EN 3523:2024

Aerospace series - Steel 15CrMoV6 (1.7334) - Air melted - Hardened and tempered - Bars for machining - De ≤ 100 mm - 1 080 MPa ≤ Rm ≤ 1 280 MPa

This document specifies the requirements relating to:
Steel 15CrMoV6 (1.7334)
Air melted
Hardened and tempered
Bars for machining
De ≤ 100 mm
1 080 MPa ≤ Rm ≤ 1 250 MPa
for aerospace applications.
W.nr: 1.7334.
ASD-STAN designation: FE-PL1505.

Luft- und Raumfahrt - Stahl 15CrMoV6 (1.7334) - Lufterschmolzen - Gehärtet und angelassen - Stange zur spanenden Bearbeitung - De ≤ 100 mm - 1 080 MPa ≤ Rm ≤ 1 280 MPa

Dieses Dokument legt die Anforderungen an:
Stahl 15CrMoV6 (1.7334)
Lufterschmolzen
Gehärtet und angelassen
Stangen zur spanenden Bearbeitung
De ≤ 100 mm
1 080 MPa ≤ Rm ≤ 1 250 MPaN1
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 - Barres pour usinage - De ≤ 100 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
Barres pour usinage
De ≤ 100 mm
1 080 MPa ≤ Rm ≤ 1 250 MPa
pour les applications aérospatiales.
W.nr : 1.7334.
Désignation ASD-STAN : FE-PL1505.

Aeronavtika - Jeklo 15CrMoV6 (1.7334) - Taljeno - Utrjeno in mehko žarjeno - Palice za obdelavo - De ≤ 100 mm - 1080 MPa ≤ Rm ≤ 1280 MPa

Ta dokument določa zahteve, ki se navezujejo na:
jeklo 15CrMoV6 (1.7334),
taljeno na zraku,
utrjeno in mehko žarjeno,
palice za obdelavo,
De ≤ 100 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: 17-Dec-2024
• 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: 18-Dec-2024
• Completion Date: 18-Dec-2024
• Ref Project: SIST EN 3523:2025 - Aerospace series - Steel 15CrMoV6 (1.7334) - Air melted - Hardened and tempered - Bar for machining - De ≤ 100 mm - 1 080 MPa ≤ Rm ≤ 1 280 MPa

Relations

• Replaces: EN 3523:2007 - Aerospace series - Steel FE-PL1505 (15CrMoV6) - Air melted - Hardened and tempered - Bar for machining - De ≤ 100 mm - 1 080 MPa ≤ Rm ≤ 1 280 MPa
• Effective Date: 18-Jan-2023

Overview

EN 3523:2024 is a CEN / ASD‑STAN aerospace material standard that defines the specification for steel 15CrMoV6 (W.nr. 1.7334) in the form of air‑melted, hardened and tempered bars for machining with an external diameter (De) ≤ 100 mm. It is intended for high‑strength aerospace applications and is also designated by ASD‑STAN as FE‑PL1505. Key mechanical property limits include a tensile strength Rm between 1 080 MPa and 1 280 MPa and minimum proof stress Rp0,2 ≥ 930 MPa.

Key topics and technical requirements

• Material and chemistry
  • Steel grade: 15CrMoV6 (1.7334); composition ranges specified for C, Si, Mn, P, S, Cr, Mo, V and Fe (balance).
• Form and size
  • Bars for machining, maximum diameter De ≤ 100 mm.
• Heat treatment and delivery conditions
  • Delivery states: softened (A) and hardened & tempered (U).
  • Heat treatment specified as: austenitizing 955–995 °C, quench (WQ or OQ), and tempering 595–645 °C.
• Mechanical properties
  • Tensile strength (Rm): 1 080–1 280 MPa
  • Proof stress (Rp0,2): ≥ 930 MPa
  • Elongation A: ≥ 10%
  • Hardness: softened HB ≤ 235; hardened HB 321–380.
  • Impact toughness: KV ≥ 30 J (notch direction L).
• Testing, inspection and quality
  • Hardenability (Jominy) requirements (EN ISO 642 referenced).
  • Non‑metallic inclusion limits (EN 2951) - Category 1.
  • Visual (VT) and ultrasonic testing (UT) for imperfections (EN 4700‑002).
  • Grain size G ≥ 5; capability clause applies for product qualification.
• Marking and dimensional inspection per EN 4700‑002.

Applications and users

EN 3523:2024 is used by:

• Aerospace OEMs and tier‑1 suppliers specifying high‑strength machined components where controlled toughness, hardenability and traceable chemistry are required.
• Material procurement and specification engineers selecting bars for machining for structural or mechanically loaded aerospace parts.
• Manufacturers and heat‑treatment shops producing quenched & tempered bars to aerospace quality and inspection regimes.
• Inspection laboratories performing mechanical, metallographic, UT and VT tests for conformity.

Typical practical uses include machined parts for aircraft systems and structures where high tensile strength, controlled hardenability and repeatable heat treatment are critical.

Related standards

• EN 4700‑002 - technical specification for steel wrought products (bars).
• EN ISO 642 - Jominy hardenability test.
• EN 2951 - micrographic determination of non‑metallic inclusions.
• EN 2043 - qualification of semi‑finished products for aerospace.
• EN 4258 / EN 4500‑005 - organization and drafting rules for aerospace metallic material standards.

Keywords: EN 3523:2024, 15CrMoV6, 1.7334, aerospace steel, hardened and tempered bars, bars for machining, Rm 1080‑1280 MPa, Jominy hardenability, EN 4700‑002.

Standards Content (Sample)

SLOVENSKI STANDARD
01-marec-2025
Aeronavtika - Jeklo 15CrMoV6 (1.7334) - Taljeno - Utrjeno in mehko žarjeno - Palice
za obdelavo - De ≤ 100 mm - 1080 MPa ≤ Rm ≤ 1280 MPa
Aerospace series - Steel 15CrMoV6 (1.7334) - Air melted - Hardened and tempered -
Bar for machining - De ≤ 100 mm - 1 080 MPa ≤ Rm ≤ 1 280 MPa
Luft- und Raumfahrt - Stahl 15CrMoV6 (1.7334) - Lufterschmolzen - Gehärtet und
angelassen - Stange zur spanenden Bearbeitung - De ≤ 100 mm - 1 080 MPa ≤ Rm ≤ 1
280 MPa
Série aérospatiale - Acier 15CrMoV6 (1.7334) - Élaboré à l'air - Trempé et revenu -
Barres pour usinage - De ≤ 100 mm - 1 080 MPa ≤ Rm ≤ 1 280 MPa
Ta slovenski standard je istoveten z: EN 3523:2024
ICS:
49.025.10 Jekla Steels
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN 3523
EUROPEAN STANDARD
NORME EUROPÉENNE
December 2024
EUROPÄISCHE NORM
ICS 49.025.10 Supersedes EN 3523:2007
English Version
Aerospace series - Steel 15CrMoV6 (1.7334) - Air melted -
Hardened and tempered - Bars for machining - D ≤ 100
e
mm - 1 080 MPa ≤ R ≤ 1 280 MPa
m
Série aérospatiale - Acier 15CrMoV6 (1.7334) - Élaboré Luft- und Raumfahrt - Stahl 15CrMoV6 (1.7334) -
à l'air - Trempé et revenu - Barres pour usinage - D ≤ Lufterschmolzen - Gehärtet und angelassen - Stange
e
100 mm - 1 080 MPa ≤ R ≤ 1 280 MPa zur spanenden Bearbeitung - De ≤ 100 mm - 1 080 MPa
m
≤ Rm ≤ 1 280 MPa
This European Standard was approved by CEN on 18 November 2024.

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
© 2024 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 3523:2024 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 3523:2024) 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 June 2025, and conflicting national standards shall be withdrawn at
the latest by June 2025.
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 3523:2007.
The main changes with respect to the previous edition are as follows:
— EN 3523 (P2), 03/2007:
o correction of the title, scope and Table 1, line 4.1: use of the plural for the semi-product “bars
for machining”;
o correction of the format of Table 1 to comply with the requirements of the EN 4500 series;
o use of “imperfections” rather than “defects” in Table 1, lines 44 and 61;
o Table 1, line
...