in unheated storage under cover.
Corrosion resistance of the product shall not be impaired by the marking.
8.3 One surface of the product shall be marked. This will normally be the prime surface of products, where
only one surface is guaranteed to the required standard.
8.4 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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SIST EN 10088-2:2005
EN 10088-2:2005 (E)
Type of Product Direction of the Distance of the test piece from the rolled surface
test thickness longitudinal axis of the test
piece piece in relation to the
t
principal direction of rolling
at a final rolling width of
mm < 300 mm ≥ 300 mm mm
≤ 30
a
Tensile
longitudinal transverse
> 30
b
Impact
> 10 longitudinal transverse
a
In cases of doubt or dispute the gauge length shall be L = 5,65 √S for test pieces from products t ≥ 3 mm.
o o
For products t < 3 mm thickness, non proportional test pieces with a gauge length of 80 mm and a width of 20
mm shall be used, but test pieces with a gauge length of 50 mm and a width of 12,5 mm may also be applied.
For products with a thickness 3 mm < t ≤ 10 mm, flat proportional test pieces with two rolled surfaces and a
maximum width of 30 mm shall be used. For products with a thickness t > 10 mm, one of the following
proportional test pieces shall be used:
- either a flat test piece with a maximum thickness of 30 mm; the thickness may be reduced to 10 mm
by machining, but one rolled surface must be preserved.
- or a round test piece with a diameter of ≥ 5 mm the axis of which shall be located as close as possible
to a plane in the outer sixth of the product thickness t.
b
Longitudinal axis of the notch shall always be perpendicular to the rolled surface of the product.
c
In the case of product thickness greater than 30 mm, the impact test piece may be taken at quarter of the
product thickness.
Key
1 Rolled surface
Figure 1 — Position of test pieces for flat products
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SIST EN 10088-2:2005
EN 10088-2:2005 (E)
Key
1 Rolling direction
Figure 2 — Direction of bending the test piece in relation to the rolling direction in the resistance to
intergranular corrosion test
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SIST EN 10088-2:2005
EN 10088-2:2005 (E)
a
Table 1 — Chemical composition (cast analysis) of ferritic corrosion resisting steels
Steel designation % by mass
Name Number C Si Mn P S N Cr Mo Nb Ni Ti Others
max. max. max max. max. max.
Standard grades
X2CrNi12 1.4003 0,030 1,00 1,50 0,040 0,015 0,030 10,5 to12,5 - - 0,30 to 1,00 - -
X2CrTi12 1.4512 0,030 1,00 1,00 0,040 0,015 - 10,5 to 12,5 - - - [ 6x (C+N)] to 0,65 -
X6CrNiTi12 1.4516 0,08 0,70 1,50 0,040 0,015 - 10,5 to 12,5 - - 0,50 to 1,50 0,05 to 0,35 -
b
X6Cr13 1.4000 0,08 1,00 1,00 0,040 0,015 - 12,0 to 14,0 - - - - -
b
X6CrAI13 1.4002 0,08 1,00 1,00 0,040 0,015 - 12,0 to 14,0 - - - - AI: 0,10 to 0,30
b
X6Cr17 1.4016 0,08 1,00 1,00 0,040 0,015 - 16,0 to 18,0 - - - - -
b
X3CrTi17 1.4510 0,05 1,00 1,00 0,040 0,015 - 16,0 to 18,0 - - - [4x(C+N) + 0,15] -
c
to 0,80
X3CrNb17 1.4511 0,05 1,00 1,00 0,040 0,015 - 16,0 to 18,0 - 12 x C to 1,00 - - -
b
X6CrMo17-1 1.4113 0,08 1,00 1,00
...
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