Stainless steels - Part 1: List of stainless steels

This document lists the chemical composition of stainless steels, which are subdivided in accordance with their main properties into corrosion resistant steels, heat resistant steels and creep resistant steels and specified in the European Standards given in Table 1.
(...)
Reference data on some physical properties are given in Tables E.1 to E.8.
NOTE 1   A matrix that shows which steels are included in which standard is given in Annex B.
NOTE 2   Valve steels are specified in EN 10090.
NOTE 3   Steel castings are specified in various European Standards (see Bibliography).
NOTE 4   Tool steels are specified in EN ISO 4957.
NOTE 5   Welding consumables are specified in various European Standards (see Bibliography).

Nichtrostende Stähle - Teil 1: Verzeichnis der nichtrostenden Stähle

Dieses Dokument legt die chemische Zusammensetzung nichtrostender Stähle fest, die nach ihren wesentlichen Eigenschaften in korrosionsbeständige, hitzebeständige und warmfeste Stähle eingeteilt werden und in den in Tabelle 1 angegebenen Europäischen Normen näher bestimmt sind.
Tabelle 1 - Überblick über Werkstoffnormen für nichtrostende Stähle
...
Daten zu einigen physikalischen Eigenschaften werden in den Tabellen E.1 bis E.8 angegeben.
ANMERKUNG 1 Eine Matrix, die die Zuordnung der verschiedenen Stähle zu den Normen zeigt, ist in Anhang B angegeben.
ANMERKUNG 2 Ventilstähle sind in EN 10090 festgelegt.
ANMERKUNG 3 Stahlguss ist in verschiedenen Europäischen Normen festgelegt (siehe Literaturhinweise).
ANMERKUNG 4 Werkzeugstähle sind in EN ISO 4957 festgelegt.
ANMERKUNG 5 Schweißzusätze sind in verschiedenen Europäischen Normen festgelegt (siehe Literaturhinweise).

Aciers inoxydables - Partie 1: Liste des aciers inoxydables

Le présent document liste la composition chimique des aciers inoxydables qui sont subdivisés selon leurs principales propriétés en aciers résistant à la corrosion, en aciers réfractaires et en aciers résistant au fluage et spécifiés dans les normes européennes données dans le Tableau 1.
Tableau 1 - Vue d'ensemble des normes de matériaux pour les aciers inoxydables
...
Des données de référence sur quelques propriétés physiques sont données dans les Tableaux E.1 à E.8.
NOTE1  Une matrice qui montre quel acier est inclus dans quelle norme est donnée dans l’Annexe B.
NOTE 2  Les aciers pour soupapes sont spécifiés dans l’EN 10090.
NOTE 3  Les aciers moulés sont spécifiés dans des normes européennes variées (voir Bibliographie).
NOTE 4  Les aciers à outils sont couverts par l’EN ISO 4957.
NOTE 5  
Les produits pour soudure sont spécifiés dans des normes européennes variées (voir Bibliographie).

Nerjavna jekla - 1. del: Seznam nerjavnih jekel

General Information

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Current Stage
4060 - Closure of enquiry - Enquiry
Due Date
19-Feb-2022
Completion Date
19-Feb-2022

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SLOVENSKI STANDARD
oSIST prEN 10088-1:2022
01-januar-2022
Nerjavna jekla - 1. del: Seznam nerjavnih jekel
Stainless steels - Part 1: List of stainless steels
Nichtrostende Stähle - Teil 1: Verzeichnis der nichtrostenden Stähle
Aciers inoxydables - Partie 1: Liste des aciers inoxydable
Ta slovenski standard je istoveten z: prEN 10088-1
ICS:
77.140.20 Visokokakovostna jekla Stainless steels
oSIST prEN 10088-1:2022 en,fr,de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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oSIST prEN 10088-1:2022
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oSIST prEN 10088-1:2022
DRAFT
EUROPEAN STANDARD
prEN 10088-1
NORME EUROPÉENNE
EUROPÄISCHE NORM
November 2021
ICS 77.140.20 Will supersede EN 10088-1:2014
English Version
Stainless steels - Part 1: List of stainless steels

Aciers inoxydables - Partie 1: Liste des aciers Nichtrostende Stähle - Teil 1: Verzeichnis der

inoxydables nichtrostenden Stähle

This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee

CEN/TC 459/SC 5.

If this draft becomes a European Standard, 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.

This draft European Standard was established by CEN 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 CEN-CENELEC

Management Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,

Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,

Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and

United Kingdom.

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.

Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without

notice and shall not be referred to as a European Standard.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels

© 2021 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 10088-1:2021 E

worldwide for CEN national Members.
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oSIST prEN 10088-1:2022
prEN 10088-1:2021 (E)
Contents Page

European foreword ...................................................................................................................................................... 3

Introduction .................................................................................................................................................................... 4

1 Scope ......................................................................................................................................................................... 5

2 Normative references ......................................................................................................................................... 6

3 Terms and definitions ......................................................................................................................................... 6

4 Chemical composition ......................................................................................................................................... 6

Annex A (informative) Designation of ISO stainless steels and of comparable grades covered in

various designation systems listed according to the European system ..................................................26

Annex B (informative) Matrix to show which steels are included in which European Standard .34

Annex C (informative) Classification of stainless steel grades ..................................................................45

Annex D (informative) Empirical formulae for steel grade microstructure classification and

pitting resistance ranking ........................................................................................................................................49

Annex E (informative) Guidance data on some physical properties .......................................................51

Annex F (informative) Chemical composition of nickel and cobalt alloys listed in EN 10095,

EN 10269 and EN 10302 ...........................................................................................................................................66

Bibliography .................................................................................................................................................................69

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oSIST prEN 10088-1:2022
prEN 10088-1:2021 (E)
European foreword

This document (prEN 10088-1:2021) has been prepared by Technical Committee CEN/TC 459/SC5

“Steels for heat treatment, alloy steels, free-cutting and stainless steels, stainless steels”, the secretariat

of which is held by DIN.
This document is currently submitted to the CEN Enquiry.
This document will supersede EN 10088-1:2014.

In comparison with the previous edition, the following technical modifications have been made:

a) addition of austenitic grades 1.4420 (1,2), 1.4678 (2), 1.4681 (3), 1.4391 (3),1.4382 (2), 1.4682(2)

addition of austenitic-ferritic (duplex) grades 1.4637 (2), 1.4670 (3), addition of ferritic grades

1.4622 (2), 1.4106 (3), 1.4114 (3), 1.4045 (3), addition of martensitic grade 1.4060 (2), 1.4037 (3);

b) chemical composition was changed for following grades: austenitic grades 1.4310, 1.4404, 1.4529,

ferritic grade 1.4003, 1.4521, martensitic grades 1.4028, 1.4116;

c) the following grades were deleted: austenitic grades 1.4319, 1.4537, austenitic-ferritic (duplex)

grade 1.4655.

EN 10088, under the general title Stainless steels, consists of the following parts:

— Part 1: List of stainless steels;

— Part 2: Technical delivery conditions for sheet/plate and strip of corrosion resistant steels for general

purposes;

— Part 3: Technical delivery conditions for semi-finished products, bars, rods, wire, sections and bright

products of corrosion steels for general purposes;

— Part 4: Technical delivery conditions for sheet/plate and strip of corrosion steels for construction

purposes;

— Part 5: Technical delivery conditions for bars, rods, wire, sections and bright products of corrosion

steels for construction purposes.
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prEN 10088-1:2021 (E)
Introduction

The European Committee for Standardization (CEN) draws attention to the fact that it is claimed that

compliance with this document may involve the use of patents applied to ten steel grades.

CEN takes no position concerning the evidence, validity and scope of these patent rights.

The holders of these patent rights have ensured CEN that they are willing to negotiate licences, 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:
Grade 1.4658
Sandvik AB
SE-81181 Sandviken, Sweden
Grade 1.4662, 1.4637
Outokumpu Stainless AB
SE-77480 Avesta, Sweden
Grade 1.4420, 1.4622
Outokumpu Oyj
FI-00180, Helsinki, Salmisaarenranta 11, Finland
Grade 1.4062, 1.4669, 1.4670
Ugitech
F-73403 Ugine Cedex, France
Grade 1.4062, 1.4669
Industeel
F-71200 Creusot, 56 Rue Clemenceau, France
Grade 1.4646, 1.4611, 1.4613
Acciai Speciali Terni
I-05100 Terni, Italy

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

patent rights other than those identified above. CEN shall not be held responsible for identifying any or

all such patent rights.
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oSIST prEN 10088-1:2022
prEN 10088-1:2021 (E)
1 Scope

This document lists the chemical composition of stainless steels, which are subdivided in accordance

with their main properties into corrosion resistant steels, heat resistant steels and creep resistant steels

and specified in the European Standards given in Table 1.
Table 1 — Overview of material standards for stainless steels
Stainless steels
Corrosion resistant Creep resistant
Heat resistant steels
steels steels
EN 10028–7 EN 10028–7
EN 10088–2
EN 10088–3
EN 10088–4
EN 10088–5
EN 10095
EN 10151
EN 10216–5 EN 10216–5
EN 10217–7
EN 10222–5 EN 10222–5
EN 10250–4
EN 10263–5
EN 10264–4 EN 10264–4
EN 10269 EN 10269
EN ISO 6931-1
EN 10272
EN 10296–2
EN 10297–2
EN 10302
EN 10312
Reference data on some physical properties are given in Tables E.1 to E.8.

NOTE 1 A matrix that shows which steels are included in which standard is given in Annex B.

NOTE 2 Valve steels are specified in EN 10090.

NOTE 3 Steel castings are specified in various European Standards (see Bibliography).

NOTE 4 Tool steels are specified in EN ISO 4957.

NOTE 5 Welding consumables are specified in various European Standards (see Bibliography).

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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.

EN 10079:2007, Definition of steel products

ISO 6306, Chemical analysis of steel — Order of listing elements in steel standards

3 Terms and definitions

For the purposes of this document, the terms and definitions given in EN 10079:2007 and the following

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 http://www.iso.org/obp
3.1
stainless steels
steels with at least 10,5 % of chromium and maximum 1,20 % of carbon
[SOURCE: EN 10020:2000, 3.2.2]

Note 1 to entry: Stainless steels are further subdivided in accordance with their main property into corrosion

resistant steels, heat resistant steels and creep resistant steels.

Note 2 to entry: One type of steel in Table 7 and five types of steel in Table 9 contain less chromium than the

minimum defined for stainless steels, but are included in the heat-resistant and creep-resistant steels standards

respectively, because they form a part of these two families of steels.
4 Chemical composition
The chemical composition of stainless steels is given:
— in Table 2 for austenitic corrosion resistant steels;
— in Table 3 for austenitic-ferritic corrosion resistant steels;
— in Table 4 for ferritic corrosion resistant steels;

— in Table 5 for martensitic and precipitation hardening corrosion resistant steels;

— in Table 6 for austenitic and austenitic-ferritic heat resistant steels;
— in Table 7 for ferritic heat resistant steels;
— in Table 8 for austenitic creep resistant steels;
— in Table 9 for martensitic creep resistant steels.

NOTE 1 The chemical composition of nickel and cobalt alloys listed in EN 10095, EN 10269 and EN 10302 is

given in Tables F.1 and F.2.

NOTE 2 Steels in this document and in EN 10088-2 and EN 10088-3 are listed according to a line number (see

Table A.1) with the following rules.
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The primary rule is ordering by austenitic steels (without Mo), austenitic steels with Mo, austenitic 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 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 secondary rule is ordering by the line numbers as given in Table A.1.
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oSIST prEN 10088-1:2022

Table 2 — Chemical composition (cast analysis) of austenitic corrosion resistant steels

Steel designation
% by mass
Name Number C Si Mn P S Cr Mo Ni N Cu Others
Austenitic steels

X2CrNiN18–7 1.4318 0,030 1,00 2,00 0,045 0,015 16,5 to 18,5 - 6,0 to 8,0 0,10 to 0,20 - -

0,50 to

X4CrNiCu18-7 1.4382 0,05 1,00 2,00 0,045 0,015 17,0 to 19,0 - 6,0 to 8,0 0,05 to 0,15

2,00
0,030 to
X10CrNi18–8 1.4310 2,00 2,00 0,045 0,015 16,0 to 19,0 0,80 6,0 to 9,5 0,10 - -
0,15

X2CrNi18–9 1.4307 0,030 1,00 2,00 0,045 0,015 17,5 to 19,5 - 8,0 to 10,5 0,10 - -

0,030 to
X9CrNi18–9 1.4325 1,00 2,00 0,045 0,030 17,0 to 19,0 - 8,0 to 10,0 - - -
0,15
e e

X8CrNiS18–9 1.4305 0,10 1,00 2,00 0,045 0,15 to 0,35 17,0 to 19,0 - 8,0 to 10,0 0,10 1,00 -

1,40 to
e e

X6CrNiCuS18–9-2 1.4570 0,08 1,00 2,00 0,045 0,15 to 0,35 17,0 to 19,0 0,60 8,0 to 10,0 0,10 -

1,80

X3CrNiCu18–9-4 1.4567 0,04 1,00 2,00 0,045 0,015 17,0 to 19,0 - 8,5 to 10,5 0,10 3,0 to 4,0 -

X5CrNiN19–9 1.4315 0,06 1,00 2,00 0,045 0,015 18,0 to 20,0 - 8,0 to 11,0 0,12 to 0,22 - -

1,50 to 1,50 to
X3CrNiCu19–9-2 1.4560 0,035 1,00 0,045 0,015 18,0 to 19,0 - 8,0 to 9,0 0,10 -
2,00 2,00
0,030 to 1,30 to

X5CrNiCu19–6-2 1.4640 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 -

0,08 2,00

X2CrNiN18–10 1.4311 0,030 1,00 2,00 0,045 0,015 17,5 to 19,5 - 8,5 to 11,5 0,12 to 0,22 - -

X5CrNi18–10 1.4301 0,07 1,00 2,00 0,045 0,015 17,5 to 19,5 - 8,0 to 10,5 0,10 - -

X2CrNiSi18-10 1.4682 0,03 0,8 to 2,0 2,00 0,045 0,015 17,5 to 19,5 0,4 to 0,8 9,0 to 11,0 0,10

b d

X6CrNiTi18–10 1.4541 0,08 1,00 2,00 0,045 0,015 17,0 to 19,0 - 9,0 to 12,0 - - Ti: 5 × C to 0,70

X6CrNiNb18–10 1.4550 0,08 1,00 2,00 0,045 0,015 17,0 to 19,0 - 9,0 to 12,0 - - Nb: 10 × C to 1,00

X2CrNiCu19–10 1.4650 0,030 1,00 2,00 0,045 0,015 18,5 to 20,0 - 9,0 to 10,0 0,08 1,00 -

10,0 to 12,0
X2CrNi19–11 1.4306 0,030 1,00 2,00 0,045 0,015 18,0 to 20,0 - 0,10 - -
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prEN 10088-1:2021 (E)
Steel designation
% by mass
Name Number C Si Mn P S Cr Mo Ni N Cu Others

X4CrNi18–12 1.4303 0,06 1,00 2,00 0,045 0,015 17,0 to 19,0 - 11,0 to 13,0 0,10 - -

X1CrNiSi18–15–4 1.4361 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 - -

X8CrMnCuN17–8-3 1.4597 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 2,00 to 3,5 -

X8CrMnNi19–6-3 1.4376 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 - -

X3CrMnNiCu15–8-5–3 1.4615 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 2,0 to 4,0 -

X12CrMnNiN17–7-5 1.4372 0,15 1,00 5,5 to 7,5 0,045 0,015 16,0 to 18,0 - 3,5 to 5,5 0,05 to 0,25 - -

X2CrMnNiN17–7-5 1.4371 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 1,00 -

1,00 to

X9CrMnNiCu17–8-5–2 1.4618 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
0,20 to 14,0 to
X30MnCrN16-14 1.4678 1,00 0,045 0,015 12,0 to 16,0 - - 0,20 to 0,40 2,00 -
0,40 18,0

X12CrMnNiN18–9-5 1.4373 0,15 1,00 7,5 to 10,5 0,045 0,015 17,0 to 19,0 - 4,0 to 6,0 0,05 to 0,25 - -

0,05 to

X8CrMnNiN18–9-5 1.4374 0,30 to 0,60 9,0 to 10,0 0,035 0,030 17,5 to 18,5 0,50 5,0 to 6,0 0,25 to 0,32 0,40 -

0,10
0,07 to

X11CrNiMnN19–8-6 1.4369 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 - -

0,15
11,0 to

X13CrMnNiN18–13–2 1.4020 0,15 1,00 0,045 0,030 16,5 to 19,0 - 0,5 to 2,5 0,20 to 0,45 - -

14.0
11,5 to

X6CrMnNiN18–13–3 1.4378 0,08 1,00 0,060 0,030 17,0 to 19,0 - 2,3 to 3,7 0,20 to 0,40 - -

14,5
X6CrMnNiCuN18–12–
0,02 to 10,5 to 1,50 to
1.4646* 1,00 0,050 0,015 17,0 to 19,0 0,50 3,5 to 4,5 0,20 to 0,30 -
4-2* 0,10 12,5 3,00

X3CrMnNiN20-9-6 1.4391 0,040 1,00 8,0-10,0 0,045 0,030 19,0-21,5 0,75 5,5-7,5 0,15-0,40 - -

X1CrNi25–21 1.4335 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
X2CrNiMoCuS17–10–2 1,30 to

1.4598 0,030 1,00 2,00 0,045 0,10 to 0,20 16,5 to 18,5 2,00 to 2,50 10,0 to 13,0 0,10 -

1,80
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Steel designation
% by mass
Name Number C Si Mn P S Cr Mo Ni N Cu Others

X3CrNiCuMo17–11–3-2 1.4578 0,04 1,00 2,00 0,045 0,015 16,5 to 17,5 2,00 to 2,50 10,0 to 11,0 0,10 3,0 to 3,5 -

10,0 to 12,5

X2CrNiMoN17–11–2 1.4406 0,030 1,00 2,00 0,045 0,015 16,5 to 18,5 2,00 to 2,50 0,12 to 0,22 - -

10,0 to 13,0

X2CrNiMo17–12–2 1.4404 0,030 1,00 2,00 0,045 0,015 16,5 to 18,5 2,00 to 3,0 0,10 - -

X5CrNiMo17–12–2 1.4401 0,07 1,00 2,00 0,045 0,015 16,5 to 18,5 2,00 to 2,50 10,0 to 13,0 0,10 - -

10,5 to 13,5

X6CrNiMoTi17–12–2 1.4571 0,08 1,00 2,00 0,045 0,015 16,5 to 18,5 2,00 to 2,50 - - Ti : 5 × C to 0,70

X6CrNiMoNb17–12–2 1.4580 0,08 1,00 2,00 0,045 0,015 16,5 to 18,5 2,00 to 2,50 10,5 to 13,5 - - Nb : 10 × C to 1,00

e e

X2CrNiMoN21-9-1 1.4420 0,03 1,00 2,00 0,045 0,015 19,5 to 21,5 0,50 to 1,50 8,0 to 9,5 0,14 to 0,25 1,00 -

X2CrNiMo17–12–3 1.4432 0,030 1,00 2,00 0,045 0,015 16,5 to 18,5 2,50 to 3,00 10,5 to 13,0 0,10 - -

X3CrNiMo18–12–3 1.4449 0,035 1,00 2,00 0,045 0,015 17,0 to 18,2 2,25 to 2,75 11,5 to 12,5 0,08 1,00 -

X3CrNiMo17–13–3 1.4436 0,05 1,00 2,00 0,045 0,015 b 16,5 to 18,5 2,50 to 3,00 10,5 to 13,0 0,10 - -

11,0 to 14,0

X2CrNiMoN17–13–3 1.4429 0,030 1,00 2,00 0,045 0,015 16,5 to 18,5 2,50 to 3,00 0,12 to 0,22 - -

10,5 to 14,0

X2CrNiMoN18–12–4 1.4434 0,030 1,00 2,00 0,045 0,015 16,5 to 19,5 3,0 to 4,0 0,10 to 0,20 - -

X2CrNiMo18–14–3 1.4435 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 - -

X2CrNiMoN17–13–5 1.4439 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 - -

13,0 to 16,0

X2CrNiMo18–15–4 1.4438 0,030 1,00 2,00 0,045 0,015 17,5 to 19,5 3,0 to 4,0 0,10 - -

X5CrNiMnMoNNbV22- Nb : 0,10 to 0,30 V : 0,10 to

1.4681 0,060 1,00 4,0 to 6,0 0,045 0,030 20,5 to 23,5 1,5 to 3,0 11,5 to 13,5 0,20 to 0,40 -

12-5-2 0,30
0,50 to

X1CrNiMoCuN20–18–7 1.4547 0,020 0,70 1,00 0,030 0,010 19,5 to 20,5 6,0 to 7,0 17,5 to 18,5 0,18 to 0,25 -

1,00

X1CrNiMoN25–22–2 1.4466 0,020 0,70 2,00 0,025 0,010 24,0 to 26,0 2,00 to 2,50 21,0 to 23,0 0,10 to 0,16 - -

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Steel designation
% by mass
Name Number C Si Mn P S Cr Mo Ni N Cu Others
X1CrNiMoCuNW24– 1,00 to

1.4659 0,020 0,70 2,00 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

22–6 2,00
0,30 to

X1CrNiMoCuN24–22–8 1.4652 0,020 0,50 2,00 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 -

0,60
X2CrNiMnMoN25–18–

1.4565 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

6-5
Austenitic steels with Ni as main alloying element
1,20 to

X1NiCrMoCu25–20–5 1.4539 0,020 0,70 2,00 0,030 0,010 19,0 to 21,0 4,0 to 5,0 24,0 to 26,0 0,15 -

2,00
0,50 to

X1NiCrMoCuN25–20–7 1.4529 0,020 0,75 2,00 0,030 0,010 19,0 to 21,0 6,0 to 7,0 24,0 to 26,0 0,15 to 0,25 -

1,50
Al : 0,15 to 0,45

X2NiCrAlTi32–20 1.4558 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 0,60
0,70 to

X1NiCrMoCu31–27–4 1.4563 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 -

1,50

Elements not quoted (“-“) or 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 precautions shall be taken to avoid the

addition of such elements from scrap and other materials used in production which would impair mechanical properties and the suitability of the steel.

a Maximum values unless indicated otherwise.

b For bars, rods, wire, sections, bright products and the relevant semi-finished products, a maximum content of 0,030 % S applies. Particular ranges of sulfur content may provide improvement of particular properties.

For machinability a controlled sulfur content of 0,015 % to 0,030 % is recommended and permitted. For weldability, a controlled sulfur content of 0,0080 % to 0,030 % is recommended and permitted. For polishability, a

controlled sulfur content of 0,015 % max. is recommended.

c For austenitic steel grades intended for cold heading and cold extruding, a Cu-content of max. 1,00 % is permitted.

d Where for special reasons, e. g. hot workability for the fabrication of seamless tubes where it is necessary to minimize the delta ferrite content, or with the aim of low magnetic permeability, the maximum Ni content

may be increased by the following amounts:
- 0,50 % (m/m): 1.4571;
- 1,00 % (m/m): 1.4306, 1.4406, 1.4429, 1.4434, 1.4436, 1.4438, 1.4541, 1.4550;
- 1,50 % (m/m): 1.4404.

e Parts made of high sulfur free cutting austenitic steels may not comply with European Directive 94/27 regarding articles in contact with human skin.

f For pressure purposes a carbon limit of C ≤ 0,07 % is allowed.

g For application according to Pressure Equipment Directive (PED) the phosphorus content is restricted to max 0,035 %

* Patented steel grade.
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oSIST prEN 10088-1:2022
prEN 10088-1:2021 (E)

Table 3 — Chemical composition (cast analysis) of austenitic-ferritic corrosion resistant steels

Steel designation
% by mass
Name Number C Si Mn P S Cr Mo Ni N Cu Others
0,04 1,00 to
) )
X2CrNiN22-2* 1.4062* 0,030 1,00 2,00 0,010 21,5 to 24,0 0,45 0,16 to 0,28 - -
0 2,90
1,00 to 0,04 1,00 to
) )

X2CrCuNiN23–2-2* 1.4669* 0,045 1,00 0,030 21,5 to 24,0 0,50 0,12 to 0,20 1,60 to 3,00 -

3,00 0 3,00
1,50 to 0,04
e e

X2CrMnNiSiN20-5-4-2 1.4670 0,030 4,0 to 6,0 0,010 18,0 to 21,0 0,60 3,00 to 5,5 0,10 to 0,20 1,00 -

3,00 0
Austenitic-ferritic steels with Mo
1,40 to 1,20 to 0,03

X2CrNiMoSi18–5-3 1.4424 0,030 0,015 18,0 to 19,0 2,50 to 3,0 4,5 to 5,2 0,05 to 0,10 - -

2,00 2,00 5
0,015 to 0,30 to 1,05 to 0,03 2,65 to

X2CrNiMnMoCuN21-3-1-1 1.4637 0,05 19,9 to 20,3 1,15 to 1,30 0,18 to 0,21 0,30 to 0,50 -

0,030 0,50 1,30 5 3,00
0,03

X2CrNiN23–4 1.4362 0,030 1,00 2,00 0,015 22,0 to 24,5 0,10 to 0,60 3,5 to 5,5 0,05 to 0,20 0,10 to 0,60 -

X2CrMnNiN21–5-1 1.4162 0,04 1,00 4,0 to 6,0 0,04 0,015 21,0 to 22,0 0,10 to 0,80 1,35 to 0,20 to 0,25 0,10 to 0,80

0 1,90
0,03 1,50 to

X2CrMnNiMoN21–5-3 1.4482 0,030 1,00 4,0 to 6,0 0,030 19,5 to 21,5 0,10 to 0,60 0,05 to 0,20 1,00 -

5 3,50
0,03
c c

X2CrNiMoN22–5-3 1.4462 0,030 1,00 2,00 0,015 21,0 to 23,0 2,50 to 3,5 4,5 to 6,5 0,10 to 0,22 - -

0,03

X2CrNiMnMoCuN24–4-3–2* 1.4662* 0,030 0,70 2,50 to 4,0 0,005 23,0 to 25,0 1,00 to 2,00 3,0 to 4,5 0,20 to 0,30 0,10 to 0,80 -

0,03

X2CrNiMoCuN25–6-3 1.4507 0,030 0,70 2,00 0,015 24,0 to 26,0 3,0 to 4,0 6,0 to 8,0 0,20 to 0,30 1,00 to 2,50 -

0,03 0,015

X3CrNiMoN27–5-2 1.4460 0,05 1,00 2,00 25,0 to 28,0 1,30 to 2,00 4,5 to 6,5 0,05 to 0,20 - -

0,03

X2CrNiMoN25–7-4 1.4410 0,030 1,00 2,00 0,015 24,0 to 26,0 3,0 to 4,5 6,0 to 8,0 0,24 to 0,35 - -

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oSIST prEN 10088-1:2022
prEN 10088-1:2021 (E)
0,03 W : 0,50 to

X2CrNiMoCuWN25–7-4 1.4501 0,030 1,00 1,00 0,015 24,0 to 26,0 3,0 to 4,0 6,0 to 8,0 0,20 to 0,30 0,50 to 1,00

5 1,00
0,80 to 0,03

X2CrNiMoN29–7-2 1.4477 0,030 0,50 0,015 28,0 to 30,0 1,50 to 2,60 5,8 to 7,5 0,30 to 0,40 0,80 -

1,50 0
0,03 Co : 0,50 to

X2CrNiMoCoN28–8-5–1* 1.4658* 0,030 0,50 1,50 0,010 26,0 to 29,0 4,0 to 5,0 5,5 to 9,5 0,30 to 0,50 1,00

5 2,00

Elements not quoted in this table shall not be intentionally added to the steel without the agreement of the purchaser except for finishing the cast. All appropriate precautions shall be taken to avoid the addition

of such elements from scrap and other materials used in production which would impair mechanical properties and the suitability of the steel.

a Maximum values unless indicated otherwise.

b For bars, rods, wire, sections, bright products and the relevant semi-finished products, a maximum content of 0,030 % S applies. Particular ranges of sulfur content may provide improvement of particular

properties. For machinability a controlled sulfur content of 0,015 % to 0,030 % is recommended and permitted. For weldability, a controlled sulfur content of 0,008 % to 0,030 % is recommended and

permitted. For polishability, a controlled sulfur content of 0,015 % max. is recommended.

c By agreement, this grade can be delivered with a Pitting Resistance Equivalent Number (PRE = Cr + 3,3 Mo + 16 N, compare Table D.1) greater than 34.

* Patented steel grade.
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oSIST prEN 10088-1:2022
prEN 10088-1:2021 (E)

Table 4 — Chemical composition (cast analysis) of ferritic corrosion resistant steels

Steel designation
% by mass
Name Number C Si Mn P S Cr Mo Ni N Nb Ti Others
X3CrS12 1.4045 0,060 2,00 1,50 0,040 0.15- 11.0-13.0 1.00
0.35
10,5 to 0,30 to
X2CrNi12 1.4003 0,030 1,00 2,00 0,040 0,015 - 0,030 - - -
12,5 1,00
10,5 to
X2CrTi12 1.4512 0,030 1,00 1,00 0,040 0,015 - - - - [6 × (C + N)] to 0,65 -
12,5
10,5 to 0,50 to
X6CrNiTi12 1.4516 0,08 0,70 1,50 0,040 0,015 - - - 0,05 to 0,35 -
12,5 1,50
12,0 to
X6Cr13 1.4000 0,08 1,00 1,00 0,040 0,015 - - - - - -
14,0
12,0 to
X6CrAl13 1.4002 0,08 1,00 1,00 0,040 0,015 - - - - - Al : 0,10 to 0,30
14,0
X2CrMnNiTi1 1,00 to 11,0 to 0,30 to
1.4600 0,030 1,00 0,040 0,015 - 0,025 - 6 × C to 0,35 -
2 2,50 13,0 1,00
0,20
13,0 to [4 × (C + N) + 0,15] to Al : 1,50
X2CrSiTi15 1.4630 0,030 to 1,00 0,050 0,050 0,50 0,50 - 0,50
16,0 0,80 Cu : 0,50
1,50
14,0 to
X1CrNb15 1.4595 0,020 1,00 1,00 0,025 0,015 - - 0,020 0,20 to 0,60 - -
16,0
16,0 to
X6Cr17 1.4016 0,08 1,00 1,00 0,040 0,015 - - - - -
18,0
16,0 to [4 × (C + N) + 0,15] to
X2CrTi17 1.4520 0,025 0,50 0,50 0,040 0,015 - - 0,015 - -
18,0 0,80
16,0 to [4 × (C + N) + 0,15] to
X3CrTi17 1.4510 0,05 1,00 1,00 0,040 0,015 - - - - -
18,0 0,80
16,0 to
X3CrNb17 1.4511 0,05 1,00 1,00 0,040 0,015 - - - 12 x C to 1,00 - -
18,0
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oSIST prEN 10088-1:2022
prEN 10088-1:2021 (E)
Steel designation
% by mass
Name Number C Si Mn P S Cr Mo Ni N Nb Ti Others
16,0 to Zr ≥ 7× (C + N)+0,
X2CrNbZr17 1.4590 0,030 1,00 1,00 0,040 0,015 - - 0,35 to 0,55 -
17,5 15
16,0 to 1,20 to
X6CrNi17–1 1.4017 0,08 1,00 1,00 0,040 0,015 - - - - -
18,0 1,60
17,5 to [3 x C + 0,30] to
X2CrTiNb18 1.4509 0,030 1,00 1,00 0,040 0,015 - - 0,10 to 0,60 -
18,5 1,00
0,20
X2CrAlSiNb1 17,5 to [3 x C + 0,30] to Al : 0,20 to 1,50
1.4634 0,030 to 1,00 0,050 0,050 0,50 0,50 - -
8 18,5 1,00 Cu: 0,50
1,50
18,5 to [4 × (C + N) + 0.15] to
X2CrNbTi20 1.4607 0,030 1,00 1,00 0,040 0,015 – 0,030 1,00 -
20,5 0,80
19,0 to [4 × (C + N) + 0.20] to
X2CrTi21* 1.4611* 0,030 1,00 1,00 0,050 0,050 0,50 0,50 - - Cu : 0,50, Al: 0,05
22,0 1.00
20,0 to

X2CrNbCu21 1.4621 0,030 1,00 1,00 0,040 0,015 - - 0,030 0,20 to 1,00 - Cu : 0,10 to 1,00

21,5
V : 0,03 to 0,50
X2CrCuNbTiV2 20,0 to
1.4622 * 0,030 1,00 0,80 0,040 0,015 - - 0.030 0,10 to 0,70 0,10 to 0,70
2-1 *
24,0
Cu : 0,30 to 0,80
22,0 to [4 × (C + N) + 0.20] to
X2CrTi24* 1.4613* 0,030 1,00 1,00 0,050 0,050 0,50 0,50 - - Cu : 0,50, Al:0,05
25,0 1.00
Ferritic steels with Mo
X5CrNiMoTi1 13,5 to 1,00 to
1.4589 0,08 1,00 1,00 0,040 0,015 0,20 to 1,20 - - 0,30 to 0,50 -
5–2 15,5 2,50
0,15 to 16,0 to
X6CrMoS17 1.4105 0,08 1,50 1,50 0,040 0,20 to 0,60 - - - - -
0,35 18,0
16,0 to
X6CrMo17–1 1.4113 0,08 1,00 1,00 0,040 0,015 0,90 to 1,40 - - - - -
18,0
X2CrMoTi17– 16,0 to [4 × (C + N) + 0,15] to
1.4513 0,025 1,00 1,00 0,040 0,015 0,80 to 1,40 - 0,020 - -
1 18,0 0,80
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oSIST prEN 10088-1:2022
prEN 10088-1:2021 (E)
Steel designation
% by mass
Name Number C Si Mn P S Cr Mo Ni N Nb Ti Others
X6CrMoNb17 16,0 to [7x(C+N)+0,10] to
1.4526 0,08 1,00 1,00 0,040 0,015 0,80 to 1,40 - 0,040 - -
–1 18,0 1,00
X2CrMoTi18– 17,0 to [4 × (C + N) + 0,15] to
1.4521 0,025 1,00 1,00 0,040 0,015 1,75 to 2,50 - 0,030 - -
2 20,0 0,80
X2CrMoTiS18 0,15 to 17,5 to [4 × (C + N) + 0,15] to
1.4523 0,030 1,00 0,50 0,040 2,00 to 2,50 - - - (C + N) ≤ 0,040
–2 0,35 19,0 0,80
X2CrMoSiS18 0,15 to 17,5 to
1.4106 0,030 2,50 1,00 0,040 1,50 to 2,50 0,75 - - - -
-2-1 0,35 19,5
0,15 to 17,5 to
X6CrMoS19-2 1.4114 0,080 1,00 2,50 0,040 1,50 to 2,50 0,75 - - - -
0,35 19,5
X2CrMoTi29– 28,0 to [4 × (C + N) + 0,15] to
1.4592 0,025 1,00 1,00 0,030 0,010 3,50 to 4,50 - 0,045 - -
4 30,0 0,80

Elements not quoted in this table shall not be intentionally added to the steel without the agreement of the purchaser except for finishing the cast. All appropri

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