EN 3525:2023

Aerospace series - Steel 15CrMoV6 (1.7334) - Air melted - Hardened and tempered - Plates - 6 mm ≤ a ≤ 20 mm - 1 080 MPa ≤ Rm ≤ 1 280 MPa

This document specifies the requirements relating to:
Steel 15CrMoV6 (1.7334)
Air melted
Hardened and tempered
Plates
6 mm ≤ a ≤ 20 mm
1 080 MPa ≤ Rm ≤ 1 280 MPa
for aerospace applications.
W.nr: 1.7334.
ASD-STAN designation: FE-PL1505.

Luft- und Raumfahrt - Stahl 15CrMoV6 (1.7334) - Lufterschmolzen - Gehärtet und angelassen - Platten - 6 mm ≤ a ≤ 20 mm - 1 080 MPa ≤ Rm ≤ 1 280 MPa

Dieses Dokument legt die Anforderungen an:
Stahl 15CrMoV6 (1.7334)
Lufterschmolzen
Gehärtet und angelassen
Platten
6 mm ≤ a ≤ 20 mm
1 080 MPa ≤ Rm ≤ 1 280 MPa
für Anwendungen in der Luft  und Raumfahrt fest.
W.nr: 1.7334.
ASD STAN Bezeichnung: FE PL1505.

Série aérospatiale - Acier 15CrMoV6 (1.7334) - Élaboré à l'air - Trempé et revenu - Plaques - 6 mm ≤ a ≤ 20 mm - 1 080 MPa ≤ Rm ≤ 1 280 MPa

Le présent document spécifie les exigences relatives à :
Acier 15CrMoV6 (1.7334)
Élaboré à l'air
Trempé et revenu
Plaques
6 mm ≤ a ≤ 20 mm
1 080 MPa ≤ Rm ≤ 1 280 MPa
pour applications aérospatiales.
W.nr : 1.7334.
Désignation ASD-STAN : FE-PL1505.

Aeronavtika - Jeklo 15CrMoV6 (1.7334) - Taljeno - Utrjeno in mehko žarjeno - Plošče - 6 mm ≤ a ≤ 20 mm - 1080 MPa ≤ Rm ≤ 1280 MPa

Ta dokument določa zahteve, ki se navezujejo na:
Jeklo 15CrMoV6 (1.7334)
taljeno,
utrjeno in mehko žarjeno,
plošče,
6 mm ≤ a ≤ 20 mm,
1080 MPa ≤ Rm ≤ 1280 MPa
za uporabo v aeronavtiki.
Št. W.: 1.7334.
Oznaka ASD-STAN: FE-PL1505.

General Information

• Status: Published
• Publication Date: 19-Dec-2023
• ICS: 49.025.10 - Steels
• 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: 20-Dec-2023
• Completion Date: 20-Dec-2023
• Ref Project: SIST EN 3525:2024 - Aerospace series - Steel 15CrMoV6 (1.7334) - Air melted - Hardened and tempered - Plates - 6 mm ≤ a ≤ 20 mm - 1 080 MPa ≤ Rm ≤ 1 280 MPa

Relations

• Replaces: EN 3525:2007 - Aerospace series - Steel FE-PL1505 (15CrMoV6) - Air melted - Hardened and tempered - Plate - 6 mm < a ≤ 20 mm - 1 080 MPa ≤ Rm ≤ 1 280 MPa
• Effective Date: 18-Jan-2023

Overview

EN 3525:2023 specifies requirements for aerospace-grade steel 15CrMoV6 (W.nr 1.7334, ASD‑STAN designation FE‑PL1505) in plate form. Published by CEN/ASD‑STAN in December 2023 (superseding EN 3525:2007), the standard covers air‑melted, hardened and tempered plates with thicknesses 6 mm ≤ a ≤ 20 mm and tensile strength 1 080 MPa ≤ Rm ≤ 1 280 MPa. It defines chemical composition, heat treatment, mechanical properties, inspection and qualification rules intended for aerospace applications.

Key topics and requirements

• Material designation: Steel 15CrMoV6 (1.7334), Fe base.
• Chemical composition (typical limits):
  • Carbon (C): 0.12–0.18 %
  • Silicon (Si): ≤ 0.20 %
  • Manganese (Mn): 0.80–1.10 %
  • Phosphorus (P): ≤ 0.020 %
  • Sulfur (S): ≤ 0.015 %
  • Chromium (Cr): 1.25–1.50 %
  • Molybdenum (Mo): 0.80–1.00 %
  • Nickel (Ni): 0.20–0.30 %
• Heat treatment: Austenitizing at 955 °C to 995 °C (OQ or AC) and tempering at 595 °C to 645 °C (AC) - delivery condition codes A (softened) or U (hardened and tempered).
• Mechanical properties and testing:
  • Tensile strength Rm: 1 080–1 280 MPa
  • Proof (0.2 % offset) Rp0.2: ≥ 930 MPa
  • Elongation A: ≥ 10 %
  • Hardness: approx. 335–382 HV (321–380 HB) in the hardened condition
  • Test direction: longitudinal/transverse as specified (LT)
  • Test temperature: ambient
• Inspection and quality: Visual testing for external imperfections; ultrasonic testing (UT) for internal imperfections (Class 2). Cleanliness/inclusion per EN 2951; decarburization and dimensional/marking inspections per EN 4700‑001.
• Product qualification: Conformity and qualification testing per EN 2043; qualification program to be agreed between manufacturer and purchaser.

Applications and users

EN 3525:2023 is intended for procurement, design, manufacturing and quality assurance of high‑strength aerospace steel plates. Typical users include:

• Aerospace material engineers and specifiers
• Structural designers and manufacturers of aircraft components
• Metallurgists and heat‑treat shops
• Quality, inspection and procurement teams in the aviation supply chain

The standard helps ensure consistent chemical, mechanical and inspection performance for plate material selected for demanding aerospace structural applications.

Related standards

• EN 4700‑001 - Steel and heat‑resisting alloys - Plate, sheet and strip technical specification
• EN 2043 - General requirements for semi‑finished product qualification
• EN 2951 - Micrographic determination of non‑metallic inclusions
• EN 4258, EN 4500‑005 - Series organization and drafting rules for aerospace metallic materials

Keywords: EN 3525:2023, 15CrMoV6, aerospace steel, hardened and tempered plates, air melted, high tensile strength, EN 4700‑001, EN 2043, FE‑PL1505.

Standards Content (Sample)

SLOVENSKI STANDARD
01-februar-2024
Aeronavtika - Jeklo 15CrMoV6 (1.7334) - Taljeno - Utrjeno in mehko žarjeno -
Plošče - 6 mm ≤ a ≤ 20 mm - 1080 MPa ≤ Rm ≤ 1280 MPa
Aerospace series - Steel 15CrMoV6 (1.7334) - Air melted - Hardened and tempered -
Plates - 6 mm ≤ a ≤ 20 mm - 1 080 MPa ≤ Rm ≤ 1 280 MPa
Luft- und Raumfahrt - Stahl 15CrMoV6 (1.7334) - Lufterschmolzen - Gehärtet und
angelassen - Platten - 6 mm ≤ a ≤ 20 mm - 1 080 MPa ≤ Rm ≤ 1 280 MPa
Série aérospatiale - Acier 15CrMoV6 (1.7334) - Élaboré à l'air - Trempé et revenu -
Plaques - 6 mm ≤ a ≤ 20 mm - 1 080 MPa ≤ Rm ≤ 1 280 MPa
Ta slovenski standard je istoveten z: EN 3525:2023
ICS:
49.025.10 Jekla Steels
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN 3525
EUROPEAN STANDARD
NORME EUROPÉENNE
December 2023
EUROPÄISCHE NORM
ICS 49.025.10 Supersedes EN 3525:2007
English Version
Aerospace series - Steel 15CrMoV6 (1.7334) - Air melted -
Hardened and tempered - Plates - 6 mm  a  20 mm - 1
080 MPa  Rm  1 280 MPa
Série aérospatiale - Acier 15CrMoV6 (1.7334) - Élaboré Luft- und Raumfahrt - Stahl 15CrMoV6 (1.7334) -
à l'air - Trempé et revenu - Plaques - 6 mm  a  20 mm Lufterschmolzen - Gehärtet und angelassen - Platten - 6
- 1 080 MPa  Rm  1 280 MPa mm  a  20 mm - 1 080 MPa  Rm  1 280 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 3525:2023 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 3525:2023) 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 3525:2007.
The main changes with respect to the previous edition are as follows:
— prEN 3525 (P3), 09/2019 — Overall revision of the layout of Table 1 to comply with EN 4500
series. Table 1, line 44: the term in use is imperfections rather than defects. Then mention “visual
testing – VT” was also added. Table 1, line 61: mention “visual testing – VT” replaced with
“ultrasonic testing – UT”. Addition of Annex A (information) standard evolution form.
According to the CEN-CENELEC Internal Regulations, the national standards organizations of the
following countries are bound to implement this document: Austria, Belgium
...