kSIST FprEN 4098:2025
(Main)Aerospace series - Steel 40CrMoV12 (1.8523) - Remelted - Hardened and tempered - Forgings - De ≤ 50 mm - 1 250 MPa ≤ Rm ≤ 1 400 MPa
Aerospace series - Steel 40CrMoV12 (1.8523) - Remelted - Hardened and tempered - Forgings - De ≤ 50 mm - 1 250 MPa ≤ Rm ≤ 1 400 MPa
This document specifies the requirements relating to:
Steel 40CrMoV12 (1.8523)
Consumable electrode remelted
Hardened and tempered
Forgings
De ≤ 50 mm
1 250 MPa ≤ Rm ≤ 1 400 MPa
for aerospace applications.
W.nr: 1.8523.
ASD-STAN designation: FE-PL1507.
Luft- und Raumfahrt - Stahl 40CrMoV12 (1.8523) - Lufterschmolzen - gehärtet und angelassen - Gesenk- und Freiformschmiedestücke - De ≤ 50 mm - 1 250 MPa ≤ Rm ≤ 1 400 MPa
No Scope available
Série aérospatiale - Acier 40CrMoV12 (1.8523) - Refondu - Trempé et revenu - Pièces forgées ou matricées - De ≤ 50 mm - 1 250 MPa ≤ Rm ≤ 1 400 MPa
Le présent document spécifie les exigences relatives à :
Acier 40CrMoV12 (1.8523)
Refondu à l'électrode consommable
Trempé et revenu
Pièces forgées ou matricées
De ≤ 50 mm
1 250 MPa ≤ Rm ≤ 1 400 MPa
pour les applications aérospatiales.
W.nr : 1.8523.
Désignation ASD-STAN : FE-PL1507.
Aeronavtika - Jeklo 40CrMoV12 (1.8523) - Pretaljeni - Utrjeni in mehko žarjeni - Izkovki - De ≤ 50 mm - 1 250 MPa ≤ Rm ≤ 1 400 MPa
General Information
- Status
- Not Published
- Public Enquiry End Date
- 30-Jul-2024
- Technical Committee
- I13 - Imaginarni 13
- Current Stage
- 5020 - Formal vote (FV) (Adopted Project)
- Start Date
- 08-Aug-2025
- Due Date
- 26-Sep-2025
- Completion Date
- 08-Aug-2025
Relations
- Effective Date
- 18-Jan-2023
Overview
EN 4098 (ASD‑STAN designation FE‑PL1507; W.nr. 1.8523) is an aerospace material standard that defines requirements for steel 40CrMoV12 (1.8523) in the form of consumable electrode remelted forgings, specifically for parts with nominal diameter De ≤ 50 mm. The standard covers hardened and tempered forgings with high static strength - tensile strength 1 250–1 400 MPa - intended for aerospace applications. (Draft work appeared as prEN 4098:2024 and will supersede EN 4098:2007.)
Key topics and technical requirements
- Material designation: Steel 40CrMoV12 (1.8523), remelted (consumable electrode).
- Form and limits: Forgings produced from EN 3971 forging stock; maximum diameter De ≤ 50 mm.
- Heat treatment / delivery conditions: Normalized & annealed for supply; hardened and tempered in use condition. Typical heat treatments specified (e.g., 910–940 °C quench/overquench and tempering ≥ 600 °C) as referenced in the standard.
- Mechanical properties:
- Tensile strength (Rm): 1 250 ≤ Rm ≤ 1 400 MPa
- Proof stress (Rp0,2): ≥ 1 030 MPa
- Elongation (A): ≥ 10 %
- Reduction of area (Z): ≥ 35 %
- Hardness (HB): 375–401 HB (with some limits ≤ 277 HB in other conditions)
- Impact: KV ≥ 30 J (notch direction specified); IZOD optional with min. 20 ft·lbf if used
- Chemical composition: Specified element ranges (C, Si, Mn, Cr, Mo, V, etc.) with limits (e.g., C 0.35–0.43 %, Cr ~3.00–3.50 %).
- Testing & inspection: Test samples, test pieces, visual and macrostructure inspections, grain size (G ≥ 7 for first article), batch uniformity and marking per EN 2157‑3 and other referenced documents.
- Special notes: Suitable for nitriding; phosphate + tin limit and blank nitriding capability clause included.
Applications and who uses it
- Aerospace structural and mechanical components requiring very high strength in small-diameter forgings.
- Typical users:
- Design and stress engineers specifying high‑strength forgings
- Aerospace forging manufacturers and heat‑treatment shops
- Material and quality assurance engineers for procurement, testing, and inspection
- Suppliers preparing certification and conformity documentation for aerospace contracts
Related standards
- EN 2157‑3 (forging stock and forgings - technical specification)
- EN 3971 (forging stock – annealed)
- EN 4700‑002 (wrought products)
- EN 4258, EN 4500‑005, EN 4436 (series organization and test methods)
Keywords: EN 4098, 40CrMoV12, 1.8523, aerospace steel, hardened and tempered forgings, consumable electrode remelted, 1250–1400 MPa.
Frequently Asked Questions
kSIST FprEN 4098:2025 is a draft published by the Slovenian Institute for Standardization (SIST). Its full title is "Aerospace series - Steel 40CrMoV12 (1.8523) - Remelted - Hardened and tempered - Forgings - De ≤ 50 mm - 1 250 MPa ≤ Rm ≤ 1 400 MPa". This standard covers: This document specifies the requirements relating to: Steel 40CrMoV12 (1.8523) Consumable electrode remelted Hardened and tempered Forgings De ≤ 50 mm 1 250 MPa ≤ Rm ≤ 1 400 MPa for aerospace applications. W.nr: 1.8523. ASD-STAN designation: FE-PL1507.
This document specifies the requirements relating to: Steel 40CrMoV12 (1.8523) Consumable electrode remelted Hardened and tempered Forgings De ≤ 50 mm 1 250 MPa ≤ Rm ≤ 1 400 MPa for aerospace applications. W.nr: 1.8523. ASD-STAN designation: FE-PL1507.
kSIST FprEN 4098:2025 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.
kSIST FprEN 4098:2025 has the following relationships with other standards: It is inter standard links to SIST EN 4098:2007. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
kSIST FprEN 4098:2025 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 4098:2024
01-julij-2024
Aeronavtika - Jeklo 40CrMoV12 (1.8523) - Pretaljeni - Utrjeni in mehko žarjeni -
Izkovki - De ≤ 50 mm - 1 250 MPa ≤ Rm ≤ 1 400 MPa
Aerospace series - Steel 40CrMoV12 (1.8523) - Remelted - Hardened and tempered -
Forgings - De ≤ 50 mm - 1 250 MPa ≤ Rm ≤ 1 400 MPa
Luft- und Raumfahrt - Stahl 40CrMoV12 (1.8523) - Lufterschmolzen - gehärtet und
angelassen - Gesenk- und Freiformschmiedestücke - De ≤ 50 mm - 1 250 MPa ≤ Rm ≤ 1
400 MPa
Série aérospatiale - Acier 40CrMoV12 (1.8523) - Refondu - Trempé et revenu - Pièces
forgées ou matricées - De ≤ 50 mm - 1 250 MPa ≤ Rm ≤ 1 400 MPa
Ta slovenski standard je istoveten z: prEN 4098
ICS:
49.025.10 Jekla Steels
oSIST prEN 4098:2024 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
oSIST prEN 4098:2024
oSIST prEN 4098:2024
DRAFT
EUROPEAN STANDARD
prEN 4098
NORME EUROPÉENNE
EUROPÄISCHE NORM
June 2024
ICS 49.025.10 Will supersede EN 4098:2007
English Version
Aerospace series - Steel 40CrMoV12 (1.8523) - Remelted -
Hardened and tempered - Forgings - D ≤ 50 mm –
e
1 250 MPa ≤ R ≤ 1 400 MPa
m
Série aérospatiale - Acier 40CrMoV12 (1.8523) - Luft- und Raumfahrt - Stahl 40CrMoV12 (1.8523) -
Refondu - Trempé et revenu - Pièces forgées ou Lufterschmolzen - gehärtet und angelassen - Gesenk-
matricées - D ≤ 50 mm - 1 250 MPa ≤ R ≤ 1 400 MPa und Freiformschmiedestücke - D ≤ 50 mm –
e m e
1 250 MPa ≤ R ≤ 1 400 MPa
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
© 2024 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 4098:2024 E
worldwide for CEN national Members.
oSIST prEN 4098:2024
prEN 4098:2024 (E)
Contents Page
European foreword . 3
Introduction . 4
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 5
4 Requirements . 5
Bibliography . 9
oSIST prEN 4098:2024
prEN 4098:2024 (E)
European foreword
This document (prEN 4098:2024) 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 is currently submitted to the CEN Enquiry.
This document will supersede EN 4098:2007.
prEN 4098:2024 includes the following significant technical changes with respect to EN 4098:2007:
— EN 4098 (P1), 08/2007 — Update of the
...
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