Stainless steels -- Chemical composition

ISO 15510:2014 lists the chemical compositions of stainless steels agreed by ISO/TC 17/SC 4, mainly on the basis of a composition of the specifications in existing ISO, ASTM, EN, JIS, and GB (Chinese) standards. They apply to all wrought product forms including ingots and semi-finished material.

Aciers inoxydables -- Composition chimique

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Publication Date
19-May-2014
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6060 - International Standard published
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26-Mar-2014
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20-May-2014
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INTERNATIONAL ISO
STANDARD 15510
Second edition
2014-05-15
Stainless steels — Chemical
composition
Aciers inoxydables — Composition chimique
Reference number
ISO 15510:2014(E)
ISO 2014
---------------------- Page: 1 ----------------------
ISO 15510:2014(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2014

All rights reserved. Unless otherwise specified, 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.
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Published in Switzerland
ii © ISO 2014 – All rights reserved
---------------------- Page: 2 ----------------------
ISO 15510:2014(E)
Contents Page

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

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

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

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

4 Chemical composition ..................................................................................................................................................................................... 1

5 Designation of comparable steels ....................................................................................................................................................... 1

Annex A (informative) Designation of the steels given in Table 1 and of comparable grades

covered in various designation systems ...................................................................................................................................17

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

covered in various International Standards .........................................................................................................................42

Annex C (informative) Classification of grades .......................................................................................................................................52

Annex D (informative) Density values for stainless steels..........................................................................................................55

Bibliography .............................................................................................................................................................................................................................61

© ISO 2014 – All rights reserved iii
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ISO 15510:2014(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, Steel, Subcommittee SC 4, Heat treatable and

alloy steels.

This second edition cancels and replaces the first edition (ISO 15510:2010), which has been technically

revised.
iv © ISO 2014 – All rights reserved
---------------------- Page: 4 ----------------------
INTERNATIONAL STANDARD ISO 15510:2014(E)
Stainless steels — Chemical composition
1 Scope

This International Standard lists the chemical compositions of stainless steels agreed by ISO/TC 17/SC 4,

mainly on the basis of a composition of the specifications in existing ISO, ASTM, EN, JIS, and GB (Chinese)

standards. They apply to all wrought product forms including ingots and semi-finished material.

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/TS 4949, Steel names based on letter symbols
ISO 6929, Steel products — Vocabulary
3 Terms and definitions

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

3.1
stainless steel

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

Note 1 to entry: For the classification of stainless steels according to their structure, composition and application,

see Annex C.
4 Chemical composition

The chemical composition of stainless steels approved by ISO/TC 17/SC 4 is given in Table 1.

WARNING — Due to hazardous effects to health and environmental problems of lead (Pb), it is

recommended to use steels with sulfur additions instead. These steels generally have comparable

properties relating to machinability.

NOTE If, in special cases, for example, an ISO committee charged with the establishment or revision

of a standard for a specific product or application of stainless steels sees the necessity of deviating from the

specifications in Table 1, it should inform ISO/TC 17/SC 4 (Secretariat’s address: FES/DIN, Postfach 10 51 45,

40042 Dusseldorf, Germany) of the reasons for this and try, before such deviations are considered, to achieve

consensus for a corresponding modification to Table 1.
5 Designation of comparable steels

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

based on a 10-digit code presented in 4 subgroups of digits: 4 digits-3 digits-2 digits-1 digit.

XXXX-YYY-ZZ-A
© ISO 2014 – All rights reserved 1
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ISO 15510:2014(E)

The steel number of each grade is based on a decision of the ISO/TC 17/SC 4 group, taking into account

several commonly used existing standards and designations.
In particular, the principles below have been used for the steel numbers.

— The first subgroup contains four digits and is comparable to the European designation (EN numbers):

keeping the number on the right side and dropping the “1”.

— The second subgroup contains three digits and refers, in most cases, to the three middle digits of the

UNS number used by ASTM. In the case of the ISO designation, contrary to the UNS system, no letter

(an S or an N in the case of stainless steels) is used as a start. This 3-digit subgroup allows reference

to the obsolete AISI numbers or to the numerical part of the standard designations used in other

countries, such as Japan (JIS) and China (GB).

— The third subgroup contains two digits. In most cases, similar principles to those used in the UNS

have been adopted. Care should be taken because some differences can exist among UNS, Chinese,

and ISO designations (see Table 2). The principles stated in Table 2 apply within each YYY series.

— The last digit is a single letter that allows the reader to identify, in a simple way, if the grade

composition corresponds exactly to that included in one or more of the four existing standard

practices from Europe, the USA, Japan, or China. If the composition is a compromise between several

standards, it is then a new and genuine ISO composition. The last digit of the ISO designation is then

I (see Table 3).

Table 4 gives complementary explanations for the use of the ISO numbering system through examples.

Tables A.1, A.2, and A.3 in Annex A give the designations of stainless steels which are listed in other

designation systems and are identical or comparable to the grades in Table 1. In Table A.1, the sequence

of steels is the same as in Table 1. In Table A.2, the sequence is given in the order of the three middle

digits defined by the first three UNS numbers. In Table A.3, the sequence is given in the order of the

European system.

Table B.1 in Annex B gives a list where the steel grades of Table 1 are to be found in other International

Standards.
Table D.1 in Annex D comprises density values for the steels given in Table 1.

NOTE 1 To compare similar grades, it is necessary to check each element before making a substitution.

NOTE 2 Steels in this International Standard and in ISO 16143-1 to ISO 16143-3 are listed according to a line

number (see Table A.1) with the following rules. The primary rule is ordering by austentic steels (without Mo),

austenitic steels with Mo, austentic steels with Ni/Co as the main alloying elements, austenitic-ferritic (duplex)

steels first without Mo then with Mo, ferritic steels first without Mo then with Mo, martensitic steels first without

Mo then with Mo and precipitation-hardening steels without and with Mo. The secondary rule is ordering by the

line numbers as given in Table A.1. The line number consists of two letters, two digits. and a last letter. For the

first letter ‘a’ means for austenitic steels, ‘d’ for duplex steels, ‘f’ for ferritic steels, ‘m’ for martensitic steels and

‘p’ for precipitation-hardening steels. The second letter means ‘P’ for pure without Mo, ‘M’ for molybdenum and

‘N’ for Ni/Co as the main alloying element. The next two digits are the sum of the main alloying elements of Cr, Mo

and Ni/Mn/Co (for the ferritic and martensitic steels it is only the sum of Cr and Mo). The last digit stands for the

relative C-content (‘A’ means low carbon and ‘Z’ means high carbon). Although, for example, for the first some 25

austenitic steels are strictly ordered by this criteria it is not consequently applied when grouping of steel grades

with the same characteristics seems to be beneficial, like austenitic-maganese-alloyed steels or steels of the AISI

316 series. The line number is by no means a steel designation and it is not for commercial purposes.

2 © ISO 2014 – All rights reserved
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ISO 15510:2014(E)
© ISO 2014 – All rights reserved 3

Table 1 — International agreed specifications for the composition of stainless steels (applicable for cast analysis)

Steel designation % (mass fraction)
ISO name ISO number Line number C Si Mn P S Cr Mo Ni N Others
a) Austenitic steels

X5CrNi17-7 4319-301-00-I AP24H 0,07 1,00 2,00 0,045 0,030 16,0 to 18,0 — 6,0 to 8,0 0,10 —

X12CrNi17-
4310-301-09-X AP24N 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 AP25A 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 —

X6CrNiCu17-8-2 4567-304-76-I AP25J 0,08 1,70 3,00 0,045 0,030 15,0 to 18,0 — 6,0 to 9,0 — Cu: 1,00 to 3,0

X10CrNi18-8 4310-301-00-I AP26L 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 —

b c

X2CrNi18-9 4307-304-03-I AP27B 0,030 1,00 2,00 0,045 0,030 17,5 to 19,5 — 8,0 to 10,5 0,10 —

X7CrNi18-9 4948-304-09-I AP27L 0,04 to 0,10 1,00 2,00 0,045 0,030 17,5 to 19,5 — 8,0 to 11,0 0,10 —

4325-302- 0,030 to
X9CrNi18-9 AP27N 1,00 2,00 0,045 0,030 17,0 to 19,0 — 8,0 to 10,0 0,10 —
00-E 0,15

X10CrNiS18-9 4305-303-00-I AP27M 0,12 1,00 2,00 0,060 ≥0,15 17,0 to 19,0 — 8,0 to 10,0 0,10 Cu:

X12CrNiSe18-9 4625-303-23-X AP27O 0,15 1,00 2,00 0,20 0,060 17,0 to 19,0 — 8,0 to 10,0 — Se: ≥0,15

X12CrNiSi18-9-3 4326-302-15-I AP27P 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 AP27A 0,030 1,00 2,00 0,045 0,030 17,5 to 19,5 — 8,0 to 11,0 0,12 to 0,22 —

X6CrNiCu18-9-2 4567-304-98-X AP27J 0,08 1,00 2,00 0,045 0,030 17,0 to 19,0 — 8,0 to 10,5 — Cu: 1,00 to 3,0

X3CrNiCu18-9-4 4567-304-30-I AP27F 0,04 1,00 2,00 0,045 0,030 17,0 to 19,0 — 8,0 to 10,5 0,10 Cu: 3,0 to 4,0

X6CrNiCuS18-9-2 4570-303-31-I AP27I 0,08 1,00 2,00 0,045 ≥0,15 17,0 to 19,0 0,60 8,0 to 10,0 0,10 Cu: 1,40 to 1,80

X12CrNiCuS18-9-3 4667-303-76-J AP27Q 0,15 1,00 3,00 0,20 ≥0,15 17,0 to 19,0 — 8,0 to 10,0 — Cu: 1,50 to 3,5

X5CrNiN19-9 4315-304-51-I AP28F 0,08 1,00 2,50 0,045 0,030 18,0 to 20,0 — 7,0 to 10,5 0,10 to 0,30 —

4560-304-

X3CrNiCu19-9-2 AP28D 0,035 1,00 1,50 to 2,00 0,045 0,015 18,0 to 19,0 — 8,0 to 9,0 0,10 Cu: 1,50 to 2,00

75-E

X6CrNiCu19-9-1 4649-304-76-J AP28I 0,08 1,00 2,00 0,045 0,030 18,0 to 20,0 — 8,0 to 10,5 — Cu: 0,70 to 1,30

4640-304- 0,030 to

X5CrNiCu19-6-2 AP28L 0,50 1,50 to 4,0 0,045 0,015 18,0 to 19,0 5,5 to 6,9 0,03 to 0,11 Cu: 1,30 to 2,00

76-E 0,08
b c

X5CrNi18-10 4301-304-00-I AP28E 0,07 1,00 2,00 0,045 0,030 17,5 to 19,5 — 8,0 to 10,5 0,10 —

b c

X6CrNiTi18-10 4541-321-00-I AP28G 0,08 1,00 2,00 0,045 0,030 17,0 to 19,0 — 9,0 to 12,0 — Ti: 5 × C to 0,70

b c

X7CrNiTi18-10 4940-321-09-I AP28O 0,04 to 0,10 1,00 2,00 0,045 0,030 17,0 to 19,0 — 9,0 to 12,0 — Ti: 5 × C to 0,80

Ti: 5 × C to 0,70

X6CrNiTiB18-10 4941-321-09-I AP28J 0,04 to 0,08 1,00 2,00 0,035 0,015 17,0 to 19,0 — 9,0 to 12,0 — B: 0,001 5 to

0,005 0
---------------------- Page: 7 ----------------------
ISO 15510:2014(E)
4 © ISO 2014 – All rights reserved
Table 1 (continued)
Steel designation % (mass fraction)
ISO name ISO number Line number C Si Mn P S Cr Mo Ni N Others
b c

X6CrNiNb18-10 4550-347-00-I AP28H 0,08 1,00 2,00 0,045 0,030 17,0 to 19,0 — 9,0 to 12,0 — Nb: 10 × C to 1,00

b c

X7CrNiNb18-10 4912-347-09-I AP28K 0,04 to 0,08 1,00 2,00 0,045 0,030 17,0 to 19,0 — 9,0 to 12,0 — Nb: 10 × C to 1,00

4650-304-

X2CrNiCu19-10 AP29A 0,030 1,00 2,00 0,045 0,015 18,5 to 20,0 — 9,0 to 10,0 0,08 Cu: 1,00

75-E
b c

X2CrNi19-11 4306-304-03-I AP30A 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 AP30I 0,08 1,00 2,00 0,045 0,030 17,0 to 19,0 — 10,5 to 13,0 0,10 —

X8CrNiNb16-13 4961-347-77-E AP29L 0,04 to 0,10 0,30 to 0,60 1,50 0,035 0,015 15,0 to 17,0 — 12,0 to 14,0 — Nb: 10 × C to 1,20

4818-304-

X6CrNiSiNCe19-10 AP29J 0,04 to 0,08 1,00 to 2,00 1,00 0,045 0,015 18,0 to 20,0 — 9,0 to 11,0 0,12 to 0,20 Ce: 0,03 to 0,08

15-E

X40CrNiWSi15-14-3-2 4867-316-77-J AP29P 0,35 to 0,45 1,50 to 2,50 0,60 0,040 0,030 14,0 to 16,0 — 13,0 to 15,0 — W: 2,00 to 3,00

4884-305-

X6CrNiSi18-13-4 AP31H 0,08 3,0 to 5,0 2,00 0,045 0,030 15,0 to 20,0 — 11,5 to 15,0 — —

00-X
4835-308-

X7CrNiSiNCe21-11 AP32N 0,05 to 0,10 1,40 to 2,00 0,80 0,040 0,030 20,0 to 22,0 — 10,0 to 12,0 0,14 to 0,20 Ce: 0,03 to 0,08

15-U

X15CrNiSi20-12 4828-305-09-I AP32R 0,20 1,50 to 2,50 2,00 0,045 0,030 19,0 to 21,0 — 11,0 to 13,0 0,10 —

4361-306-

X1CrNiSi18-15-4 AP33A 0,015 3,7 to 4,5 2,00 0,025 0,010 16,5 to 18,5 0,20 14,0 to 16,0 0,10 —

00-E

X8CrMnCuN17-8-3 4597-204-76-I AP25L 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 Cu: 2,00 to 3,5

X8CrMnNi19-6-3 4376-201-00-E AP28P 0,10 1,00 5,0 to 8,0 0,045 0,015 17,0 to 20,5 — 2,00 to 4,5 0,30 —

4615-201-

X3CrMnNiCu15-8-5-3 AP28C 0,030 1,00 7,0 to 9,0 0,040 0,010 14,0 to 16,0 0,80 4,5 to 6,0 0,02 to 0,06 Cu: 2,0 to 4,0

75-E
g b

X12CrMnNiN17-7-5 4372-201-00-I AP29O 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 AP29B 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

X6CrNiMnCu17-8-4-2 4617-201-76-J AP29I 0,08 1,70 3,0 to 5,0 0,045 0,030 15,0 to 18,0 — 6,0 to 9,0 — Cu: 1,00 to 3,0

X9CrMnNiCu17-8-5-2 4618-201-76-E AP30L 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 Cu: 1,00 to 2,50

X12CrMnNiN18-9-5 4373-202-00-I AP32O 0,15 1,00 7,5 to 10,0 0,060 0,030 17,0 to 19,0 — 4,0 to 6,0 0,15 to 0,30 —

X11CrNiMnN19-8-6 4369-202-91-I AP33L 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 —

X13CrMnNiN18-13-2 4020-241-00-X AP33M 0,15 1,00 11,0 to 14,0 0,045 0,030 16,5 to 19,0 — 0,5 to 2,5 0,20 to 0,45 —

4646-240-

X6CrMnNiCuN18-12-4 AP34H 0,02 to 0,10 1,00 10,5 to 12,5 0,050 0,015 17,0 to 19,0 0,50 3,5 to 4,5 0,20 to 0,30 Cu: 1,50 to 3,0

76-E
4378-240-

X6CrMnNiN18-13-3 AP34I 0,08 1,00 11,5 to 14,5 0,060 0,030 17,0 to 19,0 — 2,3 to 2,7 0,20 to 0,40 —

00-X
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ISO 15510:2014(E)
© ISO 2014 – All rights reserved 5
Table 1 (continued)
Steel designation % (mass fraction)
ISO name ISO number Line number C Si Mn P S Cr Mo Ni N Others
4890-202-

X53CrMnNiN21-9-4 AP34V 0,48 to 0,58 0,35 8,0 to 10,0 0,040 0,030 20,0 to 22,0 — 3,25 to 4,5 0,35 to 0,50 —

09-X

X20CrNiN22-11 4824-308-09-J AP33Q 0,15 to 0,25 1,00 1,00 to 1,60 0,040 0,030 20,5 to 22,5 — 10,0 to 12,0 0,15 to 0,30 —

4950-309-

X6CrNi23-13 AP36J 0,04 to 0,08 0,70 2,00 0,035 0,015 22,0 to 24,0 — 12,0 to 15,0 0,10 —

08-E

X18CrNi23-13 4833-309-08-I AP36R 0,20 1,00 2,00 0,045 0,030 22,0 to 24,0 — 12,0 to 15,0 0,10 —

X6CrNi25-20 4951-310-08-I AP45L 0,04 to 0,10 0,70 2,00 0,035 0,015 24,0 to 26,0 — 19,0 to 22,0 0,10 —

X1CrNi25-21 4335-310-02-I AP46A 0,020 0,25 2,00 0,025 0,010 24,0 to 26,0 0,20 20,0 to 22,0 0,10 —

4845-310-
X8CrNi25-21 AP46L 0,10 1,50 2,00 0,045 0,030 24,0 to 26,0 — 19,0 to 22,0 0,10 —
08-E
4845-310-
X23CrNi25-21 AP46O 0,25 1,50 2,00 0,040 0,030 24,0 to 26,0 — 19,0 to 22,0 — —
09-X
4841-314-

X15CrNiSi25-21 AP46R 0,20 1,50 to 2,50 2,00 0,045 0,015 24,0 to 26,0 — 19,0 to 22,0 0,10 —

00-E
b) Austenitic steels with Mo
V: 0,15 to 0,40
4982-215- 0,80 to

X10CrNiMoMnNbVB15-10-1 AM32P 0,06 to 0,15 0,20 to 1,00 5,50 to 7,0 0,035 0,015 14,0 to 16,0 9,0 to 11,0 0,10 Nb: 0,75 to 1,25

00-E 1,20
B: 0,003 to 0,009
0,50 to

X6CrNiCuSiMo19-10-3-2 4660-315-77-I AM30J 0,08 0,50 to 2,50 2,00 0,045 0,030 17,0 to 20,5 8,5 to 11,5 — Cu: 1,50 to 3,5

1,50
0,50 to

X6CrNiSiCuMo19-13-3-3-1 4648-315-77-I AM33I 0,08 2,50 to 4,0 2,00 0,045 0,030 17,0 to 20,5 11,0 to 14,0 — Cu: 1,50 to 3,5

1,50
b c
0,030 1,00 2,00 0,045 0,030 16,5 to 18,5 2,00 to 10,0 to 12,5 0,12 to 0,22 —
X2CrNiMoN17-11-2 4406-316-53-I AM30B
3,00
2,00 to

X3CrNiCuMo17-11-3-2 4578-316-76-E AM30F 0,04 1,00 2,00 0,045 0,015 16,5 to17,5 10,0 to 11,0 0,10 Cu: 3,0 to 3,5

2,50
2,00 to
b c

X2CrNiMo17-12-2 4404-316-03-I AM31A 0,030 1,00 2,00 0,045 0,030 16,5 to18,5 10,0 to 13,0 0,10 —

3,00
2,00 to
b c

X5CrNiMo17-12-2 4401-316-00-I AM31I 0,08 1,00 2,00 0,045 0,030 16,0 to 18,0 10,0 to 13,0 0,10 —

3,00
2,00 to
b c

X6CrNiMoTi17-12-2 4571-316-35-I AM31F 0,08 1,00 2,00 0,045 0,030 16,5 to 18,5 10,5 to 13,5 — Ti: 5 × C to 0,70

2,50
2,00 to

X6CrNiMoNb17-12-2 4580-316-40-I AM31G 0,08 1,00 2,00 0,045 0,030 16,5 to 18,5 10,5 to 13,5 — Nb: 10 × C to 1,00

2,50
1,20 to

X6CrNiMoCu18-12-2-2 4665-316-76-J AM32I 0,08 1,00 2,00 0,045 0,030 17,0 to 19,0 10,0 to 14,0 — Cu: 1,00 to 2,50

2,75
---------------------- Page: 9 ----------------------
ISO 15510:2014(E)
6 © ISO 2014 – All rights reserved
Table 1 (continued)
Steel designation % (mass fraction)
ISO name ISO number Line number C Si Mn P S Cr Mo Ni N Others
2,50 to
b c

X2CrNiMo17-12-3 4432-316-03-I AM32A 0,030 1,00 2,00 0,045 0,030 16,5 to18,5 10,5 to 13,0 0,10 —

3,00
2,50 to
b c

X3CrNiMo17-12-3 4436-316-00-I AM32F 0,05 1,00 2,00 0,045 0,030 16,5 to 18,5 10,5 to 13,0 0,10 —

3,00
2,50 to
b c

X2CrNiMoN17-12-3 4429-316-53-I AM32B 0,030 1,00 2,00 0,045 0,030 16,5 to 18,5 10,5 to 13,0 0,12 to 0,22 —

3,00
2,00 to

X6CrNiMoN17-12-3 4495-316-51-J AM32H 0,08 1,00 2,00 0,045 0,030 16,0 to 18,0 10,0 to 14,0 0,10 to 0,22 —

3,0
2,00 to

X6CrNiMoS17-12-3 4494-316-74-J AM32K 0,08 1,00 2,00 0,045 ≥0,10 16,0 to 18,0 10,0 to 14,0 — —

3,0
4449-316- 2,25 to

X3CrNiMo18-12-3 AM33F 0,035 1,00 2,00 0,045 0,015 17,0 to 18,2 11,5 to 12,5 0,08 Cu: 1,00

76-E 2,75
2,00 to B: 0,001 5 to

X3CrNiMoBN17-13-3 4910-316-77-E AM33G 0,04 0,75 2,00 0,035 0,015 16,0 to 18,0 12,0 to 14,0 0,10 to 0,18

3,0 0,005 0
1,20 to

X2CrNiMoCu18-14-2-2 4647-316-75-X AM34A 0,030 1,00 2,00 0,045 0,030 17,0 to 19,0 12,0 to 16,0 — Cu: 1,00 to 2,50

2,75
4435-316-

X2CrNiMo17-14-3 AM34C 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 — —

03-X
2,50 to

X2CrNiMo18-14-3 4435-316-91-I AM35A 0,030 1,00 2,00 0,045 0,030 17,0 to 19,0 12,5 to 15,0 0,10 —

3,00
1,8 to

X30CrCrNiMoPB20-11-2 4879-317-77-J AM33R 0,25 to 0,35 1,00 1,20 0,18 to 0,25 0,030 19,0 to 21,0 10,0 to 12,0 — B: 0,001 to 0,010

2,50
3,00 to
b c

X2CrNiMoN18-12-4 4434-317-53-I AM34B 0,030 1,00 2,00 0,045 0,030 17,5 to 20,0 11,0 to 14,0 0,10 to 0,20 —

4,0

X2CrNiMoN17-13-5 4439-317-26-E AM35B 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 0,12 to 0,22 —

4445-317-

X6CrNiMo19-13-4 AM36I 0,08 1,00 2,00 0,045 0,030 18,0 to 20,0 3,0 to 4,0 11,0 to 15,0 0,10 —

00-U

X2CrNiMo19-14-4 4438-317-03-I AM37A 0,030 1,00 2,00 0,045 0,030 17,5 to 20,0 3,0 to 4,0 12,0 to 15,0 0,10 —

X2CrNiMoN18-15-5 4483-317-26-I AM38A 0,030 1,00 2,00 0,045 0,030 17,0 to 20,0 4,0 to 5,0 13,5 to 17,5 0,10 to 0,20 —

X3CrNiMo18-16-5 4476-317-92-X AM39F 0,04 1,00 2,50 0,045 0,030 16,0 to 19,0 4,0 to 6,0 15,0 to 17,0 — —

0,50 to

X4CrNiMoN25-14-1 4496-309-51-J AM40F 0,06 1,50 2,00 0,045 0,030 23,0 to 26,0 12,0 to 16,0 0,25 to 0,40 —

1,20

X1CrNiMoCuN20-18-7 4547-312-54-I AM45A 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 0,18 to 0,25 Cu: 0,50 to 1,00

4466-310- 2,00 to

X1CrNiMoN25-22-2 AM49A 0,020 0,70 2,00 0,025 0,010 24,0 to 26,0 21,0 to 23,0 0,10 to 0,16 —

50-E 2,50
---------------------- Page: 10 ----------------------
ISO 15510:2014(E)
© ISO 2014 – All rights reserved 7
Table 1 (continued)
Steel designation % (mass fraction)
ISO name ISO number Line number C Si Mn P S Cr Mo Ni N Others
Cu: 1,00 to 2,00

X1CrNiMoCuNW24-22-6 4659-312-66-I AM52B 0,020 0,70 2,0 to 4,0 0,030 0,010 23,0 to 25,0 5,5 to 6,5 21,0 to 23,0 0,35 to 0,50

W: 1,50 to 2,50

X1CrNiMoCuN24-22-8 4652-326-54-I AM54A 0,020 0,50 2,0 to 4,0 0,030 0,005 23,0 to 25,0 7,0 to 8,0 21,0 to 23,0 0,45 to 0,55 Cu: 0,30 to 0,60

X2CrNiMnMoN25-18-6-5 4565-345-65-I AM54B 0,030 1,00 5,0 to 7,0 0,030 0,015 24,0 to 26,0 4,0 to 5,0 16,0 to 19,0 0,30 to 0,60 Nb: 0,15

c) Austenitic steels with Ni/Co as main alloying elements

X3NiCr18-16 4389-384-00-I AN34F 0,04 1,00 2,00 0,045 0,030 15,0 to 17,0 — 17,0 to 19,0 0,10 —

X1NiCrMoCu22-20-5-2 4656-089-04-I AN47A 0,020 1,00 2,00 0,040 0,030 19,0 to 21,0 4,0 to 5,0 21,0 to 23,0 0,10 Cu: 1,00 to 2,00

X1NiCrMoCu25-20-5 4539-089-04-I AN50A 0,020 0,75 2,00 0,035 0,015 19,0 to 22,0 4,0 to 5,0 23,5 to 26,0 0,15 Cu: 1,00 to 2,00

X1NiCrMoCuN25-20-7 4529-089-26-I AN52A 0,020 0,75 2,00 0,035 0,015 19,0 to 21,0 6,0 to 7,0 24,0 to 26,0 0,15 to 0,25 Cu: 0,50 to 1,50

4478-083-

X2NiCrMoN25-21-7 AN53A 0,030 1,00 2,00 0,040 0,030 20,0 to 22,0 6,0 to 7,0 23,5 to 25,5 0,18 to 0,25 Cu: 0,75

67-U

X1CrNiMoCuN25-25-5 4537-310-92-E AN55A 0,020 0,70 2,00 0,030 0,010 24,0 to 26,0 4,7 to 5,7 24,0 to 27,0 0,17 to 0,25 Cu: 1,00 to 2,00

Al: 0,20 to 0,50
Co: 0,50
Cu: 0,50
4958-088- Nb: 0,10

X5NiCrAlTi31-20 AN51J 0,03 to 0,08 0,70 1,50 0,015 0,010 19,0 to 22,0 — 30,0 to 32,5 0,030

77-E Ti: 0,20 to 0,50
Al+Ti: 0,70
Ni+Co:30,0 to
32,5
Al: 0,15 to 0,45
4558-088-

X2NiCrAlTi32-20 AN52B 0,030 0,70 1,00 0,020 0,015 20,0 to 23,0 — 32,0 to 35,0 — Ti: [8 × (C+N)] to

90-E
0,60
Al: 0,20 to 0,65
Co: 0,50
4959-088- Cu: 0,50

X8NiCrAlTi32-20 AN52L 0,05 to 0,10 0,70 1,50 0,015 0,010 19,0 to 22,0 — 30,0 to 34,0 0,030

77-E Ti: 0,20 to 0,65
Ni+Co:30,0 to
34,0
Al: 0,15 to 0,60

X8NiCrAlTi32-21 4876-088-00-I AN53L 0,10 1,00 1,50 0,015 0,015 19,0 to 23,0 — 30,0 to 34,0 — Ti:0,15 to 0,60

Cu: 0,70
Cu: 0,75
4959-088- Fe: ≥39,5

X7NiCrAlTi33-21 AN54L 0,05 to 0,10 1,00 1,50 0,045 0,015 19,0 to 23,0 — 30,0 to 35,0 —

10-U Ti: 0,15 to 0,60
Al: 0,15 to 0,60
---------------------- Page: 11 ----------------------
ISO 15510:2014(E)
8 © ISO 2014 – All rights reserved
Table 1 (continued)
Steel designation % (mass fraction)
ISO name ISO number Line number C Si Mn P S Cr Mo Ni N Others
Cu: 0,75
Fe: ≥39,5
4959-088-

X8NiCrAlTi33-21 AN54M 0,06 to 0,10 1,00 1,50 0,040 0,015 19,0 to 23,0 — 30,0 to 35,0 — Ti: 0,15 to 0,60

11-U
Al: 0,15 to 0,60
Al+Ti: 0,85 to 1,2
4864-083-
X13NiCr35-16 AN51O 0,15 1,50 2,00 0,040 0,030 14,0 to 17,0 — 33,0 to 37,0 — —
77-X
4657-080- 2,00 to Cu: 3,0 to 4,0
X4NiCrCuMo35-20-4-3 AN58F 0,07 1,00 2,00 0,045 0,035 19,0 to 21,0 32,0 to 38,0 —
20-U 3,00 Nb: (8 × C) to 1,00
4854-353-

X6NiCrSiNCe35-25 AN60J 0,04 to 0,08 1,20 to 2,00 2,00 0,040 0,015 24,0 to 26,0 — 34,0 to 36,0 0,12 to 0,20 Ce: 0,03 to 0,08

15-E

X1NiCrMoCu31-27-4 4563-080-28-I AN62A 0,020 0,70 2,00 0,030 0,010 26,0 to 28,0 3,0 to 4,0 30,0 to 32,0 0,10 Cu: 0,70 to 1,50

Co:18,5 to 21,0
X12CrNiCo- 2,50 to

4971-314-79-I AN64R 0,08 to 0,16 1,00 1,00 to 2,00 0,035 0,015 20,0 to 22,5 19,0 to 21,0 0,10 to 0,20 W: 2,00 to 3,0

MoWMnNNb21-20-20-3-3-2 3,5
Nb: 0,75 to 1,25
4479-089-

X1NiCrMoMnN34-27-6-5 AN72A 0,020 0,50 4,0 to 6,0 0,025 0,010 26,0 to 28,0 5,0 to 6,0 33,0 to 35,0 0,30 to 0,50 Cu: 0,50

36-U
d) Austenitic-ferritic (duplex) steels
4062-322-

X2CrNiN22-2 DP24A 0,030 1,00 2,00 0,040 0,010 21,5 to 24,0 0,45 1,00 to 2,90 0,16 to 0,28 —

02-U
4669-322-

X2CrCuNiN23-2-2 DP25A 0,045 1,00 1,00 to 3,00 0,040 0,030 21,5 to 24,0 0,50 1,00 to 3,00 0,12 to 0,20 Cu: 1,60 to 3,00

76-E
4162-321- 0,10 to

X2CrMnNiN21-5-1 DP27F 0,040 1,00 4,0 to 6,0 0,040 0,015 21,0 to 22,0 1,35 to 1,90 0,20 to 0,25 Cu: 0,10 to 0,80

01-E 0,80
0,10 to

X2CrNiN23-4 4362-323-04-I DP27B 0,030 1,00 2,00 0,035 0,015 22,0 to 24,5 3,5 to 5,5 0,05 to 0,20 Cu: 0,10 to 0,60

0,60
e) Austenitic-ferritic (duplex) steels with Mo
4482-320- 0,10 to

X2CrMnNiMoN21-5-3 DM29A 0,030 1,00 4,0 to 6,0 0,035 0,030 19,5 to 21,5 1,50 to 3,50 0,05 to 0,20 Cu: 1,00

01-X 0,60
2,50 to

X2CrNiMoSiMnN19-5-3-2-2 4424-315-00-I DM29B 0,030 1,40 to 2,00 1,20 to 2,00 0,035 0,030 18,0 to 19,0 4,3 to 5,2 0,05 to 0,10 —

3,0
2,50 to

X2CrNiMoN22-5-3 4462-318-03-I DM30A 0,030 1,00 2,00 0,035 0,015 21,0 to 23,0 4,5 to 6,5 0,10 to 0,22 —

3,5
4480-329- 1,00 to
X6CrNiMo26-4-2 DM32F 0,08 0,75 1,00 0,040 0,030 23,0 to 28,0 2,5 to 5,0 — —
00-U 2,00
4662-824- 1,00 to

X2CrNiMnMoCuN24-4-3-2 DM33A 0,030 0,70 2,50 to 4,0 0,035 0,005 23,0 to 25,0 3,0 to 4,5 0,20 to 0,30 Cu: 0,10 to 0,80

41-X 2,00
---------------------- Page: 12 ----------------------
ISO 15510:2014(E)
© ISO 2014 – All rights reserved 9
Table 1 (continued)
Steel designation % (mass fraction)
ISO name ISO number Line number C Si Mn P S Cr Mo Ni N Others
1,30 to

X3CrNiMoN27-5-2 4460-312-00-I DM34F 0,050 1,00 2,00 0,035 0,030 25,0 to 28,0 4,5 to 6,5 0,05 to 0,20 —

2,00

X2CrNiMoCuN25-6-3 4507-325-20-I DM34A 0,030 0,70 2,00 0,035 0,015 24,0 to 26,0 3,0 to 4,0 6,0 to 8,0 0,20 to 0,30 Cu: 1,00 to 2,50

X3CrNiMoCuN26-6-3-2 4507-325-50-X DM35F 0,04 1,00 1,50 0,040 0,030 24,0 to 27,0 2,9 to 3,9 4,5 to 6,5 0,10 to 0,25 Cu: 1,50 to 2,50

2,50 to

X2CrNiMoN25-7-3 4481-312-60-J DM35A 0,030 1,00 1,50 0,040 0,030 24,0 to 26,0 5,5 to 7,5 0,08 to 0,30 —

3,5

X2CrNiMoN25-7-4 4410-327-50-E DM36A 0,030 1,00 2,00 0,035 0,015 24,0 to 26,0 3,0 to 4,5 6,0 to 8,0 0,24 to 0,35 —

Cu: 0,50 to 1,00

X2CrNiMoCuWN25-7-4 4501-327-60-I DM36B 0,030 1,00 1,00 0,030 0,010 24,0 to 26,0 3,0 to 4,0 6,0 to 8,0 0,20 to 0,30

W: 0,50 to 1,00
4477-329- 1,50 to

X2CrNiMoN29-7-2 DM38A 0,030 0,80 0,80 to 1,50 0,030 0,030 28,0 to 30,0 5,8 to 7,5 0,30 to 0,40 Cu: 0,80

06-E 2,60
4658-327- Cu: 1,00

X2CrNiMoCoN28-8-5-1 DM42A 0,030 0,50 1,50 0,035 0,010 26,0 to 29,0 4,0 to 5,0 5,5 to 9,5 0,30 to 0,50

07-U Co: 0,50 to 2,00
4485-332-

X2CrNiMoN31-8-4 DM43A 0,030 0,80 1,50 0,035 0,010 29,0 to 33,0 3,0 to 5,0 6,0 to 9,0 0,40 to 0,60 Cu: 1,00

07-U
f) Ferritic steels
4030-410-
X2Cr12 FP12A 0,030 1,00 1,00 0,040 0,030 11,0 to 13,5 — — — —
90-X
4512-409-10- Ti: 6 × (C+N) to
mn b
X2CrTi12 FP12B 0,030 1,00 1,00 0,040 0,030 10,5 to 12,5 — 0,50 0,030
I 0,65

X2CrNi12 4003-410-77-I FP12C 0,030 1,00 2,00 0,040 0,015 10,5 to 12,5 — 0,30 to 1,10 0,030 —

4600-410-

X2CrMnNiTi12 FP12D 0,030 1,00 1,00 to 2,50 0,015 0,015 11,0 to 13,0 — 0,30 to 1,00 0,025 Ti: 6 × C to 0,35

70-E
X6CrN
...

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