EN 10088-1:2023

SLOVENSKI STANDARD
01-februar-2024
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: EN 10088-1:2023
ICS:
77.140.20 Visokokakovostna jekla Stainless steels
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN 10088-1
EUROPEAN STANDARD
NORME EUROPÉENNE
December 2023
EUROPÄISCHE NORM
ICS 77.140.20 Supersedes 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 European Standard was approved by CEN on 6 November 2023.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this
European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references
concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN
member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by
translation under the responsibility of a CEN member into its own language and notified to the 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.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2023 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 10088-1:2023 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 system .22
Annex B (informative) Matrix to show which steels are included in which European Standard .30
Annex C (informative) Classification of stainless steel grades .42
C.1 General .42
C.2 Classification by use properties .42
C.3 Classification by microstructure .43
C.4 Classification by significant alloying elements .45
Annex D (informative) Empirical formulae for steel grade microstructure classification and pitting
resistance ranking .46
Annex E (informative) Guidance data on some physical properties .48
Annex F (informative) Chemical composition of nickel and cobalt alloys listed in EN 10095,
EN 10269 and EN 10302 .63
Bibliography .66
European foreword
This document (EN 10088-1:2023) 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 European Standard shall be given the status of a national standard, either by publication of an
identical text or by endorsement, at the latest by June 2024, and conflicting national standards shall be
withdrawn at the latest by June 2024.
This document supersedes EN 10088-1:2014.
In comparison with the previous edition, the following technical modifications have been made:
a) addition of austenitic grades 1.4420 (also part 2), 1.4678 (2), 1.4681 (3), 1.4391 (3), 1.4382 (2),
1.4682 (2), austenitic-ferritic (duplex) grades 1.4637 (2), 1.4670 (3), ferritic grades 1.4622 (2),
1.4106 (3), 1.4114 (3), 1.4045 (3), martensitic grade 1.4060 (2), 1.4037 (3);
b) change in chemical composition: austenitic grades 1.4310 (2, 3), 1.4404 (2, 3), 1.4529 (2, 3), ferritic
grade 1.4003 (2, 3), 1.4521(2), martensitic grades 1.4028 (2, 3), 1.4116 (2, 3);
c) removal: austenitic grades 1.4319 (2, 3), 1.4537 (2, 3), austenitic-ferritic (duplex) grade 1.4655 (2).
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.
Any feedback and questions on this document should be directed to the users’ national standards body.
A complete listing of these bodies can be found on the CEN website.
According to the CEN-CENELEC Internal Regulations, the national standards organisations of the
following countries are bound to implement this European Standard: 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 the United
Kingdom.
Through its sub-committee SC 5 “Steels for heat treatment, alloy steels, free-cutting steels and stainless steels”,
(secretariat: DIN).
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:
Clauses: Clause 4, Annex A, Annex B and 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
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 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).
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 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 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
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
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
1,80
b
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 3,00 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
...