Steel flat products for pressure purposes — Technical delivery conditions — Part 2: Non-alloy and alloy steels with specified elevated temperature properties

ISO 9328-2:2018 specifies the technical delivery conditions for plates and strip for pressure equipment made of non-alloy and alloy steels as specified in Tables A.1 and B.1. The requirements and definitions of ISO 9328‑1 also apply to this document.

Produits plats en acier pour service sous pression — Conditions techniques de livraison — Partie 2: Aciers non alliés et aciers alliés avec caractéristiques spécifiées à température élevée

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Published
Publication Date
31-Jan-2018
Current Stage
6060 - International Standard published
Start Date
01-Feb-2018
Completion Date
01-Feb-2018
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INTERNATIONAL ISO
STANDARD 9328-2
Fourth edition
2018-02
Steel flat products for pressure
purposes — Technical delivery
conditions —
Part 2:
Non-alloy and alloy steels with
specified elevated temperature
properties
Produits plats en acier pour service sous pression — Conditions
techniques de livraison —
Partie 2: Aciers non alliés et aciers alliés avec caractéristiques
spécifiées à température élevée
Reference number
ISO 9328-2:2018(E)
ISO 2018
---------------------- Page: 1 ----------------------
ISO 9328-2:2018(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2018

All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may

be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting

on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address

below or ISO’s member body in the country of the requester.
ISO copyright office
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Tel. +41 22 749 01 11
Fax +41 22 749 09 47
copyright@iso.org
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Published in Switzerland
ii © ISO 2018 – All rights reserved
---------------------- Page: 2 ----------------------
ISO 9328-2:2018(E)
Contents Page

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

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

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

3 Terms and definitions ..................................................................................................................................................................................... 1

4 Classification and designation ............................................................................................................................................................... 1

4.1 Classification ............................................................................................................................................................................................. 1

4.2 Designation ................................................................................................................................................................................................ 2

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

5.1 Mandatory information ................................................................................................................................................................... 2

5.2 Options ........................................................................................................................................................................................................... 2

5.3 Example for ordering ......................................................................................................................................................................... 3

6 Requirements .......................................................................................................................................................................................................... 3

6.1 Steelmaking process ........................................................................................................................................................................... 3

6.2 Delivery condition ................................................................................................................................................................................ 3

6.3 Chemical composition ...................................................................................................................................................................... 4

6.4 Mechanical properties ...................................................................................................................................................................... 5

6.5 Surface condition .................................................................................................................................................................................. 5

6.6 Internal soundness .............................................................................................................................................................................. 5

6.7 Weldability .................................................................................................................................................................................................. 5

6.8 Dimensions and tolerances on dimensions .................................................................................................................... 6

6.9 Calculation of mass .............................................................................................................................................................................. 6

6.10 Resistance to hydrogen-induced cracking....................................................................................................................... 6

6.11 Embrittlement of CrMo steels .................................................................................................................................................... 6

7 Inspection .................................................................................................................................................................................................................... 6

7.1 Types of inspection and inspection documents ......................................................................................................... 6

7.2 Tests to be carried out ...................................................................................................................................................................... 6

7.3 Retests, sorting and reprocessing ........................................................................................................................................... 6

8 Sampling ........................................................................................................................................................................................................................ 6

9 Test methods ............................................................................................................................................................................................................. 6

10 Marking .......................................................................................................................................................................................................................... 7

Annex A (normative) Chemical composition and mechanical properties of products based

on European standards .................................................................................................................................................................................. 8

Annex B (normative) Chemical composition and mechanical properties of products based

on ASTM/ASME or JIS standards .......................................................................................................................................................17

Annex C (informative) Steel designations in accordance with this document and

designation of comparable steel grades in national or regional standards ........................................22

Annex D (informative) Guidelines for heat treatment ....................................................................................................................24

Annex E (informative) Critical time-temperature parameter P and possible
crit.

combinations of stress relieving temperature and holding time ...................................................................26

Annex F (informative) Reference data relating to strength for 1 % (plastic) creep strain and

creep rupture ........................................................................................................................................................................................................27

Annex G (informative) Evaluation of resistance to hydrogen-induced cracking .................................................33

Annex H (informative) Step cooling test ........................................................................................................................................................34

Bibliography .............................................................................................................................................................................................................................35

© ISO 2018 – All rights reserved iii
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ISO 9328-2:2018(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 voluntary nature of standards, the meaning of ISO specific terms and

expressions related to conformity assessment, as well as information about ISO's adherence to the

World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see the following

URL: www .iso .org/ iso/ foreword .html.

This document was prepared by Technical Committee ISO/TC 17, Steel, Subcommittee SC 10, Steel for

pressure purposes.

This fourth edition cancels and replaces the third edition (ISO 9328-2:2011), which has been technically

revised. The following changes have been made:
— the term “product thickness” has been replaced with “nominal thickness”;
— normalizing rolling is also considered for steel grade 16Mo3 (see Annex A);
— the technical data in Annex A have been aligned with EN 10028-2;

— in Table B.1, “B ≤ 0,001 0” has been added and the specifications of “P” and “S” have been changed.

A list of all the parts in the ISO 9328 series can be found on the ISO website.
iv © ISO 2018 – All rights reserved
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INTERNATIONAL STANDARD ISO 9328-2:2018(E)
Steel flat products for pressure purposes — Technical
delivery conditions —
Part 2:
Non-alloy and alloy steels with specified elevated
temperature properties
1 Scope

This document specifies the technical delivery conditions for plates and strip for pressure equipment

made of non-alloy and alloy steels as specified in Tables A.1 and B.1. The requirements and definitions

of ISO 9328-1 also apply to this document.
2 Normative references

The following documents are referred to in the text in such a way that some or all of their content

constitutes requirements 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 4948-1, Steels — Classification — Part 1: Classification of steels into unalloyed and alloy steels based

on chemical composition

ISO 4948-2, Steels — Classification — Part 2: Classification of unalloyed and alloy steels according to main

quality classes and main property or application characteristics

ISO 9328-1:2018, Steel flat products for pressure purposes — Technical delivery conditions — Part 1:

General requirements
3 Terms and definitions

For the purposes of this document, the terms and definitions given in ISO 9328-1 apply.

ISO and IEC maintain terminological databases for use in standardization at the following addresses:

— IEC Electropedia: available at http:// www .electropedia .org/
— ISO Online browsing platform: available at https:// www .iso .org/ obp
4 Classification and designation
4.1 Classification

In accordance with ISO 4948-1 and ISO 4948-2, the steel grades P235GH, P265GH, P295GH and P355GH

(see Annex A) and PT410GH, PT450GH and PT480GH (see Annex B) are non-alloy-quality steels. All

other grades are alloyed special steels.
© ISO 2018 – All rights reserved 1
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ISO 9328-2:2018(E)
4.2 Designation
Shall be in accordance with ISO 9328-1.

NOTE 1 Non-alloy grades in Annex A are classified in accordance with their yield strength, non-alloy grades in

Annex B are classified in accordance with their tensile strength.

NOTE 2 Information on the designation of comparable steel grades in national or regional standards is given

in Annex C.
5 Information to be supplied by the purchaser
5.1 Mandatory information
Shall be in accordance with ISO 9328-1 and 6.2.3.
5.2 Options

A number of options are specified in this document. These are listed below under a) to t). Additionally,

the relevant options of ISO 9328-1 apply. If the purchaser does not indicate a wish to implement any of

these options at the time of enquiry and order, the products shall be supplied in accordance with the

basic specification (shall be in accordance with ISO 9328-1):
a) tests in the simulated normalized condition (see 6.2.2);
b) products delivered untreated (see 6.2.4 and 6.2.5);

c) maximum carbon-equivalent value for P235GH, P265GH, P295GH and P355GH (see 6.3.3);

d) specification of an impact energy value of 40 J (see Table A.2, footnote );
e) test on simulated heat-treated samples (see 6.7.2);
f) hydrogen-induced cracking (HIC) test in accordance with Annex G (see 6.10);
g) step cooling test in accordance with Annex H (see 6.11);

h) mid-thickness test pieces for the impact test and/or tensile test (see Clause 8);

i) lower copper content and maximum tin content (see Table A.1, footnote );
j) minimum chromium content of 0,80 % (see Table A.1, footnote );

k) maximum carbon content of 0,17 % for nominal thicknesses greater than 150 mm (see Table A.1,

footnote );

l) maximum contents of Al (≤ 0,020 %), Ti (≤ 0,01 %) and Zr (≤ 0,01 %) (see Table A.1, footnote );

m) mechanical properties for nominal thicknesses > 250 mm (see Table A.2, footnote );

n) specification of the delivery condition +QT where the usual delivery condition is +NT (see Table A.2,

c c
footnote and Table A.3, footnote );
o) additional impact energy values (see Table A.2, footnote );

p) 0,2 % proof strength (R ) values at elevated temperature for increased nominal thicknesses (see

p0,2
Table A.3, footnote );

q) increased carbon content for grades PT410GH, PT450GH and PT480GH (see Table B.1, footnote );

r) Al additions not permitted (see Table B.1, footnote );
2 © ISO 2018 – All rights reserved
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ISO 9328-2:2018(E)

s) specification of the delivery condition +NT for the grade 14CrMo9-10 and of the delivery condition

+QT for the grades 14CrMoV9-10 and 13CrMoV12-10 (see Table B.2, footnote );
t) requirement for impact tests and values (see Table B.2, footnote ).
5.3 Example for ordering

An order of 10 plates with nominal dimensions thickness = 50 mm, width = 2 000 mm, length =

10 000 mm, made of a steel grade with the name 16Mo3 as specified in this document, with inspection

certificate 3.1 as specified in ISO 10474, is designated as follows:
10 plates – 50 × 2 000 × 10 000 – ISO 9328-2 16Mo3 – Inspection certificate 3.1
6 Requirements
6.1 Steelmaking process
Shall be in accordance with ISO 9328-1.
6.2 Delivery condition

6.2.1 Unless otherwise agreed at the time of enquiry and order, the products covered by this document

shall be supplied in the usual conditions given in Tables A.2 and B.2.

6.2.2 Normalizing may, at the discretion of the manufacturer, be replaced with normalizing rolling for

the steel grades P235GH, P265GH, P295GH, P355GH and 16Mo3 (see Annex A). In this case, additional

tests in the simulated normalized condition with an agreed frequency of testing may be agreed upon

at the time of enquiry and order to verify that the obtained properties also comply with the standard

requirements (see 5.2, Option 1).

6.2.3 For products made of steel grades PT410GH, PT450GH, PT480GH, 19MnMo4-5, 19MnMo5-5 and

19MnMoNi5-5 (see Table B.2), the requested delivery condition normalized (+N) or untreated (+AR) (but

see 6.2.5) or, where applicable, quenched and tempered (+QT) shall be specified at the time of enquiry

and order.

6.2.4 If so agreed at the time of enquiry and order, products made of steel grades P235GH, P265GH,

P295GH, P355GH and 16Mo3 (see Table A.2) may also be delivered in the untreated condition (but see

6.2.5). Products made of one of the other alloy grades may be supplied in the tempered or normalized

condition or in the untreated condition, if so agreed.

The plates delivered in untreated conditions shall be appropriately marked (+AR) to denote that heat

treatment has not been performed. Steel grades containing more than 2 % Cr (inclusive) shall be

supplied in a stress relieved condition as a minimum.
NOTE Annex D contains heat treatment information for the purchaser.

6.2.5 For products delivered untreated in accordance with 6.2.3 and 6.2.4, testing shall be carried out

by the processor on test pieces in usual delivery condition as indicated in Tables A.2 and B.2.

NOTE Tests in a simulated heat-treated condition are made to verify the suitability of the delivered product

in the delivery condition +N, or +NT or +QT, as appropriate. However, they do not discharge the processor from

the obligation of providing proof of the specified properties in the finished product when adequately heat treated.

© ISO 2018 – All rights reserved 3
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ISO 9328-2:2018(E)
6.3 Chemical composition

6.3.1 The requirements of Tables A.1 and B.1 shall apply for the chemical composition according to the

cast (heat) analysis.

6.3.2 The product analysis shall not deviate from the values for the cast (heat) analysis specified in

Tables A.1 and B.1 by more than the values given in Table 1.

6.3.3 A maximum value for the carbon equivalent may be agreed upon at the time of enquiry and order

for steel grades P235GH, P265GH, P295GH and P355GH (see Annex A) and PT410GH, PT450GH and

PT480GH (see Annex B). In this case, Formula (1) shall apply for calculation of the carbon-equivalent

value (CEV):
Mn Cr++Mo VNiC+ u
CEVC=+ + + (1)
65 15

Table 1 — Permissible product analysis tolerances on the limiting values given in Tables A.1

and B.1 for the cast (heat) analysis
Specified value in the cast (heat)
Permissible deviation
analysis according to
of the product analysis
Element
Tables A.1 and B.1
% by mass % by mass
C ≤ 0,31 ±0,02
≤ 0,35 ±0,05
> 0,35 to ≤ 1,00 ±0,06
≤ 1,00 ±0,05
> 1,00 to ≤ 1,70 ±0,10
≤ 0,015 +0,003
> 0,015 to ≤ 0,030 +0,005
S ≤ 0,010 +0,003
Al ≥ 0,010 ±0,005
B ≤ 0,003 +0,000 5
Ca ≤ 0,015 +0,003
≤ 0,020 +0,002
> 0,020 to ≤ 0,070 ±0,005
≤ 2,00 ±0,05
> 2,00 to ≤ 10,00 ±0,10
≤ 0,30 ±0,05
> 0,30 to ≤ 0,80 ±0,10
≤ 0,35 ±0,03
> 0,35 to ≤ 1,10 +0,04
Nb ≤ 0,10 ±0,01
≤ 0,30 +0,05
> 0,30 to ≤ 1,30 ±0,10

If several product analyses are carried out on one cast, and the contents of an individual element determined lie

outside the permissible range of the chemical composition specified for the cast analysis, then it is only allowed to exceed

the permissible maximum value or fall short of the permissible minimum value, but not both for one cast.

In the case of steel grades specified in Annex B, the maximum values listed in Table B.1 also apply for the product

analysis, except that Boron shall be 0,001 5 % for PT410GH, PT450GH, PT480GH, 19MnMo4-5, 19MnMo5-5, 19MnMo6-5,

19MnMoNi5-5, 19MnMoNi6-5 and 0,003 % for 14CrMoV9-10.
4 © ISO 2018 – All rights reserved
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ISO 9328-2:2018(E)
Table 1 (continued)
Specified value in the cast (heat)
Permissible deviation
analysis according to
of the product analysis
Element
Tables A.1 and B.1
% by mass % by mass
Cr+Cu+Mo+Ni ≤ 1,00 +0,05
Ti ≤ 0,035 ±0,01
≤ 0,05 ±0,01
> 0,05 to ≤ 0,30 ±0,03

If several product analyses are carried out on one cast, and the contents of an individual element determined lie

outside the permissible range of the chemical composition specified for the cast analysis, then it is only allowed to exceed

the permissible maximum value or fall short of the permissible minimum value, but not both for one cast.

In the case of steel grades specified in Annex B, the maximum values listed in Table B.1 also apply for the product

analysis, except that Boron shall be 0,001 5 % for PT410GH, PT450GH, PT480GH, 19MnMo4-5, 19MnMo5-5, 19MnMo6-5,

19MnMoNi5-5, 19MnMoNi6-5 and 0,003 % for 14CrMoV9-10.
6.4 Mechanical properties

6.4.1 The values given in Tables A.2, A.3 and B.2 (see also ISO 9328-1) shall apply.

6.4.2 Annex F gives, for the grades in Annex A, mean values as preliminary data for the purchaser on

the strength for 1 % (plastic) creep strain and creep rupture.
6.5 Surface condition
Shall be in accordance with ISO 9328-1.
6.6 Internal soundness
Shall be in accordance with ISO 9328-1.
6.7 Weldability

6.7.1 The steel grades specified in this document shall be suitable for welding processes in current use

(see also the Note to 6.7.2).

6.7.2 Information on welding can be found in appropriate documents, e.g. EN 1011-1 and EN 1011-2

or IIS/IIW 382-71.

Excessive post-weld heat treatment (PWHT) conditions can decrease the mechanical properties. When

in stress relieving, the intended time-temperature parameter shown by Formula (2):

PT=+20 lgt ×10 (2)
where
T is the stress relieving temperature, in kelvins;
t is the holding time, in hours.

exceeds the critical (P .) values in Annex E, or where regarded as necessary in the case of Annex B

crit

steel grades, the purchaser should, in his enquiry and order, inform the manufacturer accordingly.

© ISO 2018 – All rights reserved 5
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ISO 9328-2:2018(E)

Where appropriate, tests on simulated heat-treated samples may be agreed at the time of enquiry and

order to check whether, after such a treatment, the properties specified in this document can still be

regarded as valid (see 5.2, Option 5).
6.8 Dimensions and tolerances on dimensions
Shall be in accordance with ISO 9328-1.
6.9 Calculation of mass
Shall be in accordance with ISO 9328-1.
6.10 Resistance to hydrogen-induced cracking

Since carbon and low-alloy steels may be susceptible to cracking when exposed to corrosive H S-

containing environments, usually referred to as “sour service”, a test to evaluate the resistance to

hydrogen-induced cracking in accordance with Annex G or another test method may be agreed at the

time of enquiry and order.
6.11 Embrittlement of CrMo steels

CrMo steels may tend to become brittle in service at temperatures between approximately 400 °C and

500 °C. This possible tendency for embrittlement can be simulated in the laboratory with the so-called

step cooling test. In this test, a specimen is exposed to a temperature-time cycle as given in Figure H.1.

The shift of a transition curve before and after the step cooling test is a measure for the embrittlement.

A step cooling test in accordance with Annex H may be agreed upon at the time of enquiry and order.

NOTE The step cooling test is primarily applicable to the weld metal and the heat-affected zone.

7 Inspection
7.1 Types of inspection and inspection documents
Shall be in accordance with ISO 9328-1.
7.2 Tests to be carried out
Shall be in accordance with ISO 9328-1 and 6.10 and 6.11.
7.3 Retests, sorting and reprocessing
Shall be in accordance with ISO 9328-1.
8 Sampling
Shall be in accordance with ISO 9328-1.

For an impact test (and/or the tensile test), that deviates from ISO 9328-1:2018, Table 3, footnote , test

pieces taken from the mid-thickness may be agreed upon at the time of enquiry and order. In this case,

test temperatures and minimum impact energy values shall also be agreed upon.
9 Test methods
9.1 Shall be in accordance with ISO 9328-1, and Annexes D and E.
6 © ISO 2018 – All rights reserved
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ISO 9328-2:2018(E)

9.2 For the steel grades specified in Annex B, the impact test shall only be carried out if so agreed at

the time of enquiry and order. Requirements and test conditions shall then also be agreed (see Table B.2,

footnote ).
10 Marking
Shall be in accordance with ISO 9328-1.
© ISO 2018 – All rights reserved 7
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ISO 9328-2:2018(E)
Annex A
(normative)
Chemical composition and mechanical properties of products
based on European standards
8 © ISO 2018 – All rights reserved
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ISO 9328-2:2018(E)
© ISO 2018 – All rights reserved 9
Table A.1 — Chemical composition [cast (heat) analysis]
% by mass
Steel grade C Si Mn P S Al N Cr Cu Mo Nb Ni Ti V Others
total
max. max. max.
0,60
d d

P235GH ≤ 0,16 ≤ 0,35 0,025 0,010 ≥ 0,020 ≤ 0,012 ≤ 0,30 ≤ 0,30 ≤ 0,08 ≤ 0,020 ≤ 0,30 0,03 ≤ 0,02 —

to 1,20
0,80 to
d d

P265GH ≤ 0,20 ≤ 0,40 0,025 0,010 ≥ 0,020 ≤ 0,012 ≤ 0,30 ≤ 0,30 ≤ 0,08 ≤ 0,020 ≤ 0,30 0,03 ≤ 0,02

1,40
Cr+C+
0,08 to
d d

P295GH ≤ 0,40 0,90 to 1,50 0,025 0,010 ≥ 0,020 ≤ 0,012 ≤ 0,30 ≤ 0,30 ≤ 0,08 ≤ 0,020 ≤ 0,30 0,03 ≤ 0,02 Mo+Ni:

0,20
≤ 0,70
0,10 to
d d

P355GH ≤ 0,60 1,10 to 1,70 0,025 0,010 ≥ 0,020 ≤ 0,012 ≤ 0,30 ≤ 0,30 ≤ 0,08 ≤ 0,040 ≤ 0,30 0,03 ≤ 0,02

0,22
0,12 to 0,25
16Mo3 ≤ 0,35 0,40 to 0,90 0,025 0,010 ≤ 0,012 ≤ 0,30 ≤ 0,30 — ≤ 0,30 — — —
0,20 to 0,35
0,45

18MnMo4-5 ≤ 0,20 ≤ 0,40 0,90 to 1,50 0,015 0,005 ≤ 0,012 ≤ 0,30 ≤ 0,30 — ≤ 0,30 — — —

to 0,60
0,15 to 1,00 to 0,45 0,40
20MnMoNi4-5 ≤ 0,40 0,020 0,010 ≤ 0,012 ≤ 0,20 ≤ 0,20 — — ≤ 0,02 —
0,23 1,50 to 0,60 to 0,80
15NiCuM- 0,25 0,80 to 0,50 0,25 0,015 1,00
≤ 0,17 0,025 0,010 ≥ 0,015 ≤ 0,020 ≤ 0,30 — — —
oNb5-6-4 to 0,50 1,20 to 0,80 to 0,50 to 0,045 to 1,30
0,08 to 0,40 to 0,70 0,40
13CrMo4-5 ≤ 0,35 0,025 0,010 ≤ 0,012 ≤ 0,30 — — — — —
0,18 1,00 to 1,15 to 0,60

Elements not listed in this table shall not be intentionally added to the steel without the agreement of the purchaser, except for finishing the cast. All appropriate measures

shall be taken to prevent the addition from scrap or other materials used in steelmaking of these elements which may affect the mechanical properties and usability.

A lower maximum copper content and/or a maximum sum of copper and tin content, e.g. (Cu + 6Sn) ≤ 0,33 %, may be agreed upon at the time of enquiry and order, e.g. with

regard to hot formability for the grades where only a maximum copper content is specified.

For nominal thicknesses < 6 mm, a minimum manganese content of 0,20 % lower than specified is permitted.

A ratio Al:N ≥ 2 shall apply.

The Al content of the cast shall be determined and given in the inspection document.

If resistance to pressurized hydrogen is of importance, a minimum content of 0,80 % Cr may be agreed upon at the time of enquiry and order.

For nominal thicknesses greater than 150 mm, a maximum content of 0,17 % C may be agreed upon at the time of enquiry and order.

This grade may be produced with additions of either Ti + B or Nb + Ca. The following minimum contents shall apply: Ti ≥ 0,015 % and B ≥ 0,001 % in the case of additions of

Ti + B; Nb ≥ 0,015 % and Ca ≥ 0,000 5 % in the case of additions of Nb + Ca.

If so agreed at the time of enquiry and order, the Al content shall be ≤ 0,020 %, the Ti content shall be ≤ 0,01 %, and a Zr content of ≤ 0,01 % is specified.

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ISO 9328-2:2018(E)
10 © ISO 2018 – All rights reserved
Table A.1 (continued)
% by mass
Steel grade C Si Mn P S Al N Cr Cu Mo Nb Ni Ti V Others
total
max. max. max.
0,60
d d

P235GH ≤ 0,16 ≤ 0,35 0,025 0,010 ≥ 0,020 ≤ 0,012 ≤ 0,30 ≤ 0,30 ≤ 0,08 ≤ 0,020 ≤ 0,30 0,03 ≤ 0,02 —

to 1,20
0,50 0,40 to 1,00 0,45
13CrMoS
...

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