Aerospace series - Heat resisting alloy X12CrNiCoMoW21-20 - Solution treated and precipitation treated - Forgings - De ≤ 100 mm

This document specifies the requirements relating to:
Heat resisting alloy X12CrNiCoMoW21-20
Solution treated and precipitation treated
Forgings
De ≤ 100 mm
for aerospace applications.
ASD-STAN designation: FE-PA4901.

Luft- und Raumfahrt - Hochwarmfeste Legierung X12CrNiCoMoW21-20 - Lösungsgeglüht und ausscheidungsgehärtet - Schmiedestücke - De ≤ 100 mm

Dieses Dokument legt die Anforderungen an:
Hochwarmfeste Legierung X12CrNiCoMoW21-20
Lösungsgeglüht und ausscheidungsgehärtet
Schmiedestücke
De ≤ 100 mm
für Anwendungen in der Luft- und Raumfahrt fest.
ASD-STAN Bezeichnung: FE-PA4901.

Série aérospatiale - Alliage résistant à chaud X12CrNiCoMoW21-20 - Mis en solution et précipité - Pièces forgées ou matricées - De ≤ 100 mm

Le présent document spécifie les exigences relatives à :
Alliage résistant à chaud X12CrNiCoMoW21-20
Mis en solution et précipité
Pièces forgées ou matricées
De ≤ 100 mm
pour applications aérospatiales.
Désignation ASD-STAN : FE-PA4901.

Aeronavtika - Toplotno odporna zlitina X12CrNiCoMoW21-20 - Topilno žarjena in izločevalno utrjena - Izkovki - De ≤ 100 mm

General Information

Status
Published
Publication Date
02-Mar-2020
ICS
49.025.05 - Ferrous alloys in general
Technical Committee
I13 - Imaginarni 13
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
27-Feb-2020
Due Date
03-May-2020
Completion Date
03-Mar-2020
Ref Project
EN 4574:2020 - Aerospace series - Heat resisting alloy X12CrNiCoMoW21-20 - Solution treated and precipitation treated - Forgings - De ≤ 100 mm

Overview

EN 4574:2020 is a CEN (ASD‑STAN) aerospace material standard that defines requirements for the heat‑resisting alloy X12CrNiCoMoW21‑20 in the form of forgings with maximum dimension De ≤ 100 mm. Designated by ASD‑STAN as FE‑PA4901, the standard covers chemical composition, production route, heat‑treatment condition (solution treated and precipitation/ageing treated), mechanical properties, inspection and testing references relevant to aerospace applications.

Key topics and technical requirements

  • Material designation: Heat resisting alloy X12CrNiCoMoW21‑20 (FE‑PA4901).
  • Form and size: Forgings (frequently die or free‑form forgings) with external dimension De ≤ 100 mm.
  • Melting method: Air or vacuum melted.
  • Production route: Forged from EN 4263 forging stock; technical specification for forgings follows EN 4700‑006.
  • Heat treatment: Delivered solution treated and precipitation treated. The standard specifies the heat‑treatment sequence (solution treatment followed by ageing/precipitation - ageing around 815 °C ± 15 °C for ≥ 4 h with air cooling); consult the standard for the full cycle and exact parameters.
  • Chemical composition (representative ranges):
    • C: 0.08–0.16 %; Si ≤ 1.00 %; Mn ≤ 2.00 %; P ≤ 0.020 %; S ≤ 0.015 %
    • Co: 18.5–21.0 %; Cr: 20.0–22.5 %; Ni: ~19.0–21.0 %; Mo: 2.50–3.50 %; W: 2.00–3.00 %
    • Nb: 0.75–1.25 %; N: 0.10–0.20 %; Cu ≤ 0.50 %; Fe balance
  • Mechanical properties and performance:
    • Proof stress Rp0.2 ≥ 345 MPa
    • Tensile strength Rm between 690 and 960 MPa
    • Elongation A ≥ 30 %
    • Hardness: 192 ≤ HB ≤ 241
    • Creep/rupture: evaluated at 730 °C for ≥ 100 h with specified rupture stress and elongation requirements (see standard table)
  • Testing & inspection: Test piece selection, sampling and inspections are referenced to EN 4700‑006; visual/macrographic and other inspections as specified.

Applications and who uses this standard

  • Intended for aerospace high‑temperature components manufactured as forgings where heat resistance and high strength are required.
  • Primary users:
    • Materials and metallurgical engineers specifying alloy selection
    • Aerospace component designers and structural engineers
    • Forging manufacturers and heat‑treatment shops
    • Quality assurance, procurement, and certification teams preparing material purchase specifications

Related standards

  • EN 4263 - Forging stock specification for FE‑PA4901
  • EN 4700‑006 - Technical specification for pre‑production and production forgings
  • EN 4258 / EN 4500‑003 - Series organization and drafting rules for aerospace metallic material standards

Keywords: EN 4574, X12CrNiCoMoW21‑20, heat resisting alloy, aerospace forgings, solution treated, precipitation treated, FE‑PA4901, EN 4700‑006.

Frequently Asked Questions

SIST EN 4574:2020 is a standard published by the Slovenian Institute for Standardization (SIST). Its full title is "Aerospace series - Heat resisting alloy X12CrNiCoMoW21-20 - Solution treated and precipitation treated - Forgings - De ≤ 100 mm". This standard covers: This document specifies the requirements relating to: Heat resisting alloy X12CrNiCoMoW21-20 Solution treated and precipitation treated Forgings De ≤ 100 mm for aerospace applications. ASD-STAN designation: FE-PA4901.

This document specifies the requirements relating to: Heat resisting alloy X12CrNiCoMoW21-20 Solution treated and precipitation treated Forgings De ≤ 100 mm for aerospace applications. ASD-STAN designation: FE-PA4901.

SIST EN 4574:2020 is classified under the following ICS (International Classification for Standards) categories: 49.025.05 - Ferrous alloys in general. The ICS classification helps identify the subject area and facilitates finding related standards.

SIST EN 4574:2020 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-april-2020
Aeronavtika - Toplotno odporna zlitina X12CrNiCoMoW21-20 - Topilno žarjena in
izločevalno utrjena - Izkovki - De ≤ 100 mm
Aerospace series - Heat resisting alloy X12CrNiCoMoW21-20 - Solution treated and
precipitation treated - Forgings - De ≤ 100 mm
Luft- und Raumfahrt - Hochwarmfeste Legierung X12CrNiCoMoW21-20 -
Lösungsgeglüht und ausscheidungsgehärtet - Schmiedestücke - De ≤ 100 mm
Série aérospatiale - Alliage résistant à chaud X12CrNiCoMoW21-20 - Mis en solution et
précipité - Pièces forgées ou matricées - De ≤ 100 mm
Ta slovenski standard je istoveten z: EN 4574:2020
ICS:
49.025.05 Železove zlitine na splošno Ferrous alloys in general
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN 4574
EUROPEAN STANDARD
NORME EUROPÉENNE
February 2020
EUROPÄISCHE NORM
ICS 49.025.05
English Version
Aerospace series - Heat resisting alloy X12CrNiCoMoW21-
20 - Solution treated and precipitation treated - Forgings -
De ≤ 100 mm
Série aérospatiale - Alliage résistant à chaud Luft- und Raumfahrt - Hochwarmfeste Legierung
X12CrNiCoMoW21-20 - Mis en solution et précipité - X12CrNiCoMoW21-20 - Lösungsgeglüht und
ausgelagert - Gesenk-und Freiformschmiedestücke - De
Pièces forgées et pièces matricées - De ≤ 100 mm
≤ 100 mm
This European Standard was approved by CEN on 8 December 2019.

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, Turkey 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
© 2020 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 4574:2020 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 . 8

European foreword
This document (EN 4574:2020) 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 August 2020, and conflicting national standards shall be
withdrawn
...


SLOVENSKI STANDARD
01-april-2020
Aeronavtika - Toplotno odporna zlitina X12CrNiCoMoW21-20 - Topilno žarjena in
izločevalno utrjena - Izkovki - De ≤ 100 mm
Aerospace series - Heat resisting alloy X12CrNiCoMoW21-20 - Solution treated and
precipitation treated - Forgings - De ≤ 100 mm
Luft- und Raumfahrt - Hochwarmfeste Legierung X12CrNiCoMoW21-20 -
Lösungsgeglüht und ausscheidungsgehärtet - Schmiedestücke - De ≤ 100 mm
Série aérospatiale - Alliage résistant à chaud X12CrNiCoMoW21-20 - Mis en solution et
précipité - Pièces forgées ou matricées - De ≤ 100 mm
Ta slovenski standard je istoveten z: EN 4574:2020
ICS:
49.025.05 Železove zlitine na splošno Ferrous alloys in general
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN 4574
EUROPEAN STANDARD
NORME EUROPÉENNE
February 2020
EUROPÄISCHE NORM
ICS 49.025.05
English Version
Aerospace series - Heat resisting alloy X12CrNiCoMoW21-
20 - Solution treated and precipitation treated - Forgings -
De ≤ 100 mm
Série aérospatiale - Alliage résistant à chaud Luft- und Raumfahrt - Hochwarmfeste Legierung
X12CrNiCoMoW21-20 - Mis en solution et précipité - X12CrNiCoMoW21-20 - Lösungsgeglüht und
ausgelagert - Gesenk-und Freiformschmiedestücke - De
Pièces forgées et pièces matricées - De ≤ 100 mm
≤ 100 mm
This European Standard was approved by CEN on 8 December 2019.

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, Turkey 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
© 2020 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 4574:2020 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 . 8

European foreword
This document (EN 4574:2020) 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 August 2020, and conflicting national standards shall be
withdrawn
...

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