SIST EN 3526:2024

Aerospace series - Steel 15CrMoV6 (1.7334) - Air melted - Hardened and tempered - Sheets and strips - 0,5 mm ≤ a ≤ 6 mm - 980 MPa ≤ Rm ≤ 1 180 MPa

This document specifies the requirements relating to:
Steel 15CrMoV6 (1.7334)
Air melted
Hardened and tempered
Sheet and strip
0,5 mm ≤ a ≤ 6 mm
980 MPa ≤ Rm ≤ 1 180 MPa
for aerospace applications.
W.nr: 1.7334.
ASD-STAN designation: FE-PL1505.

Luft- und Raumfahrt - Stahl 15CrMoV6 (1.7334) - Lufterschmolzen - Gehärtet und angelassen - Blech und Band - 0,5 mm ≤ a ≤ 6 mm - 980 MPa ≤ Rm ≤ 1 180 MPa

Dieses Dokument legt die Anforderungen an:
Stahl 15CrMoV6 (1.7334)
Lufterschmolzen
Gehärtet und angelassen
Bleche und Bänder
0,5 mm ≤ a ≤ 6 mm
980 MPa ≤ Rm ≤ 1 180 MPa
für Anwendungen in der Luft  und Raumfahrt fest.
Werkstoffnummer: 1.7334.
ASD STAN Bezeichnung: FE PL1505.

Série aérospatiale - Acier 15CrMoV6 (1.7334) - Élaboré à l'air - Trempé et revenu - Tôles et bandes - 0,5 mm ≤ a ≤ 6 mm - 980 MPa ≤ Rm ≤ 1 180 MPa

Le présent document spécifie les exigences relatives à :
Acier 15CrMoV6 (1.7334)
Élaboré à l'air
Trempé et revenu
Tôles et bandes
0,5 mm ≤ a ≤ 6 mm
980 MPa ≤ Rm ≤ 1 180 MPa
pour applications aérospatiales.
W.nr : 1.7334.
Désignation ASD-STAN : FE-PL1505.

Aeronavtika - Jeklo 15CrMoV6 (1.7334) - Taljeno - Utrjeno in mehko žarjeno - Pločevina in trakovi - 0,5 mm ≤ a ≤ 6 mm - 980 MPa ≤ Rm ≤ 1180 MPa

Ta dokument določa zahteve, ki se navezujejo na:
Jeklo 15CrMoV6 (1.7334)
taljeno,
utrjeno in mehko žarjeno,
Pločevina in trakovi
0,5 mm ≤ a ≤ 6 mm,
980 MPa ≤ Rm ≤ 1180 MPa
za uporabo v aeronavtiki.
Št. W.: 1.7334.
Oznaka ASD-STAN: FE-PL1505.

General Information

• Status: Published
• Public Enquiry End Date: 23-Jun-2021
• Publication Date: 15-Jan-2024
• ICS: 49.025.10 - Steels
• Technical Committee: I13 - Imaginarni 13
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 03-Jan-2024
• Due Date: 09-Mar-2024
• Completion Date: 16-Jan-2024
• Ref Project: EN 3526:2023 - Aerospace series - Steel 15CrMoV6 (1.7334) - Air melted - Hardened and tempered - Sheets and strips - 0,5 mm ≤ a ≤ 6 mm - 980 MPa ≤ Rm ≤ 1 180 MPa

Relations

• Revised: SIST EN 3526:2009 - Aerospace series - Steel FE-PL1505 (15CrMoV6) - Air melted - Hardened and tempered - Sheet and strip - 0,5 mm ≤ a ≤ 6 mm - 980 MPa ≤ Rm ≤ 1 180 MPa
• Effective Date: 19-Jan-2023

Overview

SIST EN 3526:2024 is a European standard published by CEN, specifying the technical requirements for aerospace-grade steel 15CrMoV6 (W.nr 1.7334). This steel is air melted, hardened, and tempered, available as sheets and strips with thicknesses ranging from 0.5 mm to 6 mm. The tensile strength (Rm) is regulated between 980 MPa and 1180 MPa, ensuring high mechanical performance suitable for aerospace applications. SIST EN 3526:2024 updates and supersedes the earlier 2007 edition, incorporating editorial refinements and clarifications to comply with the EN 4500 series standards.

The document serves the aerospace industry by defining material properties, chemical compositions, dimensions, and inspection methods, supporting manufacturers and purchasers in maintaining consistent, high-quality steel for critical aerospace components.

Key Topics

• Material Specification: Defines steel grade 15CrMoV6 (1.7334), characterized by:

  • Chemical composition limits including C (0.12–0.18%), Si, Mn, P, S, Cr (1.25–1.50%), Mo (0.80–1.00%), Ni (up to 0.30%), and Fe as base.
  • Production method: Air melted and rolled sheets and strips.
  • Delivery conditions: Hardened and tempered with specific heat treatment temperatures (955°C–995°C quenching; 615°C–655°C tempering).

• Mechanical Properties:

  • Tensile strength (Rm) range of 980 MPa to 1180 MPa.
  • Proof stress minimum of 780 MPa.
  • Hardness between HB ≤ 197 (softened) and 309 ≤ HV ≤ 371 (hardened and tempered).
  • Minimum elongation of 10% ensuring adequate ductility.

• Dimensional Criteria:

  • Thickness from 0.5 mm to 6 mm.
  • Test sampling direction along the longitudinal axis (LT).

• Inspection and Testing:

  • Visual testing (VT) for imperfections.
  • Micrographic examination for cleanliness and inclusion content according to EN 2951.
  • Qualification of semi-finished products in line with EN 2043.

• Standard Development:

  • Developed by ASD-STAN and approved by CEN with adherence required from member countries by June 2024.
  • Contains annexes detailing standard evolution and references to related aerospace standards.

Applications

SIST EN 3526:2024 steel grade 15CrMoV6 is tailored for aerospace industry use, particularly where high strength-to-weight ratios, durability, and reliability are critical. Common practical applications include:

• Aircraft structural components requiring robust and fatigue-resistant steel.
• Engine parts exposed to high mechanical stresses and temperature variation.
• Aerospace assemblies using thin sheets and strips where precise mechanical properties are essential.
• Manufacture of aerospace brackets, fittings, and mounts where hardened and tempered steel ensures longevity and safety.

This standard ensures consistency and reliability in material properties, supporting aerospace manufacturers in meeting demanding regulatory and safety requirements.

Related Standards

SIST EN 3526:2024 references and aligns with several other key aerospace standards to ensure comprehensive material qualification:

• EN 4700-001: Technical specification for plates, sheets, and strips of wrought steels and heat-resistant alloys, providing detailed testing and inspection frameworks.
• EN 2043: General requirements for semi-finished product qualification (excluding forgings and castings), critical for material certification.
• EN 2951: Micrographic determination for assessing non-metallic inclusions affecting material cleanliness and quality.
• EN 4258: Describes the overall organization of metallic aerospace material standards, providing context for EN 3526 within broader aerospace material regulation.
• EN 4500-005: Rules for drafting and presentation of material standards specifically for steels, applied in structuring EN 3526 content.

Adherence to SIST EN 3526:2024 in conjunction with these related standards helps aerospace industry professionals ensure conformity to stringent quality and performance benchmarks in steel materials.

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By following SIST EN 3526:2024, aerospace manufacturers and material suppliers can confidently achieve the high-grade mechanical properties and quality controls necessary for critical aerospace structural applications. This standard serves as a vital reference for engineers, quality assurance teams, and procurement managers focused on premium aerospace steel sheets and strips.

Standards Content (Sample)

SLOVENSKI STANDARD
01-februar-2024
Aeronavtika - Jeklo 15CrMoV6 (1.7334) - Taljeno - Utrjeno in mehko žarjeno -
Pločevina in trakovi - 0,5 mm ≤ a ≤ 6 mm - 980 MPa ≤ Rm ≤ 1180 MPa
Aerospace series - Steel 15CrMoV6 (1.7334) - Air melted - Hardened and tempered -
Sheets and strips - 0,5 mm ≤ a ≤ 6 mm - 980 MPa ≤ Rm ≤ 1 180 MPa
Luft- und Raumfahrt - Stahl 15CrMoV6 (1.7334) - Lufterschmolzen - Gehärtet und
angelassen - Blech und Band - 0,5 mm ≤ a ≤ 6 mm - 980 MPa ≤ Rm ≤ 1 180 MPa
Série aérospatiale - Acier 15CrMoV6 (1.7334) - Élaboré à l'air - Trempé et revenu -
Tôles et bandes - 0,5 mm ≤ a ≤ 6 mm - 980 MPa ≤ Rm ≤ 1 180 MPa
Ta slovenski standard je istoveten z: EN 3526:2023
ICS:
49.025.10 Jekla Steels
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN 3526
EUROPEAN STANDARD
NORME EUROPÉENNE
December 2023
EUROPÄISCHE NORM
ICS 49.025.10 Supersedes EN 3526:2007
English Version
Aerospace series - Steel 15CrMoV6 (1.7334) - Air melted -
Hardened and tempered - Sheets and strips - 0,5 mm  a 
6 mm - 980 MPa  Rm  1 180 MPa
Série aérospatiale - Acier 15CrMoV6 (1.7334) - Élaboré Luft- und Raumfahrt - Stahl 15CrMoV6 (1.7334) -
à l'air - Trempé et revenu - Tôles et bandes - 0,5 mm  Lufterschmolzen - Gehärtet und angelassen - Blech und
a  6 mm - 980 MPa  Rm  1 180 MPa Band - 0,5 mm  a  6 mm - 980 MPa  Rm  1 180 MPa
This European Standard was approved by CEN on 13 October 2023.

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
© 2023 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 3526:2023 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
Annex A (informative) Standard evolution form . 9
Bibliography . 10

European foreword
This document (EN 3526:2023) 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 2024, and conflicting national standards shall be withdrawn at
the latest by June 2024.
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 supersedes EN 3526:2007.
The main changes with respect to the previous edition are as follows:
— prEN 3526 (P3), 09/2019 — Editorial improvements and overall revision of the layout of Table 1 to
comply with EN 4500 series. Title EN: typo corrected, use of plural “sheets and strips”. Title DE:
typo corrected, use of plural “bleche” rather than “blech”. Title FR: use of plural “Tôles et bandes” to
match the English and the German titles. Table 1, line 44: the term in use is imperfections rather
than defects. Mention “visual testing – VT” was also added. Addition of Annex A (informative)
Standard evolution form.
According to the CEN-CENELEC Internal Regulations, the national standards organizations of the
fo
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