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

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

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

Dieses Dokument legt die Anforderungen an:
Hochwarmfeste Legierung X12CrNiCoMoW21-20
Lösungsgeglüht und ausscheidungsgehärtet
Stangen und Profile
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 - Barres et profilés - De ≤ 100 mm

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

Aeronavtika - Toplotno odporna zlitina X12CrNiCoMoW21-20 - Topilno žarjena in izločevalno utrjena - Palice in profili - 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 4573:2020 - Aerospace series - Heat resisting alloy X12CrNiCoMoW21-20 - Solution treated and precipitation treated - Bars and sections - De ≤ 100 mm

Relations

Refers
SIST EN 4700-002:2026 - Aerospace series - Steel and heat-resisting alloys - Wrought products - Technical specification - Part 002: Bars and sections
Effective Date
28-Jan-2026
Refers
SIST EN 2043:2014 - Aerospace series - Metallic materials - General requirements for semi-finished product qualification (excluding forgings and castings)
Effective Date
28-Jan-2026

Overview

SIST EN 4573:2020 is a European Standard developed by CEN for the aerospace sector. This standard specifies requirements for heat resisting alloy X12CrNiCoMoW21-20 in the form of bars and sections with a nominal diameter (De) not exceeding 100 mm. The alloy is both solution treated and precipitation treated, providing excellent performance in demanding, high-temperature aerospace environments. Recognized under the ASD-STAN designation FE-PA4901, this standard ensures consistent product quality across the European aerospace supply chain.

Key Topics

  • Heat Resisting Alloy Specifications: EN 4573 covers the specific requirements for the X12CrNiCoMoW21-20 alloy, including the form (bars and sections), maximum dimension (De ≤ 100 mm), and necessary heat treatments (solution treated and precipitation treated) for aerospace use.
  • Manufacturing and Testing Requirements: The standard sets forth technical specifications related to production methods, delivery conditions, testing procedures, visual and ultrasonic inspections, and marking.
  • Quality Assurance: To ensure safety and reliability, EN 4573 references qualification procedures outlined in EN 2043, focusing on semi-finished product qualification relevant to aerospace metallic materials.
  • Heat Treatment and Mechanical Properties: Mechanical characteristics such as proof stress, tensile strength, elongation, hardness, and grain size are essential components, ensuring the material meets aerospace application standards.

Applications

SIST EN 4573:2020 is fundamental for:

  • Aerospace Parts Manufacturers: This standard is critical for producers of engine components, airframe parts, fasteners, and other high-temperature-resistant metallic structures in aircraft and spacecraft.
  • Supply Chain Consistency: By providing a unified reference for heat resisting alloy bars and sections, EN 4573 supports harmonized quality and traceability throughout the European aerospace industry.
  • Product Qualification and Procurement: Aerospace organizations and suppliers reference this standard to ensure sourced materials meet stringent mechanical and physical requirements for safety-critical applications.
  • Regulatory Compliance: Meeting EN 4573 assures compliance with both customer and regulatory demands for aerospace materials, reducing the risk of failure due to material inconsistency or inadequate documentation.

Related Standards

To fully comply with SIST EN 4573:2020, industry professionals should reference these standards:

  • EN 2043: Covers general requirements for qualification of semi-finished metallic materials, excluding forgings and castings, in aerospace applications.
  • EN 4700-002: Specifies technical requirements for bars and sections of steel and heat resisting alloys in aerospace use, directly supporting the requirements of EN 4573.
  • EN 4258: Describes the organization and classification of metallic material standards for the aerospace sector, highlighting how EN 4573 fits within broader materials standardization efforts.
  • EN 4500-003: Provides the rules for drafting and presenting standards specific to heat resisting alloys, ensuring consistency across documents.

SIST EN 4573:2020 is an essential standard for ensuring the mechanical integrity and reliability of heat-resistant steel alloy products used in aerospace applications. By referencing this standard, aerospace manufacturers and suppliers demonstrate their commitment to quality, safety, and international best practices in material selection and product qualification.

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Frequently Asked Questions

SIST EN 4573:2020 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 - Bars and sections - De ≤ 100 mm". This standard covers: This document specifies the requirements relating to: Heat resisting alloy X12CrNiCoMoW21-20 Solution treated and precipitation treated Bars and sections 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 Bars and sections De ≤ 100 mm for aerospace applications. ASD-STAN Designation: FE-PA4901.

SIST EN 4573:2020 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 4573:2020 has the following relationships with other standards: It is inter standard links to SIST EN 4700-002:2026, SIST EN 2043:2014. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.

SIST EN 4573:2020 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 - Palice in profili - De ≤ 100 mm
Aerospace series - Heat resisting alloy X12CrNiCoMoW21-20 - Solution treated and
precipitation treated - Bars and sections - De ≤ 100 mm
Luft- und Raumfahrt - Hochwarmfeste Legierung X12CrNiCoMoW21-20 -
Lösungsgeglüht und ausscheidungsgehärtet - Stangen und Profile - De ≤ 100 mm
Série aérospatiale - Alliage résistant à chaud X12CrNiCoMoW21-20 - Mis en solution et
précipité - Barres et profilés - De ≤ 100 mm
Ta slovenski standard je istoveten z: EN 4573:2020
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 4573
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 - Bars and
sections - 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
Barres et profilés - De ≤ 100 mm ausscheidungsgehärtet - Stangen und Profile - De ≤ 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 4573:2020 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 4573:2020) 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 at the latest by August 2020.
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 respo
...

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