Open die steel forgings for general engineering purposes - Part 4: Stainless steels

This Part of this European Standard specifies the technical delivery requirements for open die forgings, forged bars and products pre-forged and finished in ring rolling mills, manufactured from stainless steels with ferritic, martensitic, austenitic and austenitic-ferritic structures. Note: The majority of steels listed in this Part of EN 10250 are identical to steels specified EN 10088-3 and more extensive information on properties is given in that European Standard. General information on technical delivery conditions is given in EN 10021.

Freiformschmiedestücke aus Stahl für allgemeine Verwendung - Teil 4:Nichtrostende Stähle

Dieser Teil dieser Europäischen Norm legt die technischen Lieferbedingungen für Freiformschmiedestücke, geschmiedete Stäbe sowie vorgeschmiedete und in Ringwalzwerken fertigumgeformte Erzeugnisse fest, die aus nichtrostenden Stählen mit ferritischem, martensitischem, austenitischem oder austenitisch-ferritischem Gefüge gefertigt werden.
ANMERKUNG   Die meisten Stähle, die in diesem Teil der EN 10250 aufgeführt sind, sind mit Stählen identisch, die in EN 10088-3 und EN 10088-7 festgelegt sind. Umfassende Angaben über deren Eigenschaften werden in jenen Europäischen Normen gemacht.
Allgemeine Angaben über die technischen Lieferbedingungen enthält EN 10021.

Pièces forgées en acier pour usage général - Partie 4: Aciers inoxydables

Le présent document spécifie les conditions techniques de livraison des pièces obtenues par forgeage libre, des barres forgées et des produits préforgés et finis par laminage circulaire, fabriqués en aciers inoxydables à structure ferritique, martensitique, austénitique et austéno-ferritique.
NOTE La majorité des aciers énumérés dans la présente partie de l'EN 10250 sont identiques à ceux spécifiés dans l'EN 10088-3 et l’EN 10028-7, et des informations plus complètes quant aux caractéristiques de ces aciers sont fournies dans ces Normes européennes.
Les informations générales sur les conditions techniques de livraison sont données dans l'EN 10021.

Prosto kovani jekleni izkovki za splošno tehnično uporabo - 4. del: Nerjavna jekla

General Information

Status
Published
Public Enquiry End Date
30-Nov-2018
Publication Date
01-Jun-2021
Technical Committee
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
27-May-2021
Due Date
01-Aug-2021
Completion Date
02-Jun-2021

RELATIONS

Buy Standard

Standard
SIST EN 10250-4:2021
English language
22 pages
sale 10% off
Preview
sale 10% off
Preview

e-Library read for
1 day
Draft
oSIST prEN 10250-4:2018
English language
19 pages
sale 10% off
Preview
sale 10% off
Preview

e-Library read for
1 day

Standards Content (sample)

SLOVENSKI STANDARD
SIST EN 10250-4:2021
01-julij-2021
Nadomešča:
SIST EN 10250-4:2000

Prosto kovani jekleni izkovki za splošno tehnično uporabo - 4. del: Nerjavna jekla

Open die steel forgings for general engineering purposes - Part 4: Stainless steels

Freiformschmiedestücke aus Stahl für allgemeine Verwendung - Teil 4:Nichtrostende

Stähle
Pièces forgées en acier pour usage général - Partie 4: Aciers inoxydables
Ta slovenski standard je istoveten z: EN 10250-4:2021
ICS:
77.140.20 Visokokakovostna jekla Stainless steels
77.140.85 Železni in jekleni kovani Iron and steel forgings
izdelki
SIST EN 10250-4:2021 en,fr,de

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

---------------------- Page: 1 ----------------------
SIST EN 10250-4:2021
---------------------- Page: 2 ----------------------
SIST EN 10250-4:2021
EN 10250-4
EUROPEAN STANDARD
NORME EUROPÉENNE
May 2021
EUROPÄISCHE NORM
ICS 77.140.20; 77.140.85 Supersedes EN 10250-4:1999
English Version
Open die steel forgings for general engineering purposes -
Part 4: Stainless steels

Pièces forgées en acier pour usage général - Partie 4 : Freiformschmiedestücke aus Stahl für allgemeine

Aciers inoxydables Verwendung - Teil 4: Nichtrostende Stähle
This European Standard was approved by CEN on 12 April 2021.

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, Turkey 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

© 2021 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 10250-4:2021 E

worldwide for CEN national Members.
---------------------- Page: 3 ----------------------
SIST EN 10250-4:2021
EN 10250-4:2021 (E)
Contents Page

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

1 Scope .................................................................................................................................................................... 4

2 Normative references .................................................................................................................................... 4

3 Terms and definitions ................................................................................................................................... 4

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

4.1 Cast analysis ...................................................................................................................................................... 4

4.2 Product analysis .............................................................................................................................................. 4

4.3 Chemical corrosion properties .................................................................................................................. 4

5 Heat treatment ................................................................................................................................................. 9

6 Mechanical properties ................................................................................................................................ 10

6.1 Room temperature properties ................................................................................................................. 10

6.2 Low temperature properties .................................................................................................................... 10

6.3 Elevated temperature properties ........................................................................................................... 10

Annex A (informative) Guidelines for further treatment (including heat treatment) in

fabrication ....................................................................................................................................................... 16

Annex B (informative) Mechanical properties at low temperatures ....................................................... 21

Bibliography ................................................................................................................................................................. 22

---------------------- Page: 4 ----------------------
SIST EN 10250-4:2021
EN 10250-4:2021 (E)
European foreword

This document (EN 10250-4:2021) has been prepared by Technical Committee CEN/TC 459/SC 11

“Steel castings and forgings”, 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 November 2021, and conflicting national standards

shall be withdrawn at the latest by November 2021.

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

patent rights. CEN shall not be held responsible for identifying any or all such patent rights.

This document supersedes EN 10250-4:1999.

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

— addition of EN 10028-7 after EN 10088-3 in the note of the Scope;
— removal of EN 10021 and EN 10088-3 from the Normative references;
— addition of Clause 3, Terms and definitions;
— restructuration of Clause 4, Chemical composition;

— introduction of three steel grades in Table 2: X1CrNi25-21, X1CrNiSi18–15–4 and

X2CrNiMnMoN25–18–6-5;
— alignment of silicon characteristics with EN 10088-3 in Table 4;

— addition of 2 columns on resistance to intergranular corrosion in Tables 6 and 7;

— introduction of footnotes in Tables of Annex A;
— deletion of Annex C, Elevated temperature proof strength.

The EN 10250 series, Open die steel forgings for general engineering purposes, consists of the following

parts:
— Part 1: General requirements;
— Part 2: Non-alloy quality and special steels;
— Part 3: Alloy special steels;
— Part 4: Stainless steels.

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, Turkey and the

United Kingdom.
---------------------- Page: 5 ----------------------
SIST EN 10250-4:2021
EN 10250-4:2021 (E)
1 Scope

This document specifies the technical delivery requirements for open die forgings, forged bars and

products pre-forged and finished in ring rolling mills, manufactured from stainless steels with ferritic,

martensitic, austenitic and austenitic-ferritic structures.

NOTE The majority of steels listed in this part of EN 10250 are identical to steels specified EN 10088-3 and

EN 10028-7, and more extensive information on properties is given in these European Standards.

General information on technical delivery conditions is given in EN 10021.
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 10250-1:1999, Open die steel forgings for general engineering purposes - Part 1: General requirements

3 Terms and definitions
No terms and definitions are listed in this document.

ISO and IEC maintain terminological 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/
4 Chemical composition
4.1 Cast analysis

The chemical composition of the steel shall be determined by cast analysis and shall conform to the

analysis given in Tables 1, 2 and 3 (see A.7, A.8, and A.11 of EN 10250-1:1999).

Elements not quoted in Tables 1, 2, and 3 shall not be added intentionally to the steel without the

agreement of the purchaser, except for the purpose of finishing the heat. All reasonable measures

should also be taken to prevent the addition from the scrap, or other material used in the manufacture

of the steel, of such elements which affect the corrosion resistance, mechanical properties and

applicability of the steel.
4.2 Product analysis

The product analysis shall not deviate from the specified cast analysis (see Tables 1, 2 and 3) by more

than the values specified in Table 4 (see 9.2 of EN 10250-1:1999).
4.3 Chemical corrosion properties

Referring to resistance to intergranular corrosion as defined in EN ISO 3651-2, for austenitic, austenitic-

ferritic and ferritic stainless steels the specifications in Tables 6 and 7 apply.

NOTE 1 EN ISO 3651-2 is not applicable for testing martensitic and precipitation hardening steels.

NOTE 2 The corrosion resistance of stainless steels is very dependent on the type of environment and can

therefore not always be clearly ascertained through laboratory tests. It is therefore advisable to draw on the

available experience of the use of the steels.
---------------------- Page: 6 ----------------------
SIST EN 10250-4:2021
EN 10250-4:2021 (E)

Table 1 — Steel grades and chemical composition - Ferritic and martensitic grades

Steel designation
C Si max Mn max P max S max Cr Mo Ni Others
% % % % % % % % %
Name Number
X6CrAl13 1.4002 ≤ 0,08 1,00 1,00 0,040 12,00 to 14,00 – – Al 0,10 to 0,30
0,030
X6Cr17 1.4016 ≤ 0,08 1,00 1,00 0,040 16,00 to 18,00 – – –
0,030
X12Cr13 1.4006 0,08 to 0,15 1,00 1,50 0,040 11,50 to 13,50 – ≤ 0,75 –
0,030
X20Cr13 1.4021 0,16 to 0,25 1,00 1,50 0,040 12,00 to 14,00 – – –
0,030
X30Cr13 1.4028 0,26 to 0,35 1,00 1,50 0,040 12,00 to 14,00 – – –
0,030
X17CrNi16–2 1.4057 0,12 to 0,22 1,00 1,50 0,040 15,00 to 17,00 – 1,50 to 2,50 –
0,030

X3CrNiMo13–4 1.4313 ≤ 0,05 0,70 1,50 0,040 0,015 12,00 to 14,00 0,30 to 0,70 3,50 to 4,50 N ≥ 0,020

X4CrNiMo16–5-1 1.4418 ≤ 0,06 0,70 1,50 0,040 15,00 to 17,00 0,80 to 1,50 4,00 to 6,00 N ≥ 0,020

0,030
Nb = 5xC to 0,45

X5CrNiCuNb16–4 1.4542 ≤ 0,07 0,70 1,50 0,040 15,00 to 17,00 ≤ 0,60 3,00 to 5,00 Cu = 3,00 to 5,00

0,030

For products to be machined a controlled sulfur content of 0,015 % to 0,030 % is recommended.

---------------------- Page: 7 ----------------------
SIST EN 10250-4:2021
EN 10250-4:2021 (E)
Table 2 — Steel grades and chemical composition - Austenitic grades
Steel designation C P
Si max Mn max S max N Cr Mo Ni Nb Ti Others
max max
% % % % % % % % % %
Name Number
% %
17,50 to
X2CrNi18–9 1.4307 0,030 1,00 2,00 0,045 ≤ 0,11 – 8,00 to 10,00 – – –
≤ 0,030
19,50
10,00 to
18,00 to
X2CrNi19–11 1.4306 0,030 1,00 2,00 0,045 ≤ 0,11 – – – –
0,030
20,00
12,00
0,12 to 17,00 to – – –
X2CrNiN18–10 1.4311 0,030 1,00 2,00 0,045 – 8,50 to 11,50
0,030
0,22 19,50
17,00 to – – –
X5CrNi18–10 1.4301 0,07 1,00 2,00 0,045 ≤ 0,11 – 8,00 to 10,50
0,030
19,50
9,00 to
17,00 to 5xC to
X6CrNiTi18–10 1.4541 0,08 1,00 2,00 0,045 – – – –
0,030
19,00 0,70
12,00
10,00 to
16,50 to 2,00 to
X2CrNiMo17–12–2 1.4404 0,030 1,00 2,00 0,045 ≤ 0,11 – – –
0,030
18,50 2,50
13,00
0,12 to 16,50 to 2,00 to 10,00 to
X2CrNiMoN17–11–2 1.4406 0,030 1,00 2,00 0,045 – – –
0,030
0,22 18,50 2,50 12,00
16,50 to 2,00 to 10,00 to
X5CrNiMo17–12–2 1.4401 0,07 1,00 2,00 0,045 ≤ 0,11 – – –
0,030
18,50 2,50 13,00
10,50 to
16,50 to 2,00 to 5xC to
X6CrNiMoTi17–12–2 1.4571 0,08 1,00 2,00 0,045 – – –
0,030
18,50 2,50 0,70
13,50
0,12 to 16,50 to 2,50 to 11,00 to
X2CrNiMoN17–13–3 1.4429 0,030 1,00 2,00 0,045 0,015 – – –
0,22 18,50 3,00 14,00b
10,50 to
16,50 to 2,50 to
X3CrNiMo17–13–3 1.4436 0,05 1,00 2,00 0,045 ≤ 0,11 – – –
0,030
18,50 3,00
13,00
17,00 to 2,50 to 12,50 to
X2CrNiMo18–14–3 1.4435 0,030 1,00 2,00 0,045 ≤ 0,11 – – –
0,030
19,00 3,00 15,00
---------------------- Page: 8 ----------------------
SIST EN 10250-4:2021
EN 10250-4:2021 (E)
Steel designation C P
Si max Mn max S max N Cr Mo Ni Nb Ti Others
max max
% % % % % % % % % %
Name Number
% %
19,00 to 4,00 to 24,00 to Cu 1,20 to
X1NiCrMoCu25–20–5 1.4539 0,020 0,70 2,00 0,030 0,010 ≤ 0,15 – –
21,00 5,00 26,00 2,00
20,00 to
24,00 to
X1CrNi25-21 1.4335 0,020 0,25 2,00 0,025 0,010 ≤ 0,11 0,20 – – –
26,00
22,00
9,00 to
17,00 to 10xC to
X6CrNiNb18–10 1.4550 0,08 1,00 2,00 0,045 0,015 – – – –
19,00 1,00
12,00
3,7 to 16,5 to
X1CrNiSi18–15–4 1.4361 0,015 2,00 0,025 0,010 ≤ 0,10 0,20 14,0 to 16,0 – – –
4,5 18,5
26,00 to 3,00 to 30,00 to Cu 0,70 to
X1NiCrMoCu31–27–4 1.4563 0,020 0,70 2,00 0,030 ≤ 0,010 ≤ 0,11 – –
28,00 4,00 32,00 1,50
0,18 to 19,50 to 6,00 to 17,500 to Cu 0,50 to
X1CrNiMoCuN20–18–7 1.4547 0,020 0,70 1,00 0,030 0,010 – –
0,25 20,50 7,00 18,50 1,00
5,00 to 0,30 to 24,00 to 4,00 to 16,00 to
X2CrNiMnMoN25–18–6-5 1.4565 0,030 1,00 0,030 0,015 ≤ 0,15 – –
7,00 0,60 26,00 5,00 19,00
0,15 to 19,00 to 6,00 to 24,00 to
X1NiMoCuN25–20–7 1.4529 0,020 0,50 1,00 0,030 0,010 – – –
0,25 21,00 7,00 26,00

For products to be machined a controlled sulfur content of 0,015 % to 0,030 % is recommended.

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

content may be increased by the following amounts:
– 0,50 %: 1.4571
– 1,00 %: 1.4306, 1.4429, 1.4436, 1.4541, 1.4550
– 1,50 %: 1.4404
---------------------- Page: 9 ----------------------
SIST EN 10250-4:2021
EN 10250-4:2021 (E)
Table 3 — Steel grades and chemical composition - Austenitic-ferritic grades
C Si Mn P S
Steel designation N Cr Mo Ni Others
max max max max max
Name Number % % % % % % % % % %
Cu 0,10 to

X2CrNiN23–4 1.4362 0,030 1,00 2,00 0,035 0,015 0,05 to 0,20 22,00 to 24,00 0,10 to 0,60 3,50 to 5,50

0,60

X3CrNiMoN27–5-2 1.4460 0,05 1,00 2,00 0,035 0,05 to 0,20 25,00 to 28,00 1,30 to 2,00 4,50 to 6,50 –

0,030

X2CrNiMoN22–5-3 1.4462 0,030 1,00 2,00 0,035 0,015 0,10 to 0,22 21,00 to 23,00 2,50 to 3,50 4,50 to 6,50 –

Cu 1,00 to

X2CrNiMoCuN25–6-3 1.4507 0,030 0,70 2,00 0,035 0,015 0,15 to 0,30 24,00 to 26,00 2,70 to 4,00 5,50 to 7,50

2,50

X2CrNiMoN25–7-4 1.4410 0,030 1,00 2,00 0,035 0,015 0,20 to 0,35 24,00 to 26,00 3,00 to 4,50 6,00 to 8,00 –

W 0,50 to
1,00

X2CrNiMoCuWN25–7-4 1.4501 0,030 1,00 1,00 0,035 0,015 0,20 to 0,30 24,00 to 26,00 3,00 to 4,00 6,00 to 8,00

Cu 0,50
...

SLOVENSKI STANDARD
oSIST prEN 10250-4:2018
01-november-2018

3URVWRNRYDQLMHNOHQLL]NRYNL]DVSORãQRWHKQLþQRXSRUDERGHO1HUMDYQDMHNOD

Open die steel forgings for general engineering purposes - Part 4: Stainless steels

Freiformschmiedestücke aus Stahl für allgemeine Verwendung - Teil 4:Nichtrostende

Stähle
Pièces forgées en acier pour usage général - Partie 4: Aciers inoxydables
Ta slovenski standard je istoveten z: prEN 10250-4:2018
ICS:
77.140.20 Visokokakovostna jekla Stainless steels
77.140.85 Železni in jekleni kovani Iron and steel forgings
izdelki
oSIST prEN 10250-4:2018 en,fr,de

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

---------------------- Page: 1 ----------------------
oSIST prEN 10250-4:2018
---------------------- Page: 2 ----------------------
oSIST prEN 10250-4:2018
DRAFT
EUROPEAN STANDARD
prEN 10250-4
NORME EUROPÉENNE
EUROPÄISCHE NORM
September 2018
ICS 77.140.20; 77.140.85 Will supersede EN 10250-4:1999
English Version
Open die steel forgings for general engineering purposes -
Part 4: Stainless steels

Pièces forgées en acier pour usage général - Partie 4: Freiformschmiedestücke aus Stahl für allgemeine

Aciers inoxydables Verwendung - Teil 4:Nichtrostende Stähle

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

ECISS/TC 111.

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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,

Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, 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

© 2018 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 10250-4:2018:2018 E

worldwide for CEN national Members.
---------------------- Page: 3 ----------------------
oSIST prEN 10250-4:2018
prEN 10250-4:2018 (E)
Contents

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

1 Scope .................................................................................................................................................................... 4

2 Normative references .................................................................................................................................... 4

3 Chemical Composition ................................................................................................................................... 4

3.1 Cast Analysis ..................................................................................................................................................... 4

3.2 Product Analysis .............................................................................................................................................. 4

4 Heat treatment ................................................................................................................................................. 9

5 Mechanical properties ................................................................................................................................... 9

5.1 Room temperature properties ................................................................................................................... 9

5.2 Low temperature properties ................................................................................................................... 10

5.3 Elevated temperature properties .......................................................................................................... 10

Annex A (informative) Heat treatment details ................................................................................................ 13

Annex B (informative) Mechanical properties at low temperatures .................................................... 15

Annex C (informative) Elevated temperature proof strength .................................................................... 16

Bibliography ................................................................................................................................................................. 19

---------------------- Page: 4 ----------------------
oSIST prEN 10250-4:2018
prEN 10250-4:2018 (E)
European foreword

This document (prEN 10250-4:2018) has been prepared by Technical Committee ECISS/TC 111 “Steel

castings and forgings”, the secretariat of which is held by AFNOR.
This document is currently submitted to the CEN Enquiry.
This document will supersede EN 10250-4:1999.
---------------------- Page: 5 ----------------------
oSIST prEN 10250-4:2018
prEN 10250-4:2018 (E)
1 Scope

This document specifies the technical delivery requirements for open die forgings, forged bars and

products pre-forged and finished in ring rolling mills, manufactured from stainless steels with ferritic,

martensitic, austenitic and austenitic-ferritic structures.

NOTE The majority of steels listed in this part of EN 10250 are identical to steels specified EN 10088-3 and

more extensive information on properties is given in that European Standard.
General information on technical delivery conditions is given in EN 10021.
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 10250-1:1999, Open die steel forgings for general engineering purposes - Part 1: General requirements

3 Chemical Composition
3.1 Cast Analysis

The chemical composition of the steel shall be determined by cast analysis and shall conform to the

analysis given in Tables 1, 2 and 3. (see A.7, A.8, and A.11 of EN 10250-1:1999).

Elements not quoted in Tables 1, 2, and 3 shall not be added intentionally to the steel without the

agreement of the purchaser, except for the purpose of finishing the heat. All reasonable measures should

also be taken to prevent the addition from the scrap, or other material used in the manufacture of the

steel, of such elements which affect the corrosion resistance, mechanical properties and applicability of

the steel.
3.2 Product Analysis

The product analysis shall not deviate from the specified cast analysis (see Tables 1, 2 and 3) by more

than the values specified in Table 4 (see 9.2 to EN 10250-1:1999).
---------------------- Page: 6 ----------------------
oSIST prEN 10250-4:2018
prEN 10250-4:2018 (E)

Table 1 — Steel grades and chemical composition - ferritic and martensitic grades

Steel designation C Si max Mn max P max S max Cr Mo Ni Others
% % % % % % % % %
Name Number
X6CrAl13 1.4002 1,00 1,00 0,040 1) 12,00 to 14,00 _ _ Al 0,10 to 0,30
≤ 0,08
0,030
X6Cr17 1.4016 1,00 1,00 0,040 1) 16,00 to 18,00 _ _ _
≤ 0,08
0,030
X12Cr13 1.4006 1,00 1,50 0,040 1) 11,50 to 13,50 _ _
0,08 to 0,15 ≤ 0,75
0,030
X20Cr13 1.4021 1,00 1,50 0,040 1) 12,00 to 14,00 _ _ _
0,16 to 0,25
0,030
X30Cr13 1.4028 1,00 1,50 0,040 1) 12,00 to 14,00 _ _ _
0,26 to 0,35
0,030
X17CrNi16–2 1.4057 1,00 1,50 0,040 1) 15,00 to 17,00 – 1,50 to 2,50 –
0,12 to 0,22
0,030

X3CrNiMo13–4 1.4313 ≤ 0,05 0,70 1,50 0,040 0,015 12,00 to 14,00 0,30 to 0,70 3,50 to 4,50 N ≥ 0,020

X4CrNiMo16–5-1 1.4418 0,70 1,50 0,040 1) 15,00 to 17,00 0,80 to 1,50 4,00 to 6,00 N ≥ 0,020

≤ 0,06
0,030
Nb = 5xC to 0,45

X5CrNiCuNb16–4 1.4542 ≤ 0,07 0,70 1,50 0,040 15,00 to 17,00 ≤ 0,60 3,00 to 5,00 Cu = 3,00 to 5,00

0,030

For products to be machined a controlled sulfur content of 0,015 to 0,030 % is recommended.

---------------------- Page: 7 ----------------------
oSIST prEN 10250-4:2018
prEN 10250-4:2018 (E)
Table 2 — Steel grades and chemical composition - austenitic grades
Steel designation C max Si max Mn max P max S max N Cr Mo Ni Nb Ti Others
% % % % % % % % % % % %
Name Number
X2CrNi18–9 1.4307 0,030 1,00 2,00 0,045 ≤ 0,030 ≤ 17,50 to – 8,00 to – – –
0,11
1) 19,50 10,00
X2CrNi19–11 1.4306 0,030 1,00 2,00 0,045 1) ≤ 18,00 to _ 10,00 to - - -
0,11
0,030
20,00 2)
12,00

X2CrNiN18–10 1.4311 0,030 1,00 2,00 0,045 1) 0,12 to 0,22 17,00 to _ 8,50 to _ _ _

0,030
19,50 11,50
X5CrNi18–10 1.4301 0,07 1,00 2,00 0,045 1) ≤ 17,00 to _ 8,00 to _ _ _
0,11
0,030
19,50 10,50

X6CrNiTi18–10 1.4541 0,08 1,00 2,00 0,045 1) _ 17,00 to _ 9,00 to _ 5xC to 0,70 _

0,030
19,00 2)
12,00

X2CrNiMo17–12–2 1.4404 0,030 1,00 2,00 0,045 1) ≤ 16,50 to 2,00 to 10,00 to _ _ _

0,11
0,030
18,50 2,50 2)
13,00

X2CrNiMoN17– 1.4406 0,030 1,00 2,00 0,045 1) 0,12 to 0,22 16,50 to 2,00 to 10,00 to _ _ _

0,030
11–2 18,50 2,50 12,00

X5CrNiMo17–12–2 1.4401 0,07 1,00 2,00 0,045 1) ≤ 16,50 to 2,00 to 10,00 to - - -

0,11
0,030
18,50 2,50 13,00

X6CrNiMoTi17– 1.4571 0,08 1,00 2,00 0,045 1) _ 16,50 to 2,00 to 10,50 to _ 5xC to 0,70 _

0,030
12–2 18,50 2,50 2)
13,50

X2CrNiMoN17– 1.4429 0,030 1,00 2,00 0,045 0,015 0,12 to 0,22 16,50 to 2,50 to 11,00 to - - -

13–3 18,50 3,00 2)
14,00

X3CrNiMo17–13–3 1.4436 0,05 1,00 2,00 0,045 1) ≤ 16,50 to 2,50 to 10,50 to - - -

0,11
0,030
18,50 3,00 2)
13,00

X2CrNiMo18–14–3 1.4435 0,030 1,00 2,00 0,045 1) ≤ 17,00 to 2,50 to 12,50 to - - -

0,11
0,030
19,00 3,00 15,00
---------------------- Page: 8 ----------------------
oSIST prEN 10250-4:2018
prEN 10250-4:2018 (E)

X1NiCrMoCu25– 1.4539 0,020 0,70 2,00 0,030 0,010 ≤ 19,00 to 4,00 to 24,00 to - - Cu 1,20 to

0,15
20–5 21,00 5,00 26,00 2,00
X6CrNiNb18–10 1.4550 0,08 1,00 2,00 0,045 0,015 _ 17,00 to _ 9,00 to 10xC to _ _
19,00 2) 1,00
12,00

X1NiCrMoCu31– 1.4563 0,020 0,70 2,00 0,030 ≤ - ≤ 26,00 to 3,00 to 30,00 to - - Cu 0,70 to

0,010 0,11
27–4 28,00 4,00 32,00 1,50

X1CrNiMoCuN20– 3) 0,020 0,70 1,00 0,030 0,010 0,18 to 0,25 19,50 to 6,00 to 17,500 to - - Cu 0,50 to

1.4547
3) 20,50 7,00 18,50 1,00
18–7

X1NiMoCuN25– 1.4529 0,020 0,50 1,00 0,030 0,010 0,15 to 0,25 19,00 to2 6,00 to 24,00 to - – –

20–7 1,00 7,00 26,00

For products to be machined a controlled sulfur content of 0,015 to 0,030 % is recommended.

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

may be increased by the following amounts:
- 0,50 %: 1.4571
– 1,00 %: 1.4306, 1.4429, 1.4436, 1.4541, 1.4550
– 1,50 %: 1.4404
Patented steel
---------------------- Page: 9 ----------------------
oSIST prEN 10250-4:2018
prEN 10250-4:2018 (E)
Table 3 — Steel grades and chemical composition - austenitic-ferritic grades
Steel designation C Si Mn P S N Cr Mo Ni Others
max max max max max
Name Number % % % % % % % % % %
2) 2)

1.4362 0,030 1,00 2,00 0,035 0,015 0,05 to 0,20 22,00 to 24,00 0,10 to 0,60 3,50 to 5,50 Cu 0,10 to

X2CrNiN23–4
0,60

X3CrNiMoN27–5-2 1.4460 0,05 1,00 2,00 0,035 0,030 0,05 to 0,20 25,00 to 28,00 1,30 to 2,00 4,50 to 6,50 –

X2CrNiMoN22–5-3 1.4462 0,030 1,00 2,00 0,035 0,015 0,10 to 0,22 21,00 to 23,00 2,50 to 3,50 4,50 to 6,50 –

X2CrNiMoCuN25–6-3 1.4507 0,030 0,70 2,00 0,035 0,015 0,15 to 0,30 24,00 to 26,00 2,70 to 4,00 5,50 to 7,50 Cu 1,00 to

2,50
2) 2)

X2CrNiMoN25–7-4 1.4410 0,030 1,00 2,00 0,035 0,015 0,20 to 0,35 24,00 to 26,00 3,00 to 4,50 6,00 to 8,00 –

X2CrNiMoCuWN25–7-4 1.4501 0,030 1,00 1,00 0,035 0,015 0,20 to 0,30 24,00 to 26,00 3,00 to 4,00 6,00 to 8,00 W 0,50 to

1,00
Cu 0,50 to
1,00

For products to be machined a controlled sulfur content of 0,015 to 0,030 % is recommended.

Patented steel
---------------------- Page: 10 ----------------------
oSIST prEN 10250-4:2018
prEN 10250-4:2018 (E)

Table 4 — Permissible deviations between the product analysis and the limiting values given

in Tables 1, 2 and 3 for the cast analysis
Element Permissible maximum content in Permissible deviation
the cast analysis
Carbon ≤ 0,030 + 0,005
> 0,030 ≤ 0,20 ±0,01
> 0,20 ≤ 0,35 ±0,02
Silicon ≤ 1,00 + 0,05
Manganese ≤ 1,0 + 0,03
> 1,0 ≤ 2,0 ±0,04
Phosphorus ≤ 0,045 + 0,005
Sulfur ≤ 0,015 + 0,003
> 0,015
...

Questions, Comments and Discussion

Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.