prEN 10088-1

SLOVENSKI STANDARD
01-oktober-2026
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 inoxydables
Ta slovenski standard je istoveten z: prEN 10088-1
ICS:
77.140.20 Visokokakovostna jekla Stainless steels
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

DRAFT
EUROPEAN STANDARD
NORME EUROPÉENNE
EUROPÄISCHE NORM
October 2026
ICS 77.140.20 Will supersede EN 10088-1:2023
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 13.
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, Türkiye 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
© 2026 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 10088-1:2026 E
worldwide for CEN national Members.

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 Standards system .24
Annex B (informative) Matrix to show which steels are included in which European Standard .38
Annex C (informative) Classification of stainless steel grades .50
Annex D (informative) Empirical formulae for steel grade microstructure classification and
pitting resistance ranking .54
Annex E (informative) Guidance data on some physical properties .56
Annex F (informative) Chemical composition of nickel and cobalt alloys listed in EN 10095,
EN 10269 and EN 10302 .71
Bibliography .74

European foreword
This document (prEN 10088-1:2026) has been prepared by Technical Committee CEN/TC 459 “ECISS -
European Committee for Iron and Steel Standardization ”, the secretariat of which is held by AFNOR.
This document will supersede EN 10088-1:2023.
EN 10088-1:2023:
— change in composition of ferritic grade 1.4106 (part 3)
The EN 10088 series, 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.
Through its sub-committee SC 13 “Stainless steels”, (secretariat: SIS).
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 concerning ten steel grades, given in
Clause 4, Annex A, Annex B and Annex E and which is claimed to be relevant for the following clause(s)
of this document:
— Clause 4;
— Annex A;
— Annex B;
— Annex E.
CEN takes no position concerning the evidence, validity and scope of these patent rights. The holders of
these patents right have assured 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 1.4662, 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.
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 (see
Annex C) 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
EN 10357
EN 10378
Reference data on some physical properties are given in Annex E, Tables E.1 to E.8.
Empirical formulae for steel grade microstructure classification and pitting resistance ranking are given
in Annex D.
NOTE 1 A matrix that shows which steels are included in which standard is given in Annex B.
NOTE 2 General purposes include the use of stainless steels in contact with foodstuffs.
NOTE 3 Valve steels are specified in EN 10090.
NOTE 4 Steel castings are specified in various European Standards (see Bibliography).
NOTE 5 Tool steels are specified in EN ISO 4957.
NOTE 6 Welding consumables are specified in various European Standards (see Bibliography).
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, Definition of steel products
3 Terms and definitions
For the purposes of this document, the terms and definitions given in EN 10079 and the following apply.
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https://www.iso.org/obp
— IEC Electropedia: available at https://www.electropedia.org/
3.1
stainless steel
steel with at least 10,5 % of chromium and maximum 1,20 % of carbon
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.
[SOURCE: EN 10020:2000, 3.2.2]
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 Annex F, 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
Annex A).
NOTE 3 The order of the elements listed in the tables of chemical composition is according to ISO 6306.
Table 2 — Chemical composition (cast analysis) of austenitic corrosion resistant steels
a
Steel designation
% by mass
c
Name Number C Si Mn P S Cr Mo Ni N Others
Cu
Austenitic steels without minimum Mo content
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
b
X2CrNi18–9 1.4307 0,030 1,00 2,00 0,045 17,5 to 19,5 - 8,0 to 10,5 0,10 - -
0,015
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
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 -
X8CrNiS18–9 1.4305
1,40 to
e e
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 -
X6CrNiCuS18–9-2 1.4570
h
1,80
b
X3CrNiCu18–9-4 1.4567 0,04 1,00 2,00 0,045 17,0 to 19,0 - 8,5 to 10,5 0,10 3,00 to 4,0 -
0,015
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 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 -
0,08 0,11 2,00
b
X2CrNiN18–10 1.4311 0,030 1,00 2,00 0,045 17,5 to 19,5 - 8,5 to 11,5 0,12 to 0,22 - -
0,015
b
X5CrNi18–10 1.4301 0,07 1,00 2,00 0,045 17,5 to 19,5 - 8,0 to 10,5 0,10 - -
0,015
X2CrNiSi18–10 1.4682 0,03 0,80 to 2,0 2,00 0,045 0,015 17,5 to 19,5 0,40 to 0,80 9,0 to 11,0 0,10 - -
b d
X6CrNiTi18–10 1.4541 0,08 1,00 2,00 0,045 17,0 to 19,0 - - - Ti: 5 × C to 0,70
0,015 9,0 to 12,0
d
X6CrNiNb18–10 1.4550 0,08 1,00 2,00 0,045 0,015 17,0 to 19,0 - - - Nb: 10 × C to 1,00
9,0 to 12,0
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
b
X2CrNi19–11 1.4306 0,030 1,00 2,00 0,045 18,0 to 20,0 - 0,10 - -
0,015
d
a
Steel designation
% by mass
c
Name Number C Si Mn P S Cr Mo Ni N Others
Cu
b
X4CrNi18–12 1.4303 0,06 1,00 2,00 0,045 17,0 to 19,0 - 11,0 to 13,0 0,10 - -
0,015
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 -
f
X12CrMnNiN17–7-5 1.4372 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 - -
0,15
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
X6CrMnNiCuN18–12–4-2 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 -
* 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 to 21,5 0,75 5,5 to 7,5 0,15 to 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
1,30 to
e e
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 -
X2CrNiMoCuS17–10–2 1.4598
1,80
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 -
a
Steel designation
% by mass
c
Name Number C Si Mn P S Cr Mo Ni N Others
Cu
10,0 to 12,5
b
X2CrNiMoN17–11–2 1.4406 0,030 1,00 2,00 0,045 16,5 to 18,5 2,00 to 2,50 0,12 to 0,22 - -
0,015
d
10,0 to 13,0
b
X2CrNiMo17–12–2 1.4404 0,030 1,00 2,00 0,045 16,5 to 18,5 2,00 to 3,0 0,10 - -
0,015
d
b
X5CrNiMo17–12–2 1.4401 0,07 1,00 2,00 0,045 16,5 to 18,5 2,00 to 2,50 10,0 to 13,0 0,10 - -
0,015
10,5 to 13,5
b
X6CrNiMoTi17–12–2 1.4571 0,08 1,00 2,00 0,045 16,5 to 18,5 2,00 to 2,50 - - Ti: 5 × C to 0,70
0,015
d
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
1.4420
0,045
e
0,030 1,00 2,00 0,015 19,5 to 21,5 0,50 to 1,50 8,0 to 9,5 0,14 to 0,25 1,00 -
X2CrNiMoN21–9-1 *
e
g
*
b
X2CrNiMo17–12–3 1.4432 0,030 1,00 2,00 0,045 16,5 to 18,5 2,50 to 3,00 10,5 to 13,0 0,10 - -
0,015
10,5 to 13,0
b
X3CrNiMo17–12–3 1.4436 0,05 1,00 2,00 0,045 16,5 to 18,5 2,50 to 3,00 0,10 - -
0,015
d
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 -
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 - -
d
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 3,00 to 4,0 0,10 to 0,20 - -
d
b
X2CrNiMo18–14–3 1.4435 0,030 1,00 2,00 0,045 17,0 to 19,0 2,50 to 3,00 12,5 to 15,0 0,10 - -
0,015
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
b
X2CrNiMo18–15–4 1.4438 0,030 1,00 2,00 0,045 17,5 to 19,5 3,00 to 4,0 0,10 - -
0,015
d
X5CrNiMnMoNNbV22– Nb: 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 V: 0,10 to 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 - -
1,00 to
X1CrNiMoCuNW24–22–6 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
2,00
a
Steel designation
% by mass
c
Name Number C Si Mn P S Cr Mo Ni N Others
Cu
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
X2CrNiMnMoN25–18–6-5 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
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 3,00 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:
- mass fraction of 0,50 %: 1.4571;
- mass fraction of 1,00 %: 1.4306, 1.4406, 1.4429, 1.4434, 1.4436, 1.4438, 1.4541, 1.4550;
- mass fraction of 1,50 %: 1.4404.
e
Parts made of high sulfur free cutting austenitic steels might 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) 2014/68/EU the phosphorus content is restricted to max 0,035 %.
h
For cold heading and cold extruding, a Cu-content of max. 3,5 % can be agreed upon at the time of enquiry and order
* Patented steel grade.
Table 3 — Chemical composition (cast analysis) of austenitic-ferritic corrosion resistant steels
a
Steel designation
% by mass
Name Number C Si Mn P S Cr Mo Ni N Cu Others
Austenitic-ferritic steels without minimum Mo content
X2CrNiN22–2 * 1.4062 * 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 - -
X2CrCuNiN23–2-2 * 1.4669 * 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 1,60 to 3,00 -
X2CrMnNiSiN20–5-4–2 * 1.4670 * 0,030 1,50 to 3,00 4,0 to 6,0 0,040 0,010 18,0 to 21,0 0,60 3,00 to 5,5 0,10 to 0,20 1,00 -
Austenitic-ferritic steels with Mo
X2CrNiMoSi18–5-3 1.4424 0,030 1,40 to 2,00 1,20 to 2,00 0,035 0,015 18,0 to 19,0 2,50 to 3,00 4,5 to 5,2 0,05 to 0,10 - -
0,015 to
X2CrNiMnMoCuN21–3-1–1 * 1.4637 * 0,30 to 0,50 1,05 to 1,30 0,035 0,05 19,9 to 20,3 1,15 to 1,30 2,65 to 3,00 0,18 to 0,21 0,30 to 0,50 -
0,030
X2CrNiN23–4 1.4362 0,030 1,00 2,00 0,035 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 0,040 0,015 21,0 to 22,0 0,10 to 0,80 1,35 to 1,90 0,20 to 0,25 0,10 to 0,80 -
X2CrMnNiMoN21–5-3 1.4482 0,030 1,00 4,0 to 6,0 0,035 0,030 19,5 to 21,5 0,10 to 0,60 1,50 to 3,50 0,05 to 0,20 1,00 -
c c
0,030 1,00 2,00 0,035 0,015 21,0 to 23,0 2,50 to 3,5 4,5 to 6,5 0,10 to 0,22 - -
X2CrNiMoN22–5-3 1.4462
X2CrNiMnMoCuN24–4-3–2 * 1.4662 * 0,030 0,70 2,50 to 4,0 0,035 0,005 23,0 to 25,0 1,00 to 2,00 3,00 to 4,5 0,20 to 0,30 0,10 to 0,80 -
X2CrNiMoCuN25–6-3 1.4507 0,030 0,70 2,00 0,035 0,015 24,0 to 26,0 3,00 to 4,0 6,0 to 8,0 0,20 to 0,30 1,00 to 2,50 -
b
X3CrNiMoN27–5-2 1.4460 0,05 1,00 2,00 0,035 25,0 to 28,0 1,30 to 2,00 4,5 to 6,5 0,05 to 0,20 - -
0,015
X2CrNiMoN25–7-4 1.4410 0,030 1,00 2,00 0,035 0,015 24,0 to 26,0 3,00 to 4,5 6,0 to 8,0 0,24 to 0,35 - -
W: 0,50 to
X2CrNiMoCuWN25–7-4 1.4501 0,030 1,00 1,00 0,035 0,015 24,0 to 26,0 3,00 to 4,0 6,0 to 8,0 0,20 to 0,30 0,50 to 1,00
1,00
X2CrNiMoN29–7-2 1.4477 0,030 0,50 0,80 to 1,50 0,030 0,015 28,0 to 30,0 1,50 to 2,60 5,8 to 7,5 0,30 to 0,40 0,80 -
Co: 0,50 to
X2CrNiMoCoN28–8-5–1 1.4658 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 1,00
2,00
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 0,008 % to 0,030 %
is recommended and permitted. For polishability, a controlled sulfur content of 0,015 % max. is recommended.
c
Minimum value of the Pitting Resistance Equivalent (PRE = Cr + 3,3 Mo + 16 N) can be agreed upon at the time of enquiry and order.
* Patented steel grade.
Table 4 — Chemical composition (cast analysis) of ferritic corrosion resistant steels
a
Steel designation
% by mass
Name Number C Si Mn P S Cr Mo Ni N Nb Ti Others
Ferritic steels
0,15 to 11,0 to
X3CrS12 1.4045 0,060 2,00 1,50 0,040 1,00
0,35 13,0
10,5 to 0,30 to
b
X2CrNi12 1.4003 0,030 1,00 2,00 0,040 - 0,030 - - -
0,015
12,5 1,00
10,5 to
c
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
b
X6Cr13 1.4000 0,08 1,00 1,00 0,040 - - - - - -
0,015
14,0
12,0 to
b
X6CrAl13 1.4002 0,08 1,00 1,00 0,040 - - - - - Al: 0,10 to 0,30
0,015
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
[4 × (C + N) + 0,15] to
13,0 to Al: 1,50
X2CrSiTi15 1.4630 0,030 to 1,00 0,050 0,050 0,50 0,50 - 0,50
c
16,0 Cu: 0,50
0,80
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
b
X6Cr17 1.4016 0,08 1,00 1,00 0,040 -  - - - -
0,015
18,0
[4 × (C + N) + 0,15] to
16,0 to
X2CrTi17 1.4520 0,025 0,50 0,50 0,040 0,015 - - 0,015 - -
c
18,0
0,80
[4 × (C + N) + 0,15] to
16,0 to
b
X3CrTi17 1.4510 0,05 1,00 1,00 0,040 - - - - -
0,015
c
18,0
0,80
16,0 to
b
X3CrNb17 1.4511 0,05 1,00 1,00 0,040 - - - 12 × C to 1,00 - -
0,015
18,0
a
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)
X2CrNbZr17 1.4590 0,030 1,00 1,00 0,040 0,015 -  - 0,35 to 0,55 -
17,5 + 0,15
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 × C + 0,30] to
b
X2CrTiNb18 1.4509 0,030 1,00 1,00 0,040 -  - 0,10 to 0,60 -
0,015
18,5 1,00
0,20
[3 × C + 0,30] to
X2CrAlSiNb1 17,5 to Al: 0,20 to 1,50
1.4634 0,030 to 1,00 0,050 0,050 0,50 0,50 - -
c
8 18,5 Cu: 0,50
1,00
1,50
[4 × (C + N) + 0,15] to
18,5 to
X2CrNbTi20 1.4607 0,030 1,00 1,00 0,040 0,015 -  0,030 1,00 -
c
20,5
0,80
[4 × (C + N) + 0,20] to
19,0 to Cu: 0,50,
X2CrTi21 * 1.4611 * 0,030 1,00 1,00 0,050 0,050 0,50 0,50 - -
c
22,0 Al: 0,05
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
X2CrCuNbTiV 20,0 to
d
1.4622 * 0,030 1,00 0,80 0,040 0,015 - - 0.030 0,10 to 0,70 0,10 to 0,70
d
22–1 * 24,0
Cu: 0,30 to 0,80
[4 × (C + N) + 0,20] to
22,0 to Cu: 0,50,
X2CrTi24 * 1.4613 * 0,030 1,00 1,00 0,050 0,050 0,50 0,50 - -
c
25,0 Al: 0,05
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
b
X6CrMo17–1 1.4113 0,08 1,00 1,00 0,040 0,90 to 1,40 - - - - -
0,015
18,0
[4 × (C + N) + 0,15] to
X2CrMoTi17– 16,0 to
1.4513 0,025 1,00 1,00 0,040 0,015 0,80 to 1,40 - 0,020 - -
c
1 18,0
0,80
X6CrMoNb17 16,0 to [7 × (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
a
Steel designation
% by mass
Name Number C Si Mn P S Cr Mo Ni N Nb Ti Others
[4 × (C + N) + 0,15] to
X2CrMoTi18– 17,0 to
1.4521 0,025 1,00 1,00 0,040 0,015 1,75 to 2,50 - 0,030 - -
c
2 20,0
0,80
[4 × (C + N) + 0,15] to
X2CrMoTiS18 0,15 to 17,5 to
1.4523 0,030 1,00 0,50 0,040 2,00 to 2,50 - - - (C + N) : 0,040
c
–2 0,35 19,0
0,80
X2CrMoSiS18 0,25 to 17,0 to
1.4106 0,030 2,00 1,00 0,040 1,50 to 2,50 - - - - -
–2-1 0,35 19,0
X6CrMoS19– 0,15 to 17,5 to
1.4114 0,080 1,00 2,50 0,040 1,50 to 2,50 0,75 - - - -
2 0,35 19,5
[4 × (C + N) + 0,15] to
X2CrMoTi29– 28,0 to
1.4592 0,025 1,00 1,00 0,030 0,010 3,50 to 4,50 - 0,045 - -
c
4 30,0
0,80
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 0,008 % to 0,030 %
is recommended and permitted. For polishability, a controlled sulfur content of 0,015 % max. is recommended.
c
The stabilization may be made by use of Ti and/or Nb and/or Zr. According to the atomic mass of these elements and the content of Carbon and Nitrogen, the equivalence shall be the following:
Nb (% by mass) ≡ Zr (% by mass) ≡ 7/4 Ti (% by mass).
d
Ti + Nb: 8 × (C + N) to 0,80 %.
* Patented steel grade.
Table 5 — Chemical composition (cast analysis) of martensitic and precipitation hardening corrosion resistant steels
a
Steel designation
% by mass
c
Name Number Si Mn P S Cr Mo Ni Cu Others
C
Martensitic steels without minimum Mo content
0,08 to
b
X12Cr13 1.4006 1,00 1,50 0,040 11,5 to 13,5 - 0,75 - -
0,015
0,15
0,06 to
X12CrS13 1.4005 1,00 1,50 0,040 0,15 to 0,35 12,0 to 14,0 0,60 - - -
0,15
0,12 to
b
X15Cr13 1.4024 1,00 1,00 0,040 12,0 to 14,0 - - - -
0,015
0,17
0,16 to
b
X20Cr13 1.4021 1,00 1,50 0,040 12,0 to 14,0 - - - -
0,015
0,25
0,26 to
b
X30Cr13 1.4028 1,00 1,50 0,040 12,0 to 14,0 - - - -
0,015
0,36
0,25 to
X29CrS13 1.4029 1,00 1,50 0,040 0,15 to 0,25 12,0 to 13,5 0,60 - - -
0,32
0,36 to
b
X39Cr13 1.4031 1,00 1,00 0,040 12,5 to 14,5 - - - -
0,015
0,42
0,43 to
b
X46Cr13 1.4034 1,00 1,00 0,040 12,5 to 14,5 - - - -
0,015
0,50
0,43 to
X46CrS13 1.4035 1,00 2,00 0,040 0,15 to 0,35 12,5 to 14,0 - - - -
0,50
0,58 to
b e
X65Cr13 1.4037 1,00 1,00 0,040 12,5 to 14,5 - - -
0,015 N: see
0,70
N: 0,13 to 0,22
0,29 to
b
X34CrN16 1.4060 1,00 1,00 0,040 15,0 to 16,5 - - - (C + N) ≥ 0,45
0,015
0,38
(Cr + 16 × N - 5 × C) ≥ 16,2
0,12 to
b
X17CrNi16–2 1.4057 1,00 1,50 0,040 15,0 to 17,0 - 1,50 to 2,50 - -
0,015
0,22
a
Steel designation
% by mass
c
Name Number Si Mn P S Cr Mo Ni Cu Others
C
Martensitic steels with Mo
0,36 to
X38CrMo14 1.4419 1,00 1,00 0,040 0,015 13,0 to 14,5 0,60 to 1,00 - - -
0,42
0,48 to
b
X55CrMo14 1.4110 1,00 1,00 0,040 13,0 to 15,0 0,50 to 0,80 - - V: 0,15
0,015
0,60
X3CrNiMo13–4 1.4313 0,05 0,70 1,50 0,040 0,015 12,0 to 14,0 0,30 to 0,70 3,5 to 4,5 - N ≥ 0,020
X1CrNiMoCu12–5- 0,20 to
1.4422 0,020 0,50 2,00 0,040 0,003 11,0 to 13,0 1,30 to 1,80 4,0 to 5, 0 N: 0,020
2 0,80
V: 0,10 to 0,20
0,35 to
b
X50CrMoV15 1.4116 1,00 1,00 0,040 14,0 to 15,5 0,50 to 0,80 - -
0,015
e
0,55
N: see
0,60 to
b
X70CrMo15 1.4109 0,70 1,00 0,040 14,0 to 16,0 0,40 to 0,80 - - -
0,015
0,75
Ti: 0,010
X2CrNiMoV13–5-2 1.4415 0,030 0,50 0,50 0,040 0,015 11,5 to 13,5 1,50 to 2,50 4,5 to 6,5 -
V: 0,10 to 0,50
X1CrNiMoCu12–7- 0,20 to
1.4423 0,020 0,50 2,00 0,040 0,003 11,0 to 13,0 2,30 to 2,80 6,0 to 7, 0 N: 0,020
3 0,80
1,30
0,45 to V: 0,20 to 0,40
X53CrSiMoVN16–2 1.4150 to 0,80 0,030 0,010 15,0 to 16,5 0,20 to 0,40 0,40 -
0,60 N: 0,05 to 0,20
1,70
b
X4CrNiMo16–5-1 1.4418 0,06 0,70 1,50 0,040 15,0 to 17,0 0,80 to 1,50 4,0 to 6,0 - N ≥ 0,020
0,015
0,10 to
X14CrMoS17 1.4104 1,00 1,50 0,040 0,15 to 0,35 15,5 to 17,5 0,20 to 0,60 - - -
0,17
0,33 to
b
X39CrMo17–1 1.4122 1,00 1,50 0,040 15,5 to 17,5 0,80 to 1,30 1,00 - -
0,015
0,45
0,95 to
b
X105CrMo17 1.4125 1,00 1,00 0,040 16,0 to 18,0 0,40 to 0,80 - - -
0,015
1,20
0,35 to V: 1,50
X40CrMoVN16–2 1.4123 1,00 1,00 0,040 0,015 14,0 to 16,0 1,00 to 2,50 0,50 -
0,50 N: 0,10 to 0,30
0,85 to
b
X90CrMoV18 1.4112 1,00 1,00 0,040 17,0 to 19,0 0,90 to 1,30 - - V: 0,07 to 0,12
0,015
0,95
a
Steel designation
% by mass
c
Name Number Si Mn P S Cr Mo Ni Cu Others
C
Precipitation hardening steels without minimum Mo content
b
X5CrNiCuNb16–4 1.4542 0,07 0,70 1,50 0,040 15,0 to 17,0 0,60 3,00 to 5,0 3,00 to 5,0 Nb: 5 × C to 0,45
0,015
d
X7CrNiAl17–7 1.4568 0,09 0,70 1,00 0,040 0,015 16,0 to 18,0 - - Al: 0,70 to 1,50
6,5 to 7,8
Precipitation hardening steels with Mo
X5CrNiMoCuNb14 1,20 to
1.4594 0,07 0,70 1,00 0,040 0,015 13,0 to 15,0 1,20 to 2,00 5,0 to 6,0 Nb: 0,15 to 0,60
–5 2,00
Al: 0,60 to 0,80
X1CrNiMoAlTi12–
1.4530 0,015 0,10 0,10 0,010 0,005 11,5 to 12,5 1,85 to 2,15 8,5 to 9,5 - Ti: 0,28 to 0,37
9-2
N: 0,010
Al: 0,80 to 1,10
X1CrNiMoAlTi12–
1.4596 0,015 0,10 0,10 0,010 0,005 11,5 to 12,5 1,85 to 2,15 9,2 to 10,2 - Ti: 0,28 to 0,40
10–2
N: 0,020
Al: 1,35 to 1,75
X1CrNiMoAlTi12–
1.4612 0,015 0,10 0,10 0,010 0,005 11,0 to 12,5 1,75 to 2,25 10,2 to 11,3 - Ti: 0,20 to 0,50
11–2
N: 0,010
B: 0,001 0 to 0,010
X5NiCrTiMoVB25– 1,00 to Al: 0,35
1.4606 0,08 1,00 0,025 0,015 13,0 to 16,0 1,00 to 1,50 24,0 to 27,0 -
15–2 2,00 Ti: 1,90 to 2,30
V: 0,10 to 0,50
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 0,008 % to 0,030 % is recommended and permitted. For polishability, a controlled sulfur content of 0,015 % max. is recommended.
c
Tighter carbon ranges may be agreed at the time of enquiry and order.
d
For better cold deformability, the upper limit may be increased to 8,3 %.
e
For increased mechanical properties, nitrogen may be added up to 0,20 %.
Table 6 — Chemical composition (cast analysis) of austenitic and austenitic- ferritic heat-resistant steels
a
Steel designation
% by mass
Name Number C Si Mn P S Cr Ni N Others
X8CrNiTi18–10 1.4878 0,10 1,00 2,00 0,045 0,015 17,0 to 19,0 9,0 to 12,0 - Ti: 5 × C to 0,80
X6CrNiSiNCe19–10 1.4818 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
b b
X15CrNiSi25–4 1.4821 0,10 to 0,20 0,8 to 1,50 2,00 0,040 0,015 24,5 to 26,5 3,5 to 5,5 0,10 -
X15CrNiSi20–12 1.4828 0,20 1,50 to 2,50 2,00 0,045 0,015 19,0 to 21,0 11,0 to 13,0 0,10 -
X9CrNiSiNCe21–
1.4835 0,05 to 0,12 1,40 to 2,50 1,00 0,045 0,015 20,0 to 22,0 10,0 to 12,0 0,12 to 0,20 Ce: 0,03 to 0,08
11–2
X12CrNi23–13 1.4833 0,15 1,00 2,00 0,045 0,015 22,0 to 24,0 12,0 to 14,0 0,10 -
X25CrMnNiN25–9- 8,0 to
1.4872 0,20 to 0,30 1,00 0,045 0,015 24,0 to 26,0 6,0 to 8,0 0,20 to 0,40 -
7 10,0
X8CrNi25–21 1.4845 0,10 1,50 2,00 0,045 0,015 24,0 to 26,0 19,0 to 22,0 0,10 -
X15CrNiSi25–21 1.4841 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 -
X12NiCrSi35–16 1.4864 0,15 1,00 to 2,00 2,00 0,045 0,015 15,0 to 17,0 33,0 to 37,0 0,10 -
Al: 0,15 to 0,60
X10NiCrAlTi32–21 1.4876 0,12 1,00 2,00 0,030 0,015 19,0 to 23,0 30,0 to 34,0 -
Ti: 0,15 to 0,60
X10NiCrSi35–19 1.4886 0,15 1,00 to 2,00 2,00 0,030 0,015 17,0 to 20,0 33,0 to 37,0 0,10 -
X10NiCrSiNb35–22 1.4887 0,15 1,00 to 2,00 2,00 0,030 0,015 20,0 to 23,0 33,0 to 37,0 0,10 Nb: 1,00 to 1,50
Al: 0,025
X6NiCrNbCe32–27 1.4877 0,04 to 0,08 0,30 1,00 0,020 0,010 26,0 to 28,0 31,0 to 33,0 0,10 Ce: 0,05 to 0,10
Nb: 0,60 to 1,00
X6NiCrSiNCe35–25 1.4854 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
Elements not quoted (“-”) or not listed in the 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 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
Austenitic-ferritic grade.
Table 7 — Chemical composition (cast analysis) of ferritic heat-resistant steels
a
Steel designation
% by mass
Name Number C Si Mn P S Cr Al Others
X10CrAlSi7 1.4713 0,12 0,50 to 1,00 1,00 0,040 0,015 6,0 to 8,0 0,50 to 1,00 -
X10CrAlSi13 1.4724 0,12 0,70 to 1,40 1,00 0,040 0,015 12,0 to 14,0 0,70 to 1,20 -
X10CrAlSi18 1.4742 0,12 0,70 to 1,40 1,00 0,040 0,015 17,0 to 19,0 0,70 to 1,20 -
X3CrAlTi18–2 1.4736 0,04 1,00 1,00 0,040 0,015 17,0 to 18,0 1,70 to 2,10 Ti: [4 (C + N) +0,2] to 0,80
X10CrAlSi25 1.4762 0,12 0,70 to 1,40 1,00 0,040 0,015 23,0 to 26,0 1,20 to 1,70 -
X18CrN28 1.4749 0,15 to 0,20 1,00 1,00 0,040 0,015 26,0 to 29,0 - N: 0,15 to 0,25
Elements not quoted (“-”) or not listed in the 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 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.
Table 8 — Chemical composition (cast analysis) of austenitic creep-resistant steels
a
Steel designation
% by mass
Name Number C Si Mn P S Cr Mo Ni N Al Nb Ti V W Others
Austenitic creep resistant steels without minimum Mo content
17,0 to
0,04 to 8,0 to
X6CrNi18–10 1.4948 1,00 2,00 0,035 0,015 - 0,10 - - - - - -
0,08 11,0
19,0
17,0 to 9,0 to
0,04 to 10 × C to
X7CrNiNb18–10 1.4912 1,00 2,00 0,045 0,015 - - - - - - -
0,10 1,20
19,0 12,0
5 × (C+N
0,04 to 17,0 to 9,0 to
)
X7CrNiTi18–10 1.4940 1,00 2,00 0,040 0,015 - 0,10 - - - - -
0,08 19,0 13,0
to 0,80
17,0 to
0,04 to 9,0 to 5 × C to B: 0,001 5
X6CrNiTiB18–10 1.4941 1,00 2,00 0,035 0,015  - - - - -

0,08 19,0 12,0 0,80 to 0,005 0
15,0 to
0,04 to 0,30 to 12,0 to 10 × C to
X8CrNiNb16–13 1.4961 1,50 0,035 0,015 - - - - - - -
0,10 0,60 14,0 1,20
17,0
15,5 to
0,07 to 12,5 to 0,40 to 2,50 to B: 0,001 5
X12CrNiWTiB16–13 1.4962 0,50 1,50 0,035 0,015 - - - - -
0,15 14,5 0,70 3,00 to 0,006 0
17,5
a
Steel designation
% by mass
Name Number C Si Mn P S Cr Mo Ni N Al Nb Ti V W Others
15,5 to
0,04 to 0,30 to 15,5 to 0,06 to 10 × C to 2,50 to
X6CrNiWNbN16–16 1.4945 1,50 0,035 0,015 - - - - -
0,10 0,60 17,5 0,14 1,20 3,5
17,5
22,0 to
0,04 to 12,0 to
X6CrNi23–13 1.4950 0,70 2,00 0,035 0,015 - 0,10 - - - - - -
0,08 15,0
24,0
24,0 to
0,04 to 19,0 to
X6CrNi25–20 1.4951 0,70 2,00 0,035 0,015 - 0,10 - - - - - -
0,08 22,0
26,0
19,0 to
0,03 to 30,0 to 0,20 to 0,20 to Co: 0,50
X5NiCrAlTi31–20 1.4958 0,70 1,50 0,015 0,010 - 0,030 0,10 - -
0,08 32,5 0,50 0,50 Cu: 0,50
22,0
19,0 to
0,05 to 30,0 to 0,25 to 0,25 to Co: 0,50
X8NiCrAlTi32–21 1.4959 0,70 1,50 0,015 0,010 - 0,030 - - -
0,10 34,0 0,65 0,65 Cu: 0,50
22,0
Austenitic creep resistant steels with Mo
14,0 to
X10CrNiMoMnNbVB15– 0,07 to 5,5 to 0,80 to 9,0 to 0,75 to 0,15 to B:0,003 to
1.4982 1,00 0,040 0,030 0,10 - - -
10–1 0,13 7,0 1,20 11,0 1,25 0,40 0,009
16,0
0,04 to 0,30 to 15,5 to 1,10 to 12,5 to 0,06 to 10 × C to 0,60 to
X8CrNiMoVNb16–13 1.4988 1,50 0,035 0,015 - - - -
0,10 0,60 17,5 1,50 14,5 0,14 1,20 0,85
0,04 to 0,30 to 15,5 to 1,60 to 15,5 to 10 × C to
X8CrNiMoNb16–16 1.4981 1,50 0,035 0,015 - - - - - -
0,10 0,60 17,5 2,00 17,5 1,20
Nb + Ta:
0,04 to 0,30 to 15,5 to 1,60 to 15,5 to B: 0,05 to
X7CrNiMoBNb16–16 1.4986 1,50 0,045 0,030 - - 10 × C to - - -
0,10 0,60 17,5 2,00 17,5 0,10
1,20
16,5 to
0,04 to 2,00 to 10,0 to B: 0,001 5
X6CrNiMoB17–12–2 1.4919 1,00 2,00 0,035 0,015 0,10 - - - - -
0,08 2,50 13,0 to 0,005 0
18,5
0,04 to 16,0 to 2,00 to 12,0 to 5 × C to B: 0,0015
X6CrNiMoTiB17–13 1.4983 0,75 2,00 0,035 0,015 - - - - -
0,08 18,0 2,50 14,0 to 0,0060
0,80
0,04 to 16,0 to 2,00 to 12,0 to
X6CrNiMo17–13–2 1.4918 0,75 2,00 0,035 0,015 0,10 - - - - - -
0,08 18,0 2,50 14,0
16,0 to 2,00 to 12,0 to 0,10 to B: 0,001 5
X3CrNiMoBN17–13–3 1.4910 0,04 0,75 2,00 0,035 0,015 - - - - -
18,0 3,00 14,0 0,18 to 0,005 0
0,08 to 20,0 to 2,50 19,0 to 0,10 to 0,75 to 2,00 to Co: 18,5 to
X12CrCoNi21–20 1.4971 1,00 2,00 0,035 0,015 - - -
0,16 22,5 to 3,5 21,0 0,20 1,25 3,00 21,0
13,5 to
0,03 to 1,00 to 1,00 to 24,0 to 1,90 to 0,10 to B: 0,003 0
X6NiCrTiMoVB25–15–2 1.4980 1,00 0,025 0,015 - 0,35 - -
0,08 2,00 1,50 27,0 2,30 0,50 to 0,010
16,0
a
Steel designation
% by mass
Name Number C Si Mn P S Cr Mo Ni N Al Nb Ti V W Others
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.
Table 9 — Chemical composition (cast analysis) of martensitic creep-resistant steels
a
Steel designation
% by mass
Name Number C Si Mn P S Cr Mo Ni N Al Nb V W Others
0,08 to 0,30 to 0,85 to 0,030 to 0,060 to 0,18 to
X10CrMoVNb9–1 1.4903 0,50 0,025 0,015 8,0 to 9,5 0,40 0,040 - -
0,12 0,60 1,05 0,070 0,10 0,25
X11CrMoWVNb9–1- 0,09 to 0,10 to 0,30 to 0,90 to 0,10 to 0,050 to 0,060 to 0,18 to 0,90 to B: 0,000 5 to
1.4905 0,020 0,010 8,5 to 9,5 0,040
1 0,13 0,50 0,60 1,10 0,40 0,090 0,10 0,25 1,10 0,005 0
0,17 to 0,40 to 10,0 to 0,50 to 0,20 to 0,050 to 0,25 to 0,10 to
X19CrMoNbVN11–1 1.4913 0,50 0,025 0,015 0,020 - B: 0,0015
0,23 0,90 11,5 0,80 0,60 0,10 0,55 0,30
0,17 to 0,30 to 10,0 to 0,80 to 0,30 to 0,20 to
X20CrMoV11–1 1.4922 0,40 0,025 0,015 - - - - -
0,23 1,00 12,5 1,20 0,80 0,35
0,18 to 0,40 to 11,0 to 0,80 to 0,30 to 0,25 to
X22CrMoV12–1 1.4923 0,50 0,025 0,015 - - - - -
0,24 0,90 12,5 1,20 0,80 0,35
0,17 to 0,10 to 0,30 to 11,0 to 0,80 to 0,30 to 0,20 to 0,40 to
X20CrMoWV12–1 1.4935 0,025 0,015 - - - -
0,24 0,50 0,80 12,5 1,20 0,80 0,35 0,60
0,08 to 0,40 to 11,0 to 1,50 to 2,00 to 0,020 to 0,25 to
X12CrNiMoV12–3 1.4938 0,50 0,025 0,015 - - - -
0,15 0,90 12,5 2,00 3,00 0,040 0,40
0,05 to 0,10 to 0,30 to 0,50 to 0,20 to 0,20 to 0,10 to B:
...