EN 3160:2026

Aerospace series - Steel X5CrNiCu17-4 (1.4542) - Air melted - Solution treated and precipitation treated - Bars - a or D ≤ 200 mm - Rm ≥ 1 310 MPa

This document specifies the requirements relating to:
Steel X5CrNiCu17-4 (1.4542)
Air melted
Solution treated and precipitation treated
Bars
a or D ≤ 200 mm
Rm ≥ 1 310 MPa
for aerospace applications.
W.nr: 1.4542.
ASD-STAN: FE-PM3801.

Luft- und Raumfahrt - Stahl X5CrNiCu17 4 (1.4542) - Lufterschmolzen - Lösungsgeglüht und ausscheidungsgehärtet - Stangen - a oder D ≤ 200 mm - Rm ≥ 1 310 MPa

Dieses Dokument legt die Anforderungen an:
Stahl X5CrNiCu17 4 (1.4542)
Lufterschmolzen
Lösungsgeglüht und ausscheidungsgehärtet
Stangen
a oder D ≤ 200 mm
Rm ≥ 1 310 MPa
für Anwendungen in der Luft- und Raumfahrt fest.
Werkstoffnummer: 1.4542.
ASD-STAN-Bezeichnung: FE-PM3801.

Série aérospatiale - Acier X5CrNiCu17-4 (1.4542) - Élaboré à l'air - Mis en solution et précipité - Barres - a ou D ≤ 200 mm - Rm ≥ 1 310 MPa

Le présent document spécifie les exigences relatives à :
Acier X5CrNiCu17-4 (1.4542)
Élaboré à l'air
Mis en solution et précipité
Barres
a ou D ≤ 200 mm
Rm ≥ 1 310 MPa
pour les applications aérospatiales.
W.nr : 1.4542.
ASD-STAN : FE-PM3801.

Aeronavtika - Jeklo X5CrNiCu17-4 (1.4542) - Taljeno - Topilno žarjeno in izločevalno utrjeno - Palice - a ali D ≤ 200 mm - Rm ≥ 1 310 MPa

General Information

• Status: Published
• Publication Date: 19-May-2026
• ICS: 49.025.10 - Steels
• Technical Committee: ASD-STAN - Aerospace
• Drafting Committee: ASD-STAN/D 4/S 3 - Steels & Heat Resisting Alloys
• Current Stage: 6060 - Definitive text made available (DAV) - Publishing
• Start Date: 20-May-2026
• Completion Date: 20-May-2026
• Ref Project: kSIST FprEN 3160:2025 - Aerospace series - Steel X5CrNiCu17-4 (1.4542) - Air melted - Solution treated and precipitation treated - Bars - a or D ≤ 200 mm - Rm ≥ 1 310 MPa

Relations

• Replaces: EN 3160:2007 - Aerospace series - Steel FE-PM3801 (X5CrNiCu17-4) - Air melted, solution treated and precipitation treated, bar a or D ≤ 200 mm, Rm ≥ 1 310 MPa
• Effective Date: 18-Jan-2023
• Referred By: EN 4632-004:2012 - Aerospace series - Weldability and brazeability of materials in aerospace constructions - Part 004: Welding and brazing of homogeneous assemblies of high alloyed steels
• Effective Date: 27-May-2026

Overview

EN 3160:2026 defines the requirements for steel X5CrNiCu17-4 (1.4542) bars used in aerospace applications. Issued by CEN, this standard covers air melted, solution treated, and precipitation treated steel bars with cross-section a or D ≤ 200 mm, and a minimum ultimate tensile strength (Rm) of 1 310 MPa. EN 3160:2026 supersedes the earlier EN 3160:2007 and incorporates technical updates, ensuring the quality and suitability of this stainless steel for demanding aerospace environments.

By specifying stringent mechanical and production criteria, EN 3160:2026 helps guarantee material consistency, performance, and safety in aerospace components and assemblies. It references essential standards for product qualification, test methods, and inspection procedures.

Key Topics

• Material specification: X5CrNiCu17-4 steel (W.nr: 1.4542), a widely used precipitation hardening martensitic stainless steel, air melted for enhanced control.
• Mechanical properties: Minimum ultimate tensile strength (Rm) of 1 310 MPa, ensuring the material meets the high-performance requirements in aerospace.
• Dimensional limits: Applies to bars where the side (a) or diameter (D) is no greater than 200 mm.
• Heat treatment: Requires solution treatment and precipitation hardening to optimize mechanical strength and corrosion resistance.
• Production and inspection: Includes strict requirements for microstructure (δ-ferrite content ≤ 5%), grain size, internal and external imperfections, and marking.
• Delivery condition: Detailed codes and inspection rules for delivery to ensure product traceability and conformity.
• Test methods and qualification: Adheres to EN standards for testing, including visual and ultrasonic inspection, ensuring quality throughout manufacturing.

Applications

EN 3160:2026 is designed for aerospace engineering but is applicable in any high-reliability sector where robust, corrosion-resistant stainless steel bars are critical. Practical uses include:

• Structural components: Due to its high strength and toughness, X5CrNiCu17-4 bars are ideal for load-bearing parts in aircraft and spacecraft.
• Landing gear and fasteners: The material’s combination of strength and corrosion resistance makes it suitable for safety-critical fasteners and gear units.
• Engine and mechanical systems: Used in shafts, pins, and fittings exposed to mechanical and thermal stress.
• Tooling and fixtures: Where predictable material behavior under stress and exposure to harsh environments is needed.

By providing clear specifications and testing criteria, EN 3160:2026 minimizes risk of failure and promotes interchangeability among manufacturers and suppliers across Europe and internationally.

Related Standards

Professionals referencing EN 3160:2026 should also be aware of the following relevant standards for seamless integration and compliance in aerospace material selection and quality assurance:

• EN 2043: General requirements for qualification of semi-finished metallic products (excluding forgings and castings).
• EN 4436: Test methods for determination of δ ferrite content in steel.
• EN 4700-002: Technical specification for steel and heat-resisting alloy bars and sections.
• EN 4258: Overview of metallic materials standardization in aerospace.
• EN 4500 series: Rules for drafting and presentation of steel-related standards.

These cross-references ensure comprehensive oversight from raw material selection through product qualification and delivery.

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Keywords: EN 3160:2026, X5CrNiCu17-4, 1.4542 stainless steel, aerospace stainless steel bar, precipitation hardening, solution treated steel, high tensile strength steel, CEN standard, aerospace materials, steel bar quality assurance.

Standards Content (Sample)

SLOVENSKI STANDARD
oSIST prEN 3160:2024
01-september-2024
Nadomešča:
SIST EN 3160:2007
Aeronavtika - Jeklo X5CrNiCu17-4 (1.4542) - Taljeno - Topilno žarjeno in
izločevalno utrjeno - Palice - a ali D ≤ 200 mm - Rm ≥ 1 310 MPa
Aerospace series - Steel X5CrNiCu17-4 (1.4542) - Air melted - Solution treated and
precipitation treated - Bars - a or D ≤ 200 mm - Rm ≥ 1 310 MPa
Luft- und Raumfahrt - Stahl X5CrNiCu17-4 (1.4542) - Lufterschmolzen - Lösungsgeglüht
und ausgehärtet - Stangen - a oder D ≤ 200 mm - Rm ≥ 1 310 MPa
Série aérospatiale - Acier X5CrNiCu17-4 (1.4542) - Élaboré à l'air - Mis en solution et
précipité - Barres - a ou D ≤ 200 mm - Rm ≥ 1 310 MPa
Ta slovenski standard je istoveten z: prEN 3160
ICS:
49.025.10 Jekla Steels
77.140.60 Jeklene palice in drogovi Steel bars and rods
oSIST prEN 3160:2024 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

oSIST prEN 3160:2024
oSIST prEN 3160:2024
DRAFT
EUROPEAN STANDARD
prEN 3160
NORME EUROPÉENNE
EUROPÄISCHE NORM
June 2024
ICS 49.025.10 Will supersede EN 3160:2007
English Version
Aerospace series - Steel X5CrNiCu17-4 (1.4542) - Air
melted - Solution treated and precipitation treated - Bars -
a or D  200 mm - Rm  1 310 MPa
Série aérospatiale - Acier X5CrNiCu17-4 (1.4542) - Luft- und Raumfahrt - Stahl X5CrNiCu17-4 (1.4542) -
Élaboré à l'air - Mis en solution et précipité - Barres - a Lufterschmolzen - Lösungsgeglüht und ausgehärtet -
ou D  200 mm - Rm  1 310 MPa Stangen - a oder D  200 mm - Rm  1 310 MPa
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee ASD-
STAN.
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
© 2024 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 3160:2024 E
worldwide for CEN national Members.

oSIST prEN 3160:2024
prEN 3160:2024 (E)
Contents Page
European foreword . 3
Introduction . 4
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 5
4 Requirements . 5
Bibliography . 9

oSIST prEN 3160:2024
prEN 3160:2024 (E)
European foreword
This document (prEN 3160:2024) 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 is currently submitted to the CEN Enquiry.
This document will supersede EN 3160:2007.
prEN 3160:2024 includes the following significant technical changes with respect to E
...