EN 3481:2019

Aerospace series - Steel X8CrNiTi18-10 (1.4878/1.4544) - Annealed - Reference heat treatment: softened - Hollow bars - 5 mm ≤ a ≤ 12 mm

This document specifies the requirements relating to:
Steel X8CrNiTi18-10 (1.4878/1.4544)
Annealed
Reference heat treatment: softened
Hollow bars
5 mm ≤ a ≤ 12 mm
for aerospace applications.

Luft- und Raumfahrt - Stahl X8CrNiTi18-10 (1.4878/1.4544) - Geglüht - Referenz-Wärmebehandlung: weichgeglüht - Profilröhren - 5 mm ≤ a ≤ 12 mm

Dieses Dokument legt die Anforderungen in Bezug auf:
Stahl X8CrNiTi18-10 (1.4878/1.4544)
Geglüht
Referenz-Wärmebehandlung: weichgeglüht
Profilröhren
5 mm ≤ a ≤ 12 mm
für Anwendungen in der Luft- und Raumfahrt fest.
ASD-STAN-Bezeichnung: FE-PA13.

Série aérospatiale - Acier X8CrNiTi18-10 (1.4878/1.4544) - Recuit - Traitement thermique de référence : adouci - Barres creuses - 5 mm ≤ a ≤ 12 mm

Le présent document spécifie les exigences relatives à :
Acier X8CrNiTi18-10 (1.4878/1.4544) Recuit Traitement thermique de référence : adouci Barres creuses 5 mm ≤ a ≤ 12 mm
pour applications aérospatiales.
Désignation ASD-STAN : FE-PA13.

Aeronavtika - Jeklo X8CrNiTi18-10 (1.4878/1.4544) - Žarjeno - Referenčna toplotna obdelava: popuščano - Votle palice - 5 mm ≤ a ≤ 12 mm

Ta standard določa zahteve, ki se navezujejo na: jeklo X8CrNiTi18-10 (1.4878/1.4544), žarjeno, referenčna toplotna obdelava: popuščano, votle palice 5 mm ≤ a ≤ 12 mm za uporabo v aeronavtiki. Oznaka ASD-STAN: FE-PA13.

General Information

• Status: Published
• Publication Date: 26-Nov-2019
• Withdrawal Date: 30-May-2020
• ICS: 49.025.10 - Steels
• Technical Committee: ASD-STAN - Aerospace
• Drafting Committee: ASD-STAN/D 4 - Metallic
• Current Stage: 6060 - Definitive text made available (DAV) - Publishing
• Start Date: 27-Nov-2019
• Completion Date: 27-Nov-2019
• Ref Project: SIST EN 3481:2020 - Aerospace series - Steel X8CrNiTi18-10 (1.4878/1.4544) - Annealed - Reference heat treatment: softened - Hollow bars - 5 mm ≤ a ≤ 12 mm

Overview

EN 3481:2019 is a European Standard published by CEN that specifies the requirements for steel X8CrNiTi18-10 (1.4878/1.4544) used in aerospace applications. This standard focuses on annealed, softened hollow bars with diameters ranging from 5 mm to 12 mm. Steel X8CrNiTi18-10 is an austenitic corrosion-resistant stainless steel widely utilized in aerospace due to its excellent weldability and mechanical properties. The standard ensures materials meet strict criteria for chemical composition, mechanical performance, and heat treatment, guaranteeing reliability and safety in aerospace manufacturing.

Key Topics

• Material Specification: Steel X8CrNiTi18-10, designated as FE-PA13 by ASD-STAN, with defined chemical composition limits including carbon, silicon, manganese, phosphorus, sulfur, chromium, nickel, and titanium.
• Form and Dimensions: Hollow bars with cross-sectional diameters from 5 mm up to 12 mm.
• Heat Treatment: Annealed condition with a reference heat treatment involving softening at temperatures between 1050 °C and 1100 °C by air or water quenching.
• Mechanical Properties:
  • Minimum proof stress (Rp0.2) of 210 MPa.
  • Tensile strength ranging from 500 to 700 MPa.
  • Minimum elongation of 40% over 50 mm test length.
  • Hardness not exceeding HB 197.
  • Impact strength minimum of 50 Joules.
• Corrosion Resistance: Austenitic stainless steel with enhanced resistance to intergranular corrosion, validated using acidified copper sulfate testing.
• Manufacturing Requirements: Air melted steel with requirements conforming to EN 4700-003 for aerospace tube products.

Applications

EN 3481:2019 steel X8CrNiTi18-10 hollow bars are engineered purely for aerospace use, where materials must withstand extreme mechanical stresses and corrosive environments while maintaining reliability. Typical applications include:

• Structural components within aircraft and spacecraft where weight, strength, and corrosion resistance are critical.
• Hydraulic and pneumatic tubing systems requiring durable, weldable steel.
• Precision aerospace parts produced as hollow bars for reduced weight without compromising strength.
• Components subjected to dynamic loads and high fatigue cycles, benefiting from the standardized mechanical properties guaranteed by EN 3481.

The strict compliance with this standard supports the aerospace industry’s demand for consistent quality and performance in metallic materials used in safety-critical environments.

Related Standards

• EN 4700-003: Aerospace series - Technical specifications for wrought steel and heat-resistant alloy tubes, which provides additional manufacturing and quality control requirements.
• EN 4258: Provides the general organization of aerospace metallic material standards, explaining the structure and interconnection of various EN standards related to aerospace materials.
• EN 4500-005: Specifies rules for drafting aerospace metallic material standards, ensuring consistent terminology and presentation.
• ASD-STAN Specifications: The Association for Standardization of Defence and Aerospace materials (ASD-STAN) designation FE-PA13 refers directly to the steel specified in EN 3481.

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EN 3481:2019 serves as an essential reference for aerospace manufacturers, procurement specialists, and quality assurance teams designing and validating steel components. By complying with this standard, aerospace producers ensure the use of high-quality, reliable hollow bar steel that meets international expectations for durability, corrosion resistance, and mechanical strength.

Standards Content (Sample)

SLOVENSKI STANDARD
01-marec-2020
Aeronavtika - Jeklo X8CrNiTi18-10 (1.4878/1.4544) - Žarjeno - Referenčna toplotna
obdelava: popuščano - Votle palice - 5 mm ≤ a ≤ 12 mm
Aerospace series - Steel X8CrNiTi18-10 (1.4878/1.4544) - Annealed - Reference heat
treatment: softened - Hollow bars - 5 mm ≤ a ≤ 12 mm
Luft- und Raumfahrt - Stahl X8CrNiTi18-10 (1.4878/1.4544) - Geglüht - Referenz-
Wärmebehandlung: weichgeglüht - Profilröhren - 5 mm ≤ a ≤ 12 mm
Série aérospatiale - Acier X8CrNiTi18-10 (1.4878/1.4544) - Recuit - Traitement
thermique de référence : adouci - Barres creuses - 5 mm ≤ a ≤ 12 mm
Ta slovenski standard je istoveten z: EN 3481:2019
ICS:
49.025.10 Jekla Steels
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN 3481
EUROPEAN STANDARD
NORME EUROPÉENNE
November 2019
EUROPÄISCHE NORM
ICS 49.025.10
English Version
Aerospace series - Steel X8CrNiTi18-10 (1.4878/1.4544) -
Annealed - Reference heat treatment: softened - Hollow
bars - 5 mm ≤ a ≤ 12 mm
Série aérospatiale - Acier X8CrNiTi18-10 Luft- und Raumfahrt - Stahl X8CrNiTi18-10
(1.4878/1.4544) - Recuit - Traitement thermique de (1.4878/1.4544) - Geglüht - Referenz-
Wärmebehandlung: weichgeglüht - Profilröhren - 5
référence : adouci - Barres creuses - 5 mm ≤ a ≤ 12 mm
mm ≤ a ≤ 12 mm
This European Standard was approved by CEN on 3 February 2019.

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, Turkey 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
© 2019 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 3481:2019 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 . 8

European foreword
This document (EN 3481:2019) 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 Standard has
received the approval of the National Associations and the Official Services of the member countries of
...