SIST EN 3163:2026
(Main)Aerospace series - Steel X5CrNiCu17-4 (1.4542) - Air melted - Softened - Forging stock - a or D ≤ 300 mm
Aerospace series - Steel X5CrNiCu17-4 (1.4542) - Air melted - Softened - Forging stock - a or D ≤ 300 mm
This document specifies the requirements relating to:
Steel X5CrNiCu17-4 (1.4542)
Air melted
Softened
Forging stock
a or D ≤ 300 mm
for aerospace applications.
W.nr: 1.4542.
ASD-STAN: FE-PM3801.
Luft- und Raumfahrt - Stahl X5CrNiCu17-4 (1.4542) - Lufterschmolzen - Geglüht - Schmiedevormaterial - a oder D ≤ 300 mm
Série aérospatiale - Acier X5CrNiCu17-4 (1.4542) - Élaboré à l'air - Adouci - Produits destinés à la forge - a ou D ≤ 300 mm
Le présent document spécifie les exigences relatives à :
Acier X5CrNiCu17-4 (1.4542)
Élaboré à l'air
Adouci
Produits destinés à la forge
a ou D ≤ 300 mm
pour les applications aérospatiales.
W.nr : 1.4542.
ASD-STAN : FE-PM3801.
Aeronavtika - Jeklo X5CrNiCu17-4 (1.4542) - Taljeno - Mehčano - Materiali za kovanje - a ali D ≤ 300 mm
General Information
- Status
- Published
- Public Enquiry End Date
- 04-Sep-2024
- Publication Date
- 08-Dec-2025
- Technical Committee
- I13 - Imaginarni 13
- Current Stage
- 6060 - National Implementation/Publication (Adopted Project)
- Start Date
- 04-Dec-2025
- Due Date
- 08-Feb-2026
- Completion Date
- 09-Dec-2025
Relations
- Effective Date
- 19-Jan-2023
Overview
EN 3163:2025 is a CEN aerospace-series standard that specifies material and inspection requirements for Steel X5CrNiCu17‑4 (1.4542) supplied as air‑melted, softened forging stock with cross‑section a or diameter D ≤ 300 mm. Designated by ASD‑STAN as FE‑PM3801 (W.nr 1.4542), this standard updates and supersedes EN 3163:2007 and is intended for aerospace applications where high‑strength, precipitation‑hardening stainless steel forgings are required.
Key topics and requirements
- Material designation: Steel X5CrNiCu17‑4 (1.4542), air melted, softened, forging stock (a or D ≤ 300 mm).
- Heat treatment: Reference sequence is solution treatment and precipitation treatment: 1 025–1 055 °C for ≥30 min (air cool or faster) → cool to ≤30 °C → 470–490 °C for ≥1 h (air cool or faster).
- Mechanical properties: Size‑dependent requirements are specified. Representative limits include proof stress Rp0.2 ≥ 1 170 MPa and tensile strength Rm 1 310–1 550 MPa; elongation and reduction‑of‑area minima vary by section size.
- Microstructure: δ‑ferrite content shall not exceed 5 %; microstructure verification follows EN 4436.
- Inspection and quality:
- Visual inspection and external imperfection criteria per EN 4700‑005.
- Ultrasonic testing (UT) for internal defects with acceptance criteria per EN 4050‑4 (Class 2).
- Inclusion content: Category 2 (EN 4700‑005).
- Product qualification to be agreed using EN 2043.
- Delivery condition code: U (softened).
- Dimensional limit: forgings/products with a or D ≤ 300 mm.
- Other controls: marking and dimensional inspections per EN 4700‑005.
Applications and who uses it
EN 3163:2025 is used by:
- Aerospace forging manufacturers producing semi‑finished forgings from X5CrNiCu17‑4 (1.4542).
- Material procurement, quality assurance, and inspection teams specifying and verifying aerospace forging stock.
- Design and manufacturing engineers who require standardized mechanical, metallurgical and inspection criteria for high‑strength stainless forging stock in aerospace components. Practical applications include the supply chain for forged aerospace parts where consistent chemical composition, heat treatment, mechanical performance and nondestructive testing are critical.
Related standards
- EN 4700‑005 - Technical specification for forging stocks (applied for dimensional, heat treatment and delivery requirements).
- EN 4050‑4 - Ultrasonic inspection acceptance criteria for bars, forging stock and forgings.
- EN 4436 - Determination of δ‑ferrite content.
- EN 2043 - Qualification programme for semi‑finished products.
- EN 4258 and EN 4500‑005 - Organization and drafting rules for aerospace metallic material standards.
For procurement, fabrication and certification of aerospace forgings, referencing EN 3163:2025 ensures consistent material, heat‑treatment and inspection practices for X5CrNiCu17‑4 (1.4542) forging stock.
Frequently Asked Questions
SIST EN 3163:2026 is a standard published by the Slovenian Institute for Standardization (SIST). Its full title is "Aerospace series - Steel X5CrNiCu17-4 (1.4542) - Air melted - Softened - Forging stock - a or D ≤ 300 mm". This standard covers: This document specifies the requirements relating to: Steel X5CrNiCu17-4 (1.4542) Air melted Softened Forging stock a or D ≤ 300 mm for aerospace applications. W.nr: 1.4542. ASD-STAN: FE-PM3801.
This document specifies the requirements relating to: Steel X5CrNiCu17-4 (1.4542) Air melted Softened Forging stock a or D ≤ 300 mm for aerospace applications. W.nr: 1.4542. ASD-STAN: FE-PM3801.
SIST EN 3163:2026 is classified under the following ICS (International Classification for Standards) categories: 49.025.10 - Steels. The ICS classification helps identify the subject area and facilitates finding related standards.
SIST EN 3163:2026 has the following relationships with other standards: It is inter standard links to SIST EN 3163:2007. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
You can purchase SIST EN 3163:2026 directly from iTeh Standards. The document is available in PDF format and is delivered instantly after payment. Add the standard to your cart and complete the secure checkout process. iTeh Standards is an authorized distributor of SIST standards.
Standards Content (Sample)
SLOVENSKI STANDARD
01-januar-2026
Aeronavtika - Jeklo X5CrNiCu17-4 (1.4542) - Taljeno - Mehčano - Materiali za
kovanje - a ali D ≤ 300 mm
Aerospace series - Steel X5CrNiCu17-4 (1.4542) - Air melted - Softened - Forging stock
- a or D ≤ 300 mm
Luft- und Raumfahrt - Stahl X5CrNiCu17-4 (1.4542) - Lufterschmolzen - Geglüht -
Schmiedevormaterial - a oder D ≤ 300 mm
Série aérospatiale - Acier X5CrNiCu17-4 (1.4542) - Élaboré à l'air - Adouci - Produits
destinés à la forge - a ou D ≤ 300 mm
Ta slovenski standard je istoveten z: EN 3163:2025
ICS:
49.025.10 Jekla Steels
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EN 3163
EUROPEAN STANDARD
NORME EUROPÉENNE
November 2025
EUROPÄISCHE NORM
ICS 49.025.10 Supersedes EN 3163:2007
English Version
Aerospace series - Steel X5CrNiCu17-4 (1.4542) - Air
melted - Softened - Forging stock - a or D 300 mm
Série aérospatiale - Acier X5CrNiCu17-4 (1.4542) - Luft- und Raumfahrt - Stahl X5CrNiCu17 4 (1.4542) -
Élaboré à l'air - Adouci - Produits destinés à la forge - a Lufterschmolzen - Weichgeglüht -
ou D 300 mm Schmiedevormaterial - a oder D 300 mm
This European Standard was approved by CEN on 19 October 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 3163:2025 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 3163:2025) 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 May 2026, and conflicting national standards shall be withdrawn at
the latest by May 2026.
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 3163:2007.
— update of the material designation;
— correction of the format of Table 1 to comply with the requirements of the EN 4500 series;
— update of Clause 2;
— addition of a bibliography.
According to the CEN-CENELEC Internal Regulations, the national standards organizations of the
following countries are bound to implement this document: Austria, Belgium, Bulgaria, Croatia, Cyprus,
Czech Republic, Denmark, Estonia, Finland, France, Germany, Gr
...
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