EN 4216:2026
(Main)Aerospace series - Steel GX5CrNiCuNb16-4 (1.4525) - Homogenized, solution treated and precipitation hardened - Investment casting - De ≤ 50 mm - Rm ≥ 900 MPa
Aerospace series - Steel GX5CrNiCuNb16-4 (1.4525) - Homogenized, solution treated and precipitation hardened - Investment casting - De ≤ 50 mm - Rm ≥ 900 MPa
This document specifies the requirements relating to:
Steel GX5CrNiCuNb16-4 (1.4525)
Homogenized
Solution treated and precipitation hardened
Investment casting
De ≤ 50 mm
Rm ≥ 900 MPa
for aerospace applications.
ASD-STAN designation FE-CM3801
Material number 1.4525
Luft- und Raumfahrt - Stahl GX5CrNiCuNb16-4 (1.4525) - Diffusionsgeglüht, lösungsgeglüht und ausscheidungsgehärtet - Feingussstücke - De ≤ 50 mm - Rm ≥ 900 MPa
Dieses Dokument legt die Anforderungen an:
Stahl GX5CrNiCuNb16 4 (1.4525)
Diffusionsgeglüht
Lösungsgeglüht und ausscheidungsgehärtet
Feingussstücke
De ≤ 50 mm
Rm ≥ 900 MPa
für Anwendungen in der Luft und Raumfahrt fest.
ASD-STAN-Bezeichnung: FE-CM3801
Werkstoffnummer: 1.4525
Série aérospatiale - Acier GX5CrNiCuNb16-4 (1.4525) - Homogénéisé - Mis en solution et durci par précipitation - Moulage à la cire perdue - De ≤ 50 mm - Rm ≥ 900 MPa
Le présent document spécifie les exigences relatives à :
Série aérospatiale - Acier GX5CrNiCuNb16-4 (1.4525)
Homogénéisé
Mis en solution et durci par précipitation
Pièces moulées à la cire perdue
De ≤ 50 mm
Rm ≥ 900 MPa
pour les applications aérospatiales.
Désignation ASD-STAN : FE-CM3801
Numéro de matériau : 1.4525
Aeronavtika - Jeklo GX5CrNiCuNb16-4 (1.4525) - Homogenizirani, obdelani v raztopini in utrjeni - Precizijsko litje - De ≤ 50 mm - Rm ≥ 900 MPa
General Information
- Status
- Published
- Publication Date
- 14-Apr-2026
- 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
- 15-Apr-2026
- Completion Date
- 15-Apr-2026
Relations
- Effective Date
- 19-Jan-2023
Overview
EN 4216:2026 is a European Standard developed by CEN that specifies the requirements for the aerospace-grade steel alloy GX5CrNiCuNb16-4 (material number 1.4525). This standard covers homogenized, solution treated, and precipitation hardened investment castings with a maximum outside diameter or thickness (De) of up to 50 mm and a required minimum tensile strength (Rm) of 900 MPa. EN 4216:2026 is designed for aerospace applications, aligning with the ASD-STAN designation FE-CM3801, and constitutes an essential reference for manufacturers, suppliers, and quality assurance professionals in the aerospace supply chain.
Key Topics
Steel Designation and Composition
The standard clearly defines the chemical composition and method of production for GX5CrNiCuNb16-4, ensuring consistency and performance across suppliers and manufacturers.Heat Treatment and Mechanical Properties
It covers requirements for homogenization, solution treatment, and precipitation hardening, with focus on achieving mechanical properties such as minimum tensile strength (Rm ≥ 900 MPa) and proof stress.Dimensional and Qualitative Limits
Maximum allowable dimensions (De ≤ 50 mm) and essential qualities such as microstructure, ferrite content, and hardness are established to ensure reliability in aerospace environments.Production Controls and Testing
The document references necessary test methods and inspections, including visual and ultrasonic testing, microstructure analysis, and marking inspection, helping to guarantee compliance and traceability.
Applications
EN 4216:2026 is intended primarily for the aerospace sector, addressing demanding requirements for strength, toughness, and consistency in high-performance steel castings. Typical applications include:
Aerospace Structural Components
Investment cast parts such as brackets, supports, housings, and structural fittings where lightweight strength and reliability are crucial for safety and performance.Engine Components
Use in engine casings or accessories requiring dimensional stability and high mechanical properties at various service temperatures.Landing Gear and Actuation Systems
Parts experiencing high cyclic loads and exposure to harsh operational conditions, where precise chemical and mechanical standards are necessary.
The standard’s guidance ensures that components produced under EN 4216:2026 are suitable for critical aerospace applications, contributing to aircraft integrity and safety.
Related Standards
To ensure full compliance and obtain supporting technical information, the following related standards are referenced within EN 4216:2026:
- EN 2103-3: Aerospace series - Steel, nickel base and cobalt base alloy remelting stock and castings - Technical specifications - Part 3: Pre-production and production castings
- EN 3484: Aerospace series - Steel X5CrNiCuNb16-4 - As cast - Reference heat treatment
- EN 4436: Aerospace series - Steel - Test methods - Determination of δ ferrite content
- EN 4258: General organization of metallic materials standardization for aerospace purposes
- EN 4500-005: Rules for drafting and presentation of metallic material standards - steels
Industry professionals looking for high-strength steel investment castings for aerospace projects will find EN 4216:2026 and its referenced documents to be key resources for material selection, process control, and quality assurance.
Keywords: aerospace steel standard, EN 4216:2026, GX5CrNiCuNb16-4, 1.4525, investment casting, precipitation hardened steel, homogenized steel, aerospace quality standards, high-strength steel, mechanical properties, CEN standards.
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Frequently Asked Questions
EN 4216:2026 is a draft published by the European Committee for Standardization (CEN). Its full title is "Aerospace series - Steel GX5CrNiCuNb16-4 (1.4525) - Homogenized, solution treated and precipitation hardened - Investment casting - De ≤ 50 mm - Rm ≥ 900 MPa". This standard covers: This document specifies the requirements relating to: Steel GX5CrNiCuNb16-4 (1.4525) Homogenized Solution treated and precipitation hardened Investment casting De ≤ 50 mm Rm ≥ 900 MPa for aerospace applications. ASD-STAN designation FE-CM3801 Material number 1.4525
This document specifies the requirements relating to: Steel GX5CrNiCuNb16-4 (1.4525) Homogenized Solution treated and precipitation hardened Investment casting De ≤ 50 mm Rm ≥ 900 MPa for aerospace applications. ASD-STAN designation FE-CM3801 Material number 1.4525
EN 4216:2026 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.
EN 4216:2026 has the following relationships with other standards: It is inter standard links to EN 4216:2007. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
EN 4216:2026 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
oSIST prEN 4216:2025
01-junij-2025
Aeronavtika - Jeklo GX5CrNiCuNb16-4 (1.4525) - Homogenizirani, obdelani v
raztopini in utrjeni - Precizijsko litje - De ≤ 50 mm - Rm ≥ 900 MPa
Aerospace series - Steel GX5CrNiCuNb16-4 (1.4525) - Homogenized, solution treated
and precipitation hardened - Investment casting - De ≤ 50 mm - Rm ≥ 900 MPa
Luft- und Raumfahrt - Stahl GX5CrNiCuNb16-4 (1.4525) - Diffusionsgeglüht,
lösungsgeglüht und ausscheidungsgehärtet - Feingussstücke - De ≤ 50 mm - Rm ≥ 900
MPa
Série aérospatiale - Acier GX5CrNiCuNb16-4 (1.4525) - Homogénéisé, mis en solution
et durci par précipitation - Pièces moulées à la cire perdue - De ≤ 50 mm - Rm ≥ 900
MPa
Ta slovenski standard je istoveten z: prEN 4216
ICS:
49.025.10 Jekla Steels
oSIST prEN 4216:2025 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
oSIST prEN 4216:2025
oSIST prEN 4216:2025
DRAFT
EUROPEAN STANDARD
prEN 4216
NORME EUROPÉENNE
EUROPÄISCHE NORM
April 2025
ICS 49.025.10 Will supersede EN 4216:2007
English Version
Aerospace series - Steel GX5CrNiCuNb16-4 (1.4525) -
Homogenized, solution treated and precipitation hardened
- Investment casting - D ≤ 50 mm - R ≥ 900 MPa
e m
Série aérospatiale - Acier GX5CrNiCuNb16-4 (1.4525) - Luft- und Raumfahrt - Stahl GX5CrNiCuNb16-4
Homogénéisé, mis en solution et durci par (1.4525) - Diffusionsgeglüht, lösungsgeglüht und
précipitation - Pièces moulées à la cire perdue - D ≤ ausscheidungsgehärtet - Feingussstücke - D ≤ 50 mm -
e e
50 mm - R ≥ 900 MPa R ≥ 900 MPa
m m
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 NORMALISATIO N
EUROPÄISCHES KOMITEE FÜR NORMUN G
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. prEN 4216:2025 E
worldwide for CEN national Members.
oSIST prEN 4216:2025
prEN 4216:2025 (E)
Contents Page
European foreword . 3
Introduction . 4
1 Scope . 4
2 Normative references . 4
3 Terms and definitions . 4
4 Requirements . 4
Bibliography . 8
oSIST prEN 4216:2025
prEN 4216:2025 (E)
European foreword
This document (prEN 4216:2025) 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
...
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