EN 4904:2022
(Main)Aerospace series - Steel 36NiCrMo16 (1.6773) - 1 000 MPa ≤ Rm ≤ 1 200 MPa - Bars - 100 mm ≤ D ≤ 250 mm
Aerospace series - Steel 36NiCrMo16 (1.6773) - 1 000 MPa ≤ Rm ≤ 1 200 MPa - Bars - 100 mm ≤ D ≤ 250 mm
This document specifies the requirements relating to:
Steel 36NiCrMo16
1 000 MPa ≤ Rm ≤ 1 200 MPa
Bars
100 mm ≤ D ≤ 250 mm
for aerospace applications.
Luft- und Raumfahrt - Stahl 36NiCrMo16 (1.6773) - 1 000 MPa ≤ Rm ≤ 1 200 MPa - Stangen - 100 mm ≤ D ≤ 250 mm
Dieses Dokument legt die Anforderungen an:
Stahl 36NiCrMo16 (1.6773)
1 000 MPa ≤ Rm ≤ 1 200 MPa
Stangen
100 mm ≤ D ≤ 250 mm
für Anwendungen in der Luft- und Raumfahrt fest.
Série aérospatiale - Acier 36NiCrMo16 (1.6773) - 1 000 MPa ≤ Rm ≤ 1 200 MPa - Barres - 100 mm ≤ D ≤ 250 mm
Le présent document spécifie les exigences relatives à :
Acier 36NiCrMo16
1 000 MPa ≤ Rm ≤ 1 200 MPa
Barres
100 mm ≤ D ≤ 250 mm
pour les applications aérospatiales.
Aeronavtika - Jeklo 36NiCrMo16 (1.6773) - 1000 MPa ≤ Rm ≤ 1200 MPa - Palice - 100 mm ≤ D ≤ 250 mm
Ta dokument določa zahteve, ki se navezujejo na:
jeklo 36NiCrMo16,
1000 MPa ≤ Rm ≤ 1200 MPa,
palice,
100 mm ≤ D ≤ 250 mm,
za uporabo v aeronavtiki.
General Information
- Status
- Published
- Publication Date
- 20-Dec-2022
- 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
- 21-Dec-2022
- Completion Date
- 21-Dec-2022
Relations
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
Overview
EN 4904:2022 is a European Standard developed by CEN, specifying the requirements for steel 36NiCrMo16 (1.6773) bars with an ultimate tensile strength (Rm) between 1,000 MPa and 1,200 MPa, and diameters from 100 mm to 250 mm. This standard is crucial for the aerospace industry, ensuring that high-strength steel bars used in various structural and safety-critical applications meet strict performance, quality, and testing criteria. The standard aligns with the broader EN metallic material framework for aerospace, facilitating consistency across supply chains and engineering processes.
Key Topics
- Material Specification: Focused on steel 36NiCrMo16, identified by its specific chemical composition and mechanical properties.
- Mechanical Properties: The steel must have an ultimate tensile strength (Rm) within 1,000 MPa to 1,200 MPa, meeting aerospace structural requirements.
- Product Form: Applies exclusively to bars with diameters between 100 mm and 250 mm, targeting larger components in aerospace assemblies.
- Production and Treatment: Specifies conditions such as air melting, annealing, and hardening and tempering treatments to achieve the desired performance.
- Quality Control: Requires detailed inspection protocols, including ultrasonic and visual inspections, and the assessment of grain size, inclusions, and external imperfections.
Applications
The EN 4904:2022 standard is extensively used in the aerospace sector for components where high strength, reliability, and traceable quality are critical. Typical applications include:
- Aircraft Structural Components: Chosen for load-bearing bars in landing gear, engine mounts, and fuselage frameworks.
- Safety-Critical Parts: Used where consistent and verifiable mechanical properties are mandated to ensure operational safety.
- Space and Defense Systems: Suitable for both civil and defense aerospace programs requiring compliance with stringent material standards.
- Supplier Qualification: Enables manufacturers and buyers to specify and qualify steel bars with confidence, facilitating international trade in aerospace-grade materials.
The precise requirements outlined in EN 4904:2022 help minimize the risk of material failure, ensuring that only certified and rigorously tested steel bars are used for high-demand aerospace environments.
Related Standards
EN 4904:2022 supports and references several other key European standards:
- EN 2951: Aerospace series - Metallic materials - Micrographic determination of content of non-metallic inclusions.
- EN 4050-4: Aerospace series - Test method for metallic materials - Ultrasonic inspection of bars, plates, forging stock, and forgings - Part 4: Acceptance criteria.
- EN 4700-002: Aerospace series - Steel and heat resisting alloys - Wrought products - Technical specification - Part 002: Bars and sections.
- EN 4258: Aerospace series - Metallic materials - General organization of standardization.
- EN 4500-005: Aerospace series - Metallic materials - Rules for drafting and presentation of material standards - Specific rules for steels.
Practical Value
By conforming to EN 4904:2022, aerospace organizations and suppliers benefit from:
- Clear Procurement Specifications: Simplifies purchasing decisions and material traceability.
- International Recognition: Ensures compatibility with European and global aerospace standards.
- Consistent Product Quality: Promotes safety and reliability in demanding environments.
- Streamlined Certification: Supports qualification and audit documentation for regulatory compliance.
EN 4904:2022 is an essential reference for procurement, engineering, and quality assurance professionals in the aerospace industry seeking high-strength steel bars with reliable and verifiable properties.
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Frequently Asked Questions
EN 4904:2022 is a standard published by the European Committee for Standardization (CEN). Its full title is "Aerospace series - Steel 36NiCrMo16 (1.6773) - 1 000 MPa ≤ Rm ≤ 1 200 MPa - Bars - 100 mm ≤ D ≤ 250 mm". This standard covers: This document specifies the requirements relating to: Steel 36NiCrMo16 1 000 MPa ≤ Rm ≤ 1 200 MPa Bars 100 mm ≤ D ≤ 250 mm for aerospace applications.
This document specifies the requirements relating to: Steel 36NiCrMo16 1 000 MPa ≤ Rm ≤ 1 200 MPa Bars 100 mm ≤ D ≤ 250 mm for aerospace applications.
EN 4904:2022 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.
EN 4904:2022 has the following relationships with other standards: It is inter standard links to EN 4050-4:2012, EN 4700-002:2025, EN 2951:2019. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
EN 4904:2022 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.
Standards Content (Sample)
SLOVENSKI STANDARD
01-marec-2023
Aeronavtika - Jeklo 36NiCrMo16 (1.6773) - 1000 MPa ≤ Rm ≤ 1200 MPa - Palice - 100
mm ≤ D ≤ 250 mm
Aerospace series - Steel 36NiCrMo16 (1.6773) - 1 000 MPa ≤ Rm ≤ 1 200 MPa - Bars -
100 mm ≤ D ≤ 250 mm
Luft- und Raumfahrt - Stahl 36NiCrMo16 (1.6773) - 1 000 MPa ≤ Rm ≤ 1 200 MPa -
Stangen - 100 mm ≤ D ≤ 250 mm
Série aérospatiale - Acier 36NiCrMo16 (1.6773) - 1 000 MPa ≤ Rm ≤ 1 200 MPa - Barres
- 100 mm ≤ D ≤ 250 mm
Ta slovenski standard je istoveten z: EN 4904:2022
ICS:
49.025.10 Jekla Steels
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EN 4904
EUROPEAN STANDARD
NORME EUROPÉENNE
December 2022
EUROPÄISCHE NORM
ICS 49.025.10
English Version
Aerospace series - Steel 36NiCrMo16 (1.6773) - 1 000 MPa
≤ Rm ≤ 1 200 MPa - Bars - 100 mm ≤ D ≤ 250 mm
Série aérospatiale - Acier 36NiCrMo16 (1.6773) - 1 000 Luft- und Raumfahrt - Stahl 36NiCrMo16 (1.6773) - 1
MPa ≤ Rm ≤ 1 200 MPa - Barres - 100 mm ≤ D ≤ 250
000 MPa ≤ Rm ≤ 1 200 MPa - Stangen - 100 mm ≤ D ≤
mm 250 mm
This European Standard was approved by CEN on 2 October 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,
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 NORMALISATIO N
EUROPÄISCHES KOMITEE FÜR NORMUN G
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2022 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 4904:2022 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 4904:2022) 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 European Standard 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 shall not be held responsible for identifying any or all such patent rights.
According to the CEN-CENELEC Internal Regulations, the national standards organisations of the
following countries are
...
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