EN 3528:2013
(Main)Aerospace series - Steel X2NiCoMo18-8-5 (1.6359) - Vacuum induction melted and vacuum arc remelted - Solution treated and precipitation treated - Bar - a or D ≤ 150 mm - 1 750 MPa ≤ Rm ≤ 2 000 MPa
Aerospace series - Steel X2NiCoMo18-8-5 (1.6359) - Vacuum induction melted and vacuum arc remelted - Solution treated and precipitation treated - Bar - a or D ≤ 150 mm - 1 750 MPa ≤ Rm ≤ 2 000 MPa
This standard specifies the requirements relating to:
Steel X2NiCoMo18-8-5 (1.6359)
Vacuum induction melted and vacuum arc remelted
Solution treated and precipitation treated
Bar
a or D ≤ 150 mm
1 750 MPa ≤ Rm ≤ 2 000 MPa
for aerospace applications.
NOTE Other common designation:
UNS: K92890,
Marage 250,
AECMA: FE-PA95,
ASD-STAN: FE-PM2701,
AIR: E-Z2NKD18,
BS: S 162.
Luft- und Raumfahrt - Stahl X2NiCoMo18-8-5 (1.6359) - Vakuuminduktionserschmolzen und vakuumlichtbogenumgeschmolzen - Lösungsgeglüht und ausgelargert - Stangen - a oder D ≤ 150 mm - 1 750 MPa ≤ Rm ≤ 2 000 MPa
Diese Norm legt die Anforderungen an
Stahl X2NiCoMo18-8-5 (1.6359)
Vakuuminduktionserschmolzen und vakuumlichtbogenumgeschmolzen
Lösungsgeglüht und ausgelagert
Stangen
a oder D 1 750 MPa zur Anwendung in der Luft- und Raumfahrt fest.
ANMERKUNG Andere Bezeichnung:
UNS: K92890,
Marage 250,
MARVAL 18,
AECMA: FE-PA95,
ASD-STAN: FE-PM2701,
AIR: E-Z2NKD18,
BS: S 162.
Série aérospatiale - Acier X2NiCoMo18-8-5 (1.6359) - Elaboré sous vide par induction et refondu par arc sous vide - Mis en solution et vieilli - Barres - a ou D ≤ 150 mm - 1 750 MPa ≤ Rm ≤ 2 000 MPa
Cette Norme européenne spécifie les exigences relatives à :
Acier X2NiCoMo18-8-5 (1.6359)
Élaboré sous vide par induction et refondu par arc sous vide
Mis en solution et vieilli
Barres
a ou D ≤ 150 mm
1 750 MPa ≤ Rm ≤ 2 000 MPa
pour applications aérospatiales.
NOTE Autre désignation commune :
UNS: K92890,
Marage 250,
AECMA: FE-PA95,
ASD-STAN: FE-PM2701,
AIR: E-Z2NKD18,
BS: S 162.
Aeronavtika - Jeklo X2NiCoMo18-8-5 (1.6359) - Indukcijsko taljeno v vakuumu in obločno pretaljeno v vakuumu - Topilno žarjeno in starano - Palice - a ali D ≤ 150 mm - 1750 MPa ≤ Rm ≤ 2000 MPa
General Information
- Status
- Published
- Publication Date
- 08-Jan-2013
- Withdrawal Date
- 08-Jul-2013
- Technical Committee
- ASD-STAN - Aerospace
- Drafting Committee
- ASD-STAN/D 4 - Metallic
- Current Stage
- 9093 - Decision to confirm - Review Enquiry
- Start Date
- 21-Jan-2024
- 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 3528:2013 is a CEN aerospace material standard that specifies requirements for high‑strength maraging steel X2NiCoMo18‑8‑5 (1.6359) in bar form. The standard covers vacuum induction melted (VIM) and vacuum arc remelted (VAR) material delivered in a solution treated condition and intended for a solution + precipitation (age) treated use condition. It applies to bars with section a or diameter D ≤ 150 mm and defines the mechanical and metallurgical acceptance limits for aerospace use, including a tensile strength range Rm = 1 750–2 000 MPa.
Key topics and requirements
- Material designation and chemistry: X2NiCoMo18‑8‑5 (1.6359). Chemical limits are specified for C, Si, Mn, P, S, Mo (≈4.60–5.20%), Ni (17.0–19.0%), Al, Ti and Co (≈7.0–8.5%) in the standard.
- Melting and production: Material must be vacuum induction melted and vacuum arc remelted (VIM + VAR).
- Form and size: Bar form only; a or D ≤ 150 mm (note: special testing rules for 75–150 mm sections).
- Heat treatment:
- Delivery (solution treated): 790 °C ≤ θ ≤ 840 °C / air cooled (AC). Delivery condition code: W.
- Use condition (solution + precipitation treated): aging at 465 °C ≤ θ ≤ 495 °C for t ≥ 3 h.
- Mechanical properties:
- Proof stress Rp0.2 ≥ 1 650 MPa (both delivery and use conditions as applicable).
- Tensile strength Rm between 1 750 and 2 000 MPa.
- Minimum elongation and reduction of area limits (e.g., A ≥ 4–6%, Z ≥ 25–40% depending on condition).
- Hardness and impact requirements are defined (e.g., HV and KV limits).
- Inspection and cleanliness:
- Micro‑cleanliness assessed per EN 2951 (category 5).
- Internal defect acceptance via ultrasonic inspection per EN 4050‑4 (Class 5).
- Visual, dimensional and marking inspections per EN 4700‑002.
Practical applications
EN 3528:2013 is intended for aerospace components requiring very high static strength and predictable toughness, such as high‑load links, shafts, fittings, precision bars and other structural parts where VIM/VAR melting and strict cleanliness are required. The specification ensures traceability, consistent heat treatment, and acceptance testing for critical aerospace hardware.
Who uses this standard
- Materials and metallurgical engineers selecting high‑strength alloys for aerospace designs
- Procurement and quality managers specifying supplier acceptance criteria
- Manufacturers of aerospace bars, forgings and high‑strength components
- Certification and inspection bodies verifying compliance with aerospace material standards
Related standards
- EN 4700‑002 (bar technical specification)
- EN 2043 (product qualification)
- EN 2951 (micrographic non‑metallic inclusion analysis)
- EN 4050‑4 (ultrasonic inspection of bars)
- EN 4258, EN 4500‑005 (general organization and drafting rules)
Other common designations: UNS K92890, Marage 250, AECMA FE‑PA95, ASD‑STAN FE‑PM2701, AIR E‑Z2NKD18, BS S 162.
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Frequently Asked Questions
EN 3528:2013 is a standard published by the European Committee for Standardization (CEN). Its full title is "Aerospace series - Steel X2NiCoMo18-8-5 (1.6359) - Vacuum induction melted and vacuum arc remelted - Solution treated and precipitation treated - Bar - a or D ≤ 150 mm - 1 750 MPa ≤ Rm ≤ 2 000 MPa". This standard covers: This standard specifies the requirements relating to: Steel X2NiCoMo18-8-5 (1.6359) Vacuum induction melted and vacuum arc remelted Solution treated and precipitation treated Bar a or D ≤ 150 mm 1 750 MPa ≤ Rm ≤ 2 000 MPa for aerospace applications. NOTE Other common designation: UNS: K92890, Marage 250, AECMA: FE-PA95, ASD-STAN: FE-PM2701, AIR: E-Z2NKD18, BS: S 162.
This standard specifies the requirements relating to: Steel X2NiCoMo18-8-5 (1.6359) Vacuum induction melted and vacuum arc remelted Solution treated and precipitation treated Bar a or D ≤ 150 mm 1 750 MPa ≤ Rm ≤ 2 000 MPa for aerospace applications. NOTE Other common designation: UNS: K92890, Marage 250, AECMA: FE-PA95, ASD-STAN: FE-PM2701, AIR: E-Z2NKD18, BS: S 162.
EN 3528:2013 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 3528:2013 has the following relationships with other standards: It is inter standard links to EN 4500-005:2024, EN 4258:2024, EN 4700-002:2025, EN 4050-4:2012. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
EN 3528:2013 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)
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Ta slovenski standard je istoveten z: EN 3528:2013
ICS:
49.025.10 Jekla Steels
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN STANDARD
EN 3528
NORME EUROPÉENNE
EUROPÄISCHE NORM
January 2013
ICS 49.025.10
English Version
Aerospace series - Steel X2NiCoMo18-8-5 (1.6359) - Vacuum
induction melted and vacuum arc remelted - Solution treated
and precipitation treated - Bar - a or D ≤ 150 mm - 1 750 MPa ≤
Rm ≤ 2 000 MPa
Série aérospatiale - Acier X2NiCoMo18-8-5 (1.6359) - Luft- und Raumfahrt - Stahl X2NiCoMo18-8-5 (1.6359) -
Elaboré sous vide par induction et refondu par arc sous Vakuuminduktionserschmolzen und
vakuumlichtbogenumgeschmolzen - Lösungsgeglüht und
vide - Mis en solution et vieilli - Barres - a ou D ≤ 150 mm -
ausgelargert - Stangen - a oder D ≤ 150 mm - 1 750 MPa ≤
1 750 MPa ≤ Rm ≤ 2 000 MPa
Rm ≤ 2 000 MPa
This European Standard was approved by CEN on 11 February 2012.
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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United
Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2013 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 3528:2013: E
worldwide for CEN national Members.
Contents Page
Foreword . 3
Introduction . 4
1 Scope . 5
2 Normative references . 5
Foreword
This document (EN 3528:2013) 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 July 2013, and conflicting national standards shall be withdrawn at the
latest by July 2013.
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 organisations of the following
countries are bound to implement thi
...
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