SIST EN 3531:2025

Aerospace series - Steel X2NiCoMo18 8 5 (1.6359) - Vacuum induction melted and vacuum arc remelted - Solution treated and precipitation treated - Sheets and strips - a ≤ 6 mm - 1 750 MPa ≤ Rm ≤ 2 000 MPa

This document specifies the requirements relating to:
Steel X2NiCoMo18-8-5 (1.6359)
Vacuum induction melted and vacuum arc remelted
Solution treated and precipitation treated
Sheets and strips
a ≤ 6 mm
1 750 MPa ≤ Rm ≤ 2 000 MPa
for aerospace applications.
W.nr: 1.6359
ASD-STAN designation: FE-PM2701

Luft- und Raumfahrt - Stahl X2NiCoMo18 8 5 (1.6359) - Vakuuminduktionserschmolzen und mit selbstverzehrender Elektrode im Vakuum umgeschmolzen - Lösungsgeglüht und ausgelagert - Bleche und Bänder - a ≤ 6 mm - 1 750 MPa ≤ Rm ≤ 2 000 MPa

Dieses Dokument legt die Anforderungen an:
Stahl X2NiCoMo18 8 5 (1.6359)
Vakuuminduktionserschmolzen und vakuumlichtbogenumgeschmolzen
Lösungsgeglüht und ausscheidungsgehärtet
Bleche und Bänder
a ≤ 6 mm
1 750 MPa ≤ Rm ≤ 2 000 MPa
für Anwendungen in der Luft- und Raumfahrt fest.
Werkstoffnummer: 1.6359
ASD-STAN-Bezeichnung: FE-PM2701

Série aérospatiale - Acier X2NiCoMo18 8 5 (1.6359) - Élaboré sous vide et refondu par arc sous vide - Mis en solution et vieilli - Tôles et bandes - a ≤ 6 mm - 1 750 MPa ≤ Rm ≤ 2 000 MPa

Le présent document spécifie les exigences relatives à :
Acier X2NiCoMo18-8-5 (1.6359)
Élaboré sous vide par induction et refondu sous vide par arc
Mis en solution et précipité
Tôles et bandes
a ≤ 6 mm
1 750 MPa ≤ Rm ≤ 2 000 MPa
pour les applications aérospatiales.
Désignation ASD-STAN : FE-PM2701
Numéro de matériau : 1.6359

Aeronavtika - Jeklo X2NiCoMo18-8-5 (1.6359) - Indukcijsko vakuumsko taljeno in obločno vakuumsko pretaljeno - Topilno žarjeno in utrjeno z obločenjem - Pločevina in trakovi - a ≤ 6 mm - 1 750 MPa ≤ Rm ≤ 2 000 MPa

General Information

• Status: Published
• Public Enquiry End Date: 11-Sep-2024
• Publication Date: 23-Sep-2025
• ICS: 49.025.10 - Steels
• ICS: 77.140.50 - Flat steel products and semi-products
• Technical Committee: I13 - Imaginarni 13
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 18-Sep-2025
• Due Date: 23-Nov-2025
• Completion Date: 24-Sep-2025
• Ref Project: EN 3531:2025 - Aerospace series - Steel X2NiCoMo18-8-5 (1.6359) - Vacuum induction melted and vacuum arc remelted - Solution treated and precipitation treated - Sheets and strips - a ≤ 6 mm - 1 750 MPa ≤ Rm ≤ 2 000 MPa

Relations

• Revises: SIST EN 3531:2009 - Aerospace series - Steel FE-PM2701 (X2NiCoMo18-8-5) - Vacuum induction melted and vacuum arc remelted - Solution treated and precipitation treated - Sheet and strip - a ≤ 6 mm - 1 750 MPa ≤ Rm ≤ 2 000 MPa
• Effective Date: 19-Jun-2024
• Revises: SIST EN 3431:2008 - Aerospace series - Nuts, hexagonal, self-locking, with counterbore and captive washer, in heat resisting steel, silver plated - Classification: 1 100 MPa (at ambient temperature) / 425 °C
• Effective Date: 22-May-2024

Standards Content (Sample)

SLOVENSKI STANDARD
01-november-2025
Aeronavtika - Jeklo X2NiCoMo18-8-5 (1.6359) - Indukcijsko vakuumsko taljeno in
obločno vakuumsko pretaljeno - Topilno žarjeno in utrjeno z obločenjem -
Pločevina in trakovi - a ≤ 6 mm - 1 750 MPa ≤ Rm ≤ 2 000 MPa
Aerospace series - Steel X2NiCoMo18 8 5 (1.6359) - Vacuum induction melted and
vacuum arc remelted - Solution treated and precipitation treated - Sheets and strips - a ≤
6 mm - 1 750 MPa ≤ Rm ≤ 2 000 MPa
Luft- und Raumfahrt - Stahl X2NiCoMo18 8 5 (1.6359) - Vakuuminduktionserschmolzen
und mit selbstverzehrender Elektrode im Vakuum umgeschmolzen - Lösungsgeglüht und
ausgelagert - Bleche und Bänder - a ≤ 6 mm - 1 750 MPa ≤ Rm ≤ 2 000 MPa
Série aérospatiale - Acier X2NiCoMo18 8 5 (1.6359) - Élaboré sous vide et refondu par
arc sous vide - Mis en solution et vieilli - Tôles et bandes - a ≤ 6 mm - 1 750 MPa ≤ Rm ≤
2 000 MPa
Ta slovenski standard je istoveten z: EN 3531:2025
ICS:
49.025.10 Jekla Steels
77.140.50 Ploščati jekleni izdelki in Flat steel products and semi-
polizdelki products
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN 3531
EUROPEAN STANDARD
NORME EUROPÉENNE
September 2025
EUROPÄISCHE NORM
ICS 49.025.10 Supersedes EN 3531:2007
English Version
Aerospace series - Steel X2NiCoMo18-8-5 (1.6359) -
Vacuum induction melted and vacuum arc remelted -
Solution treated and precipitation treated - Sheets and
strips - a  6 mm - 1 750 MPa  Rm  2 000 MPa
Série aérospatiale - Acier X2NiCoMo18 8 5 (1.6359) - Luft- und Raumfahrt - Stahl X2NiCoMo18-8-5 (1.6359)
Élaboré sous vide par induction et refondu sous vide - Vakuuminduktionserschmolzen und
par arc - Mis en solution et précipité - Tôles et bandes - vakuumlichtbogenumgeschmolzen - Lösungsgeglüht
a  6 mm - 1 750 MPa  Rm  2 000 MPa und ausscheidungsgehärtet - Bleche und Bänder - a  6
mm - 1 750 MPa  Rm  2 000 MPa
This European Standard was approved by CEN on 27 July 2025.

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
© 2025 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 3531:2025 E
worldwide for CEN national Members.

Contents Page
European foreword . 3
Introduction . 4
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 5
4 Requirements . 5
Bibliography . 9

European foreword
This document (EN 3531:2025) has been prepared by ASD-STAN.
After enquiries and votes carried out in accordance with the rules of this Association, this document has
received the approval of the National Associations and the Official Services of the member countries of
ASD-STAN, prior to its presentation to CEN.
This document shall be given the status of a national standard, either by publication of an identical text
or by endorsement, at the latest by March 2026, and conflicting national standards shall be withdrawn
at the latest by March 2026.
Attention is drawn to the possibility that some o
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