SIST EN 3490:2025
(Main)Aerospace series - Steel X15CrNi17-3 (1.4057) - Air melted - Hardened and tempered - Bars for machining - De ≤ 200 mm - 900 MPa ≤ Rm ≤ 1 100 MPa
Aerospace series - Steel X15CrNi17-3 (1.4057) - Air melted - Hardened and tempered - Bars for machining - De ≤ 200 mm - 900 MPa ≤ Rm ≤ 1 100 MPa
This document specifies the requirements relating to:
Steel X15CrNi17-3 (1.4057)
Air melted
Hardened and tempered
Bars for machining
De ≤ 200 mm
900 MPa ≤ Rm ≤ 1 100 MPa
for aerospace applications.
NOTE ASD-STAN designation: FE-PM3901
Material number: 1.4057
Luft- und Raumfahrt - Stahl X15CrNi17-3 (1.4057) - Lufterschmolzen - Gehärtet und angelassen - Stangen zur spanenden Bearbeitung - De ≤ 200 mm - 900 MPa ≤ Rm ≤ 1 100 MPa
Dieses Dokument legt die Anforderungen an:
Stahl X15CrNi17 3 (1.4057)
Lufterschmolzen
Gehärtet und angelassen
Stangen zur spanenden Bearbeitung
De ≤ 200 mm
900 MPa ≤ Rm ≤ 1 100 MPa
für Anwendungen in der Luft- und Raumfahrt fest.
ASD STAN Bezeichnung: FE PM3901
Werkstoffnummer: 1.4057
Série aérospatiale - Acier X15CrNi17-3 (1.4057) - Élaboré à l’air - Trempé et revenu - Barres pour usinage - De ≤ 200 mm - 900 MPa ≤ Rm ≤ 1 100 MPa
Le présent document spécifie les exigences relatives à :
Acier X15CrNi17-3 (1.4057)
Élaboré à l’air
Trempé et revenu
Barres pour usinage
De ≤ 200 mm
900 MPa ≤ Rm ≤ 1 100 MPa
pour les applications aérospatiales.
Désignation ASD-STAN : FE-PM3901
Numéro de matériau : 1.4057
Aeronavtika - Jeklo X15CrNi17-3 (1.4057) - Taljeno - Utrjeno in mehko žarjeno - Palice za obdelavo - De ≤ 200 mm - 900 MPa ≤ Rm ≤ 1 100 MPa
Ta dokument določa zahteve, ki se navezujejo na: jeklo X15CrNi17-3 (1.4057), taljeno, utrjeno in mehko žarjeno, palice za obdelavo, De ≤ 200 mm, 900 MPa ≤ Rm ≤ 1100 MPa za uporabo v aeronavtiki. OPOMBA: Oznaka ASD-STAN: FE-PM3901. Številka materiala: 1.4057.
General Information
Relations
Overview
SIST EN 3490:2025 is a European standard published by CEN that specifies detailed requirements for Steel X15CrNi17-3 (1.4057). This steel grade is air melted, hardened, and tempered to meet stringent mechanical properties ideal for aerospace applications. The standard governs the production and quality of bars intended for machining, with an outer diameter (De) up to 200 mm and a tensile strength (Rm) ranging between 900 and 1,100 MPa.
Designed for high-performance structural components in aerospace engineering, this standard ensures material consistency, reliability, and safety critical for aerospace manufacturing.
Key Topics
Material Specification
The standard covers Steel X15CrNi17-3 (1.4057), an alloy steel with the following characteristics:- Chemical composition controlled within specified limits (C: 0.12-0.20%, Cr: 15.0-17.0%, Ni: 2.0-3.0%, etc.)
- Air melting process to ensure purity and quality
- Hardened and tempered condition as per defined heat treatments (950°C to 1040°C, tempering between 585°C and 685°C)
Mechanical Properties
The bars must meet:- Tensile strength (Rm) from 900 MPa to 1,100 MPa
- Proof stress (Rp0.2) of minimum 700 MPa
- Minimum elongation of 12% and impact energy ≥ 20 J
- Hardness range between 262 HB and 331 HB
- Maximum delta ferrite content ≤ 5% for structural integrity
Dimensions and Form
- Bars with a maximum diameter of 200 mm
- Delivery in softened or hardened and tempered conditions suitable for machining
Testing and Quality Assurance
- Ultrasonic testing (UT) to detect internal imperfections
- Visual inspection for external imperfections
- Inclusion content and macrostructure evaluation
- Consistent dimensional and marking inspections
Applicable Norm References
SIST EN 3490:2025 refers to other aerospace series standards including EN 2043 for product qualification, EN 4050-1 for ultrasonic inspection, and EN 4700-002 for technical specification of steel bars and sections.
Applications
SIST EN 3490:2025 steel bars are primarily intended for aerospace structural components requiring high strength, toughness, and machinability. Typical uses include:
- Aircraft landing gear parts and frames
- Engine components requiring heat and wear resistance
- Precision machined aerospace fittings and fasteners
- High-stress mechanical parts in airframes and aerospace equipment
The steel’s combination of high tensile strength and controlled microstructure ensures reliability in demanding aerospace environments, including exposure to dynamic loads and temperature variations.
Related Standards
- EN 4258: General organization of aerospace metallic material standards
- EN 2043: Qualification for semi-finished aerospace metallic products
- EN 4050-1: Ultrasonic inspection methods for bars, plates, and forgings
- EN 4700-002: Technical specifications for steel bars and sections in aerospace
These complementary standards support the implementation of SIST EN 3490:2025 by providing testing methods, quality assurance protocols, and material classification frameworks aligned with aerospace industry requirements.
Keywords: SIST EN 3490:2025, Aerospace steel standard, Steel X15CrNi17-3, Hardened and tempered steel bars, Aerospace machining bars, High strength aerospace steel, Steel 1.4057 standard, Air melted steel bars, Aerospace material requirements, Tensile strength aerospace steel
Frequently Asked Questions
SIST EN 3490:2025 is a standard published by the Slovenian Institute for Standardization (SIST). Its full title is "Aerospace series - Steel X15CrNi17-3 (1.4057) - Air melted - Hardened and tempered - Bars for machining - De ≤ 200 mm - 900 MPa ≤ Rm ≤ 1 100 MPa". This standard covers: This document specifies the requirements relating to: Steel X15CrNi17-3 (1.4057) Air melted Hardened and tempered Bars for machining De ≤ 200 mm 900 MPa ≤ Rm ≤ 1 100 MPa for aerospace applications. NOTE ASD-STAN designation: FE-PM3901 Material number: 1.4057
This document specifies the requirements relating to: Steel X15CrNi17-3 (1.4057) Air melted Hardened and tempered Bars for machining De ≤ 200 mm 900 MPa ≤ Rm ≤ 1 100 MPa for aerospace applications. NOTE ASD-STAN designation: FE-PM3901 Material number: 1.4057
SIST EN 3490:2025 is classified under the following ICS (International Classification for Standards) categories: 49.025.10 - Steels; 77.140.60 - Steel bars and rods. The ICS classification helps identify the subject area and facilitates finding related standards.
SIST EN 3490:2025 has the following relationships with other standards: It is inter standard links to SIST EN 3490:2009. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
You can purchase SIST EN 3490:2025 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-november-2025
Aeronavtika - Jeklo X15CrNi17-3 (1.4057) - Taljeno - Utrjeno in mehko žarjeno -
Palice za obdelavo - De ≤ 200 mm - 900 MPa ≤ Rm ≤ 1 100 MPa
Aerospace series - Steel X15CrNi17-3 (1.4057) - Air melted - Hardened and tempered -
Bars for machining - De ≤ 200 mm - 900 MPa ≤ Rm ≤ 1 100 MPa
Luft- und Raumfahrt - Stahl X15CrNi17-3 (1.4057) - Lufterschmolzen - Gehärtet und
angelassen - Stangen zur spanenden Bearbeitung - De ≤ 200 mm - 900 MPa ≤ Rm ≤ 1
100 MPa
Série aérospatiale - Acier X15CrNi17-3 (1.4057) - Élaboré à l’air - Trempé et revenu -
Barres pour usinage - De ≤ 200 mm - 900 MPa ≤ Rm ≤ 1 100 MPa
Ta slovenski standard je istoveten z: EN 3490:2025
ICS:
49.025.10 Jekla Steels
77.140.60 Jeklene palice in drogovi Steel bars and rods
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EN 3490
EUROPEAN STANDARD
NORME EUROPÉENNE
September 2025
EUROPÄISCHE NORM
ICS 49.025.10 Supersedes EN 3490:2007
English Version
Aerospace series - Steel X15CrNi17-3 (1.4057) - Air melted
- Hardened and tempered - Bars for machining - De 200
mm - 900 MPa Rm 1 100 MPa
Série aérospatiale - Acier X15CrNi17-3 (1.4057) - Luft- und Raumfahrt - Stahl X15CrNi17-3 (1.4057) -
Élaboré à l'air - Trempé et revenu - Barres pour Lufterschmolzen - Gehärtet und angelassen - Stangen
usinage - De 200 mm - 900 MPa Rm 1 100 MPa zur spanenden Bearbeitung - De 200 mm - 900 MPa
Rm 1 100 MPa
This European Standard was approved by CEN on 27 July 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 3490:2025 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 3490:2025) 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 March 2026, and conflicting national standards shall be withdrawn
at the latest by March 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 will supersede EN 3490:2007.
— EN 3490 (P2), 03/2007 – Update of the material designation, correction of the format of Table 1 to
comply with the requirem
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.
Loading comments...