SIST EN 3161:2026

Aerospace series - Steel X5CrNiCu17-4 (1.4542) - Air melted - Solution treated and precipitation treated - Bars - a or D ≤ 200 mm - Rm ≥ 930 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 ≥ 930 MPa
for aerospace applications.
W.nr: 1.4542.
ASD-STAN: FE-PM3801.

Luft- und Raumfahrt - Stahl X5CrNiCu17-4 (1.4542) - Lufterschmolzen - Lösungsgeglüht und ausgehärtet - Stangen - a oder D ≤ 200 mm - Rm ≥ 930 MPa

Dieses Dokument legt die Anforderungen an:
Stahl X5CrNiCu17 4 (1.4542)
Lufterschmolzen
Lösungsgeglüht und ausscheidungsgehärtet
Stangen
a oder D ≤ 200 mm
Rm ≥ 930 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 ≥ 930 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 ≥ 930 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 ≥ 930 MPa

General Information

• Status: Not Published
• Public Enquiry End Date: 04-Sep-2024
• ICS: 49.025.10 - Steels
• Technical Committee: I13 - Imaginarni 13
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 10-Jun-2026
• Due Date: 15-Aug-2026
• Ref Project: EN 3161:2026 - Aerospace series - Steel X5CrNiCu17-4 (1.4542) - Air melted - Solution treated and precipitation treated - Bars - a or D ≤ 200 mm - Rm ≥ 930 MPa

Relations

• Referred By: SIST EN 4613:2009 - Aerospace series - Spherical plain bearings in corrosion resisting steel with self-lubricating liner, narrow series - Dimensions and loads - Inch series
• Effective Date: 27-May-2026
• Referred By: SIST EN 4614:2009 - Aerospace series - Spherical plain bearings in corrosion resisting steel with self-lubricating liner, wide series - Dimensions and loads - Inch series
• Effective Date: 27-May-2026
• Referred By: SIST EN 4854-1:2020 - Aerospace series - Bearing, spherical plain, in corrosion resisting steel with self-lubricating liner, low starting torque and low friction coefficient, elevated duty cycles under low oscillations at different operating conditions, narrow series - Part 1: Dimensions and loads for narrow series
• Effective Date: 27-May-2026
• Referred By: SIST EN 4613:2021 - Aerospace series - Spherical plain bearing in corrosion resisting steel with self-lubricating liner, narrow series - Dimensions and loads - Inch series
• Effective Date: 27-May-2026
• Referred By: SIST EN 4538-003:2011 - Aerospace series - Bearings, spherical plain, in corrosion resisting steel with self-lubricating liner elevated load under low oscillations - Narrow series - Dimensions and loads - Part 003: Inch series with low friction coefficient
• Effective Date: 27-May-2026
• Referred By: SIST EN 4632-004:2014 - 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
• Referred By: SIST EN 6029:2017 - Aerospace series - Rod-ends, adjustable, single fork with UNJ threaded shank min. engagement: 1,5 x thread diameter in corrosion resisting steel - Dimensions and loads - Inch series
• Effective Date: 27-May-2026
• Referred By: SIST EN 4265:2014 - Aerospace series - Bearing spherical plain, metal to metal in corrosion resisting steel - Wide series - Dimensions and loads - Inch series
• Effective Date: 27-May-2026
• Referred By: SIST EN 4854-2:2020 - Aerospace series - Bearing, spherical plain, in corrosion resisting steel with self-lubricating liner, low starting torque and low friction coefficient, elevated duty cycles under low oscillations at different operating conditions, wide series - Part 2: Dimensions and loads
• Effective Date: 27-May-2026
• Referred By: SIST EN 4614:2021 - Aerospace series - Spherical plain bearing in corrosion resisting steel with self-lubricating liner, wide series - Dimensions and loads - Inch series
• Effective Date: 27-May-2026
• Referred By: SIST EN 4040:2009 - Aerospace series - Bearings, spherical plain in corrosion resisting steel with self-lubricating liner with wide inner ring - Elevated loads at ambient temperature - Dimensions and loads
• Effective Date: 27-May-2026
• Referred By: SIST EN 6097:2019 - Aerospace series - Bearing, spherical plain, metal to metal, extra wide inner ring in corrosion resisting steel - Dimensions and loads - Inch series
• Effective Date: 27-May-2026
• Referred By: SIST EN 2287:2022 - Aerospace series - Bush, plain, in corrosion resisting steel with self-lubricating liner - Dimensions and loads
• Effective Date: 27-May-2026
• Referred By: SIST EN 2584:2019 - Aerospace series - Bearings, spherical plain in corrosion resisting steel with self-lubricating liner - Narrow series - Elevated load at ambient temperature - Dimensions and loads
• Effective Date: 27-May-2026
• Referred By: SIST EN 4266:2014 - Aerospace series - Bearing spherical plain, metal to metal, in corrosion resisting steel, cadmium plated - Wide series - Dimensions and loads - Inch series
• Effective Date: 27-May-2026

Overview

SIST EN 3161:2026 defines the requirements for steel X5CrNiCu17-4 (material number 1.4542) used in aerospace applications. This standard specifies steel bars that are air melted, solution treated, and precipitation treated, with cross-sections (a or D) less than or equal to 200 mm and a minimum ultimate tensile strength (Rm) of 930 MPa. The document, prepared by SIST and based on ASD-STAN recommendations, ensures high performance and consistency for metallic materials applied in aerospace environments, providing clarity on production, testing, and quality assurance.

Key Topics

• Material Specification:
  • Covers X5CrNiCu17-4 stainless steel (1.4542), also identified as 17-4 PH, known for its high strength and corrosion resistance.
  • Specifies air-melted production and subsequent heat treatment for optimal mechanical properties.
• Product Form:
  • Applies to round, square, or rectangular bars with dimensions up to 200 mm.
• Heat Treatment:
  • Bars are solution treated and precipitation hardened to achieve the required mechanical properties.
• Mechanical Properties:
  • Specifies a minimum ultimate tensile strength (Rm) of 930 MPa.
  • Requirements for proof stress, elongation, reduction of area, and hardness are also established.
• Quality Assurance:
  • Mandates rigorous non-destructive testing, including ultrasonic and visual inspection for internal and external imperfections.
  • Includes limits on δ-ferrite content and specifies grain size requirements.
• Testing Procedures:
  • References established test methods for mechanical properties and microstructure control.

Applications

Steel X5CrNiCu17-4 per SIST EN 3161:2026 is widely used in aerospace engineering where high strength, excellent toughness, and good corrosion resistance are essential. Typical applications include:

• Aircraft structural components subjected to high loads
• Engine parts and fasteners exposed to demanding conditions
• Landing gear and actuator mechanisms
• Aerospace tooling and ground support equipment

By adhering to this standard, manufacturers deliver consistent, high-quality bars meeting the stringent safety and performance requirements of the aerospace sector.

Related Standards

For comprehensive quality and compatibility, SIST EN 3161:2026 references and aligns with several other European standards for metallic materials:

• EN 2043 - Aerospace series: General requirements for semi-finished product qualification (excluding forgings and castings).
• EN 4436 - Aerospace series: Test methods for determination of δ-ferrite content.
• EN 4700-002 - Aerospace series: Technical specifications for steel and heat-resisting alloy wrought products, specifically for bars and sections.
• EN 4258 - General organization of standardization for metallic materials in aerospace applications.
• EN 4500 series - Guidelines for drafting and presenting material standards, including specific rules for steels.

Adopting SIST EN 3161:2026 ensures compliance with current European norms for aerospace stainless steel bars, supporting supply chain reliability and regulatory acceptance.

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By following SIST EN 3161:2026 and its related standards, organizations contribute to safer, more efficient aircraft manufacturing, maintenance, and operation, emphasizing the critical role of material standardization in aerospace quality assurance and innovation.

Standards Content (Sample)

SLOVENSKI STANDARD
oSIST prEN 3161:2024
01-september-2024
Nadomešča:
SIST EN 3161:2007
Aeronavtika - Jeklo X5CrNiCu17-4 (1.4542) - Taljeno - Topilno žarjeno in
izločevalno utrjeno - Palice - a ali D ≤ 200 mm - Rm ≥ 930 MPa
Aerospace series - Steel X5CrNiCu17-4 (1.4542) - Air melted - Solution treated and
precipitation treated - Bars - a or D ≤ 200 mm - Rm ≥ 930 MPa
Luft- und Raumfahrt - Stahl X5CrNiCu17-4 (1.4542) - Lufterschmolzen - Lösungsgeglüht
und ausgehärtet - Stangen - a oder D ≤ 200 mm - Rm ≥ 930 MPa
Série aérospatiale - Acier X5CrNiCu17-4 (1.4542) - Élaboré à l'air - Mis en solution et
précipité - Barres - a ou D ≤ 200 mm - Rm ≥ 930 MPa
Ta slovenski standard je istoveten z: prEN 3161
ICS:
49.025.10 Jekla Steels
oSIST prEN 3161:2024 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

oSIST prEN 3161:2024
oSIST prEN 3161:2024
DRAFT
EUROPEAN STANDARD
prEN 3161
NORME EUROPÉENNE
EUROPÄISCHE NORM
June 2024
ICS 49.025.10 Will supersede EN 3161:2007
English Version
Aerospace series - Steel X5CrNiCu17-4 (1.4542) - Air
melted - Solution treated and precipitation treated - Bars -
a or D  200 mm - Rm  930 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  930 MPa Stangen - a oder D  200 mm - Rm  930 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 3161:2024 E
worldwide for CEN national Members.

oSIST prEN 3161:2024
prEN 3161:2024 (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 3161:2024
prEN 3161:2024 (E)
European foreword
This document (prEN 3161:2024) 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 3161:2007.
The main changes with respect to the previous edition are as follows:
— update of the material designation;
— corr
...