SIST EN 3479:2023

Aerospace series - Steel X5CrNiCu15-5 (1.4545) - Consumable electrode remelted - Solution treated and precipitation treated - Plates - 6 mm < a ≤ 20 mm - 1 070 MPa ≤ Rm ≤ 1 220 MPa

This document specifies the requirements relating to:
Steel X5CrNiCu15-5 (1.4545)
Consumable electrode remelted
Solution treated and precipitation treated
Plates
6 mm < a ≤ 20 mm
1 070 MPa ≤ Rm ≤ 1 220 MPa
for aerospace applications.

Luft- und Raumfahrt - Stahl X5CrNiCu15-5 (1.4545) - Mit selbstverzehrender Elektrode umgeschmolzen - Lösungsgeglüht und ausscheidungsgehärtet - Platten - 6 mm < a ≤ 20 mm - 1 070 MPa ≤ Rm ≤ 1 220 MPa

Dieses Dokument legt die Anforderungen an:
Stahl X5CrNiCu15 5 (1.4545)
Mit selbstverzehrender Elektrode umgeschmolzen
Lösungsgeglüht und ausscheidungsgehärtet
Platten
6 mm < a ≤ 20 mm
1 070 MPa ≤ Rm ≤ 1 220 MPa
für Anwendungen in der Luft- und Raumfahrt fest.

Série aérospatiale - Acier X5CrNiCu15-5 (1.4545) - Refondu à l'électrode consommable - Mis en solution et précipité - Plaques - 6 mm < a ≤ 20 mm - 1 070 MPa ≤ Rm ≤ 1 220 MPa

Le présent document spécifie les exigences relatives à :
Acier X5CrNiCu15-5 (1.4545)
Refondu à l'électrode consommable
Mis en solution et précipité
Plaques
6 mm < a ≤ 20 mm
1 070 MPa ≤ Rm ≤ 1 220 MPa
pour les applications aérospatiales.

Aeronavtika - Jeklo X5CrNiCu15-5 (1.4545) - Pretaljeno s taljivo elektrodo - Topilno žarjeno in izločevalno utrjeno - Plošče - 6 mm < a ≤ 20 mm - 1070 MPa ≤ Rm ≤ 1220 MPa

Ta dokument določa zahteve, ki se navezujejo na:
jeklo X5CrNiCu15-5 (1.4545),
pretaljeno s taljivo elektrodo,
topilno žarjeno in izločevalno utrjeno,
plošče,
6 mm < a ≤ 20 mm,
1070 MPa ≤ Rm ≤ 1220 MPa,
za uporabo v aeronavtiki.

General Information

• Status: Published
• Public Enquiry End Date: 30-Nov-2021
• Publication Date: 22-Jan-2023
• 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: 04-Jan-2023
• Due Date: 11-Mar-2023
• Completion Date: 23-Jan-2023
• Ref Project: EN 3479:2022 - Aerospace series - Steel X5CrNiCu15-5 (1.4545) - Consumable electrode remelted - Solution treated and precipitation treated - Plates - 6 mm < a ≤ 20 mm - 1 070 MPa ≤ Rm ≤ 1 220 MPa

Relations

• Replaces: SIST EN 3479:2009 - Aerospace series - Steel FE-PM1802 (X5CrNiCu15-5) - Consumable electrode remelted - Solution treated and precipitation treated - Plate - 6 mm < a ≤ 20 mm - 1 070 MPa ≤ Rm ≤ 1 220 MPa
• Effective Date: 28-Dec-2022
• Revised: SIST EN 3479:2009 - Aerospace series - Steel FE-PM1802 (X5CrNiCu15-5) - Consumable electrode remelted - Solution treated and precipitation treated - Plate - 6 mm < a ≤ 20 mm - 1 070 MPa ≤ Rm ≤ 1 220 MPa
• Effective Date: 15-Sep-2021

Overview

SIST EN 3479:2023 is a European aerospace standard specifying stringent requirements for steel grade X5CrNiCu15-5 (1.4545) used in aerospace plate components. This consumable electrode remelted steel is solution treated and precipitation treated, ensuring high strength and excellent mechanical properties. The standard covers plates with thickness greater than 6 mm and up to 20 mm, with ultimate tensile strength (Rm) ranging from 1,070 MPa to 1,220 MPa. Developed by CEN and ASD-STAN, SIST EN 3479:2023 supersedes earlier editions and aligns with rigorous aerospace industry needs for quality and performance.

Key Topics

• Material Specification
  • Grade: Steel X5CrNiCu15-5 (1.4545)
  • Production: Consumable electrode remelted process for superior purity and reliability
  • Heat Treatment: Solution treated at 1,025–1,055 °C followed by precipitation hardening at 535–565 °C for at least 4 hours
• Dimensions and Form
  • Plate thickness from >6 mm to 20 mm
  • Strict dimensional and microstructural quality controls to aerospace standards
• Mechanical Properties
  • Tensile strength (Rm): 1,070 MPa to 1,220 MPa
  • Proof stress (Rp0.2) ≥ 1,000 MPa
  • Elongation: Minimum 7% to 11% depending on treatment
  • Reduction of area: Minimum 27% to 45%
  • Hardness: Brinell hardness 321 ≤ HB ≤ 375
  • Impact strength requirements with tests conducted at ambient and −30 °C temperatures
• Testing and Inspection
  • Micrographic inclusion content assessed as Category 4 per EN 2951
  • Ultrasonic testing according to EN 4050-4 with Class 3 acceptance
  • Visual testing to detect external imperfections
• Quality and Compliance
  • Delivered according to EN 4700-001 technical specification for wrought products
  • Conformance with aerospace-specific material standards framework outlined by EN 4258 and EN 4500-005
  • Product qualification per EN 2043 agreed between manufacturer and purchaser

Applications

SIST EN 3479:2023 steel plates are designed specifically for aerospace structural and mechanical components where high strength, corrosion resistance, and precise mechanical properties are critical. The combination of consumable electrode remelting and heat treatment provides superior fracture toughness and fatigue resistance making the material ideal for:

• Aircraft structural frames and skins
• Aerospace mechanical parts requiring high strength-to-weight ratio
• Engine components subject to cyclic stresses and high-temperature environments
• Precision machined aerospace fittings and assemblies
• Defense aerospace equipment benefiting from enhanced material cleanliness and durability

Related Standards

• EN 4258 – General organization of aerospace metallic material standards
• EN 4700-001 – Technical specification for steel and heat-resistant alloy wrought products, including plates and strips
• EN 2951 – Micrographic determination of non-metallic inclusion content in aerospace materials
• EN 4050-4 – Ultrasonic inspection acceptance criteria for aerospace metals
• EN 2043 – Qualification requirements for aerospace semi-finished metallic products
• EN 4500-005 – Rules for drafting and presentation of aerospace steel material standards

This interconnected suite of standards ensures SIST EN 3479:2023 steel plates meet the demanding aerospace requirements for safety, durability, and performance, supporting global aerospace manufacturing and maintenance sectors. Proper adherence to these standards guarantees material reliability in the most critical aerospace applications.

Standards Content (Sample)

SLOVENSKI STANDARD
01-marec-2023
Nadomešča:
SIST EN 3479:2009
Aeronavtika - Jeklo X5CrNiCu15-5 (1.4545) - Pretaljeno s taljivo elektrodo - Topilno
žarjeno in izločevalno utrjeno - Plošče - 6 mm < a ≤ 20 mm - 1070 MPa ≤ Rm ≤ 1220
MPa
Aerospace series - Steel X5CrNiCu15-5 (1.4545) - Consumable electrode remelted -
Solution treated and precipitation treated - Plates - 6 mm < a ≤ 20 mm - 1 070 MPa ≤ Rm
≤ 1 220 MPa
Luft- und Raumfahrt - Stahl X5CrNiCu15-5 (1.4545) - Mit selbstverzehrender Elektrode
umgeschmolzen - Lösungsgeglüht und ausscheidungsgehärtet - Platten - 6 mm < a ≤ 20
mm - 1 070 MPa ≤ Rm ≤ 1 220 MPa
Série aérospatiale - Acier X5CrNiCu15-5 (1.4545) - Refondu à l'électrode consommable
- Mis en solution et précipité - Plaques - 6 mm < a ≤ 20 mm - 1 070 MPa ≤ Rm ≤ 1 220
MPa
Ta slovenski standard je istoveten z: EN 3479:2022
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 3479
EUROPEAN STANDARD
NORME EUROPÉENNE
December 2022
EUROPÄISCHE NORM
ICS 49.025.10 Supersedes EN 3479:2007
English Version
Aerospace series - Steel X5CrNiCu15-5 (1.4545) -
Consumable electrode remelted - Solution treated and
precipitation treated - Plates - 6 mm < a  20 mm - 1 070
MPa  Rm  1 220 MPa
Série aérospatiale - Acier X5CrNiCu15-5 (1.4545) - Luft- und Raumfahrt - Stahl X5CrNiCu15-5 (1.4545) -
Refondu à l'électrode consommable - Mis en solution et Mit selbstverzehrender Elektrode umgeschmolzen -
précipité - Plaques - 6 mm < a  20 mm - 1 070 MPa  Lösungsgeglüht und ausscheidungsgehärtet - Platten -
6 mm < a  20 mm - 1 070 MPa  Rm  1 220 MPa
Rm  1 220 MPa
This European Standard was approved by CEN on 29 August 2022.

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,
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COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

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© 2022 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 3479:2022 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 3479:2022) has been prepared by the Aerospace and Defence Industries
Association of Europe — Standardization (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 June 2023, and conflicting national standards shall be withdrawn at
the latest by June 2023.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent
rights.
This document supersedes EN 3479:2007.
According to the CEN-CENELE
...