EN 2205:2009
(Main)Aerospace series - Steel FE-PL1502 (25CrMo4) - 900 MPa ≤ Rm ≤ 1 100 MPa - Bars - De ≤ 40 mm
Aerospace series - Steel FE-PL1502 (25CrMo4) - 900 MPa ≤ Rm ≤ 1 100 MPa - Bars - De ≤ 40 mm
This standard specifies the requirements relating to:
Steel FE-PL1502 (25CrMo4)
900 MPa < or = Rm < or = 1 100 MPa
Bars
De < or = 40 mm
for aerospace applications.
Luft- und Raumfahrt - Stahl FE-PL1502 (25CrMo4) - 900 MPa ≤ Rm ≤ 1 100 MPa - Stangen - De ≤ 40 mm
Série aérospatiale - Acier FE-PL1502 (25CrMo4) - 900 MPa ≤ Rm ≤ 1 100 MPa - Barres - De ≤ 40 mm
Aeronavtika - Jeklo FE-PL1502 (25CrMo4) - 900 MPa =< Rm =< 1100 MPa - Palice - De =< 40 mm
General Information
- Status
- Published
- Publication Date
- 10-Mar-2009
- Withdrawal Date
- 29-Sep-2009
- Technical Committee
- ASD-STAN - Aerospace
- Drafting Committee
- ASD-STAN/D 4 - Metallic
- Current Stage
- 9093 - Decision to confirm - Review Enquiry
- Start Date
- 21-Jan-2025
- Completion Date
- 21-Jan-2026
Relations
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
Overview
EN 2205:2009 (CEN) defines the material and product requirements for aerospace series steel FE-PL1502 (25CrMo4) supplied as bars with an external diameter (De) ≤ 40 mm. The standard targets applications that require high tensile strength (Rm 900–1 100 MPa) and controlled toughness for aircraft components. It is part of the EN aerospace metallic materials series and is drafted in accordance with EN 4500-5 and EN 4258.
Key practical points from the standard:
- Form: Bars, maximum De ≤ 40 mm
- Material designation: FE-PL1502 (25CrMo4)
- Tensile range: Rm 900–1 100 MPa
- Typical use: General purpose aerospace steel; weldable and suitable for structural parts
Key Topics
Chemical composition (specified ranges in the standard):
- Carbon (C): min 0.22 %, max 0.29 %
- Silicon (Si): min 0.10 %, max 0.35 %
- Manganese (Mn): min 0.50 %, max 0.80 %
- Phosphorus (P): ≤ 0.020 %
- Sulfur (S): ≤ 0.015 %
- Chromium (Cr): min 0.90 %, max 1.20 %
- Molybdenum (Mo): min 0.15 %, max 0.25 %
- Nickel (Ni): ≤ 0.30 %
- Balance: Iron (Fe)
Delivery and heat treatment:
- Delivery conditions include annealed and hardened & tempered states.
- Specified hardening: typical austenitizing 830 °C – 880 °C with oil or water quench (OQ/WQ), followed by tempering at ≥ 520 °C.
- Reference heat treatment example: (870 ± 10) °C / OQ + (545 ± 5) °C (as given in the standard).
Mechanical and toughness requirements:
- Hardness in the hardened & tempered condition: HB approx. 269–331 (with an annealed limit ≤ 212 HB).
- Impact energy requirement in the hardened & tempered condition: KV ≥ 40 J (per the standard tables).
- Hardenability assessment specified by EN ISO 642 (Jominy test).
Applications
EN 2205:2009 is aimed at manufacturers, purchasers and quality engineers working in aerospace and defense supply chains. Typical applications include:
- High-strength fasteners, shafts, bushes or small-diameter structural parts where 25CrMo4 chemistry and Rm 900–1 100 MPa are required.
- Components requiring validated heat treatment cycles and traceable production records to meet aerospace procurement specifications.
Benefits for users:
- Clear material and inspection criteria for high-strength aerospace bars
- Defined heat treatment and hardness limits for consistent mechanical performance
- Reference to qualification pathways for producers and purchasers
Related Standards
- EN 4700-2 - Technical specification for steel wrought products (bar & section)
- EN ISO 642 - Hardenability test by end quenching (Jominy test)
- EN 2034 - Dimensions and tolerances for round steel bars - Aerospace series
- EN 4258 and EN 4500-5 - Organization and drafting rules for aerospace material standards
- EN 9133 - Product qualification and qualification programme guidance
For procurement, inspection and qualification follow the referenced EN norms and agree a qualification programme between manufacturer and purchaser as indicated in EN 2205:2009.
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Frequently Asked Questions
EN 2205:2009 is a standard published by the European Committee for Standardization (CEN). Its full title is "Aerospace series - Steel FE-PL1502 (25CrMo4) - 900 MPa ≤ Rm ≤ 1 100 MPa - Bars - De ≤ 40 mm". This standard covers: This standard specifies the requirements relating to: Steel FE-PL1502 (25CrMo4) 900 MPa < or = Rm < or = 1 100 MPa Bars De < or = 40 mm for aerospace applications.
This standard specifies the requirements relating to: Steel FE-PL1502 (25CrMo4) 900 MPa < or = Rm < or = 1 100 MPa Bars De < or = 40 mm for aerospace applications.
EN 2205:2009 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.
EN 2205:2009 has the following relationships with other standards: It is inter standard links to EN ISO 642:2024, EN 9133:2018, EN 4258:2024, EN 7010:2020. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
EN 2205:2009 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
01-maj-2009
Aeronavtika - Jeklo FE-PL1502 (25CrMo4) - 900 MPa =< Rm =< 1100 MPa - Palice -
De =< 40 mm
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Ta slovenski standard je istoveten z: EN 2205:2009
ICS:
49.025.10 Jekla Steels
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN STANDARD
EN 2205
NORME EUROPÉENNE
EUROPÄISCHE NORM
March 2009
ICS 49.025.10
English Version
Aerospace series - Steel FE-PL1502 (25CrMo4) - 900 MPa ≤
Rm ≤ 1 100 MPa - Bars - De ≤ 40 mm
Série aérospatiale - Acier FE-PL1502 (25CrMo4) - 900 MPa Luft- und Raumfahrt - Stahl FE-PL1502 (25CrMo4) - 900
≤ Rm ≤ 1 100 MPa - Barres - De ≤ 40 mm MPa ≤ Rm ≤ 1 100 MPa - Stangen - De ≤ 40 mm
This European Standard was approved by CEN on 16 August 2008.
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 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 Management Centre has the same status as the
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CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,
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EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2009 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 2205:2009: E
worldwide for CEN national Members.
Foreword
This document (EN 2205:2009) 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 Standard has
received the approval of the National Associations and the Official Services of the member countries of ASD,
prior to its presentation to CEN.
This European Standard shall be given the status of a national standard, either by publication of an identical
text or by endorsement, at the latest by September 2009, and conflicting national standards shall be
withdrawn at the latest by September 2009.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech
Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain,
Sweden, Switzerland and the United Kingdom.
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