SIST EN 2821:2024

Aerospace series - Steel X5CrNiCu15 5 (1.4545) - Consumable electrode remelted - Solution treated and precipitation treated - Bars for machining - a or D ≤ 200 mm - Rm ≥ 1 310 MPa

This document specifies the requirements relating to:
Steel X5CrNiCu15-5 (1.4545)
Consumable electrode remelted
Solution treated and precipitation treated
Bars for machining
a or D ≤ 200 mm
Rm ≥ 1 310 MPa
for aerospace applications.

Luft- und Raumfahrt - Stahl X5CrNiCu15 5 (1.4545) - Mit selbstverzehrender Elektrode umgeschmolzen - Lösungsgeglüht und ausscheidungsgehärtet - Stangen zur spanenden Bearbeitung - a oder D ≤ 200 mm - Rm ≥ 1 310 MPa

No Scope available

Série aérospatiale - Acier X5CrNiCu15 5 (1.4545) - Refondu à l'électrode consommable - Mis en solution et vieilli - Barres pour usinage - a ou D ≤ 200 mm - Rm ≥ 1 310 MPa

Le présent document spécifie les exigences relatives à :
Acier X5CrNiCu15 5 (1.4545)
Refondu à l'électrode consommable
Mis en solution et précipité
Barres pour usinage
a ou D ≤ 200 mm
Rm ≥ 1 310 MPa
pour les applications aérospatiales.

Aeronavtika - Jeklo X5CrNiCu15 5 (1.4545) - Pretaljeno s talilno elektrodo - Žarjeno v topilu in utrjeno - Palice za obdelavo - a ali D ≤ 200 mm - Rm ≥ 1310 MPa

Ta dokument določa zahteve, ki se navezujejo na:
jeklo X5CrNiCu15 5 (1.4545),
pretaljeno s taljivo elektrodo,
žarjeno v topilu in utrjeno,
palice za obdelavo,
a ali D ≤ 200 mm,
Rm ≥ 1310 MPa,
za uporabo v aeronavtiki.

General Information

• Status: Published
• Public Enquiry End Date: 30-Sep-2021
• Publication Date: 29-Aug-2024
• ICS: 49.025.10 - Steels
• ICS: 77.140.60 - Steel bars and rods
• Technical Committee: I13 - Imaginarni 13
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 28-Aug-2024
• Due Date: 02-Nov-2024
• Completion Date: 30-Aug-2024
• Ref Project: EN 2821:2024 - Aerospace series - Steel X5CrNiCu15-5 (1.4545) - Consumable electrode remelted - Solution treated and precipitation treated - Bars for machining - a or D ≤ 200 mm - Rm ≥ 1 310 MPa

Relations

• Revised: SIST EN 2821:2009 - Aerospace series - Steel FE-PM1802 (X5CrNiCu15-5) - Consumable electrode remelted - Solution treated and precipitation treated - Bar for machining - a or D ≤ 200 mm - Rm ≥ 1 310 MPa
• Effective Date: 19-Jan-2023

Overview

SIST EN 2821:2024 is a European standard developed by CEN that specifies stringent requirements for the aerospace-grade steel grade X5CrNiCu15-5 (1.4545). This steel is produced by a consumable electrode remelting process, then subjected to solution treatment and precipitation treatment to meet the mechanical properties necessary for aerospace applications. The standard covers machining bars with a diameter or cross-section of up to 200 mm and a minimum tensile strength (Rm) of 1,310 MPa.

The standard is part of the EN aerospace metal material series and aligns with general aerospace material guidelines to ensure high-quality, high-performance steel products for safety-critical aerospace components.

Key Topics

• Material Specification: Steel grade X5CrNiCu15-5 (1.4545), known for corrosion resistance, high strength, and toughness.
• Manufacturing Process: Consumable electrode remelting to enhance purity and minimize defects.
• Heat Treatments:
  • Solution Treatment: Performed at 1,025 – 1,055 °C for at least 30 minutes, followed by rapid cooling.
  • Precipitation Treatment: Conducted between 465 – 495 °C for at least 1 hour, enhancing strength and durability.
• Form and Dimensions: Bars designed for machining with diameter or cross-section (a or D) ≤ 200 mm.
• Mechanical Properties:
  • Minimum tensile strength (Rm) ≥ 1,310 MPa.
  • Proof stress (Rp0.2) ≥ 1,170 MPa.
  • Elongation and reduction in area meet aerospace safety factors.
  • Hardness values controlled between HB 388–444 or 40–47 HRC.
• Inspection and Testing:
  • Microstructural analysis ensuring δ ferrite content ≤ 2%.
  • Ultrasonic and visual testing to detect internal and surface defects.
  • Compliance with EN 4700-002 technical specifications.
• Quality Assurance: Product qualification as per EN 2043, including traceability, marking, and dimensional inspections.

Applications

SIST EN 2821:2024 steel bars are critical for aerospace structural components requiring:

• High strength-to-weight ratio materials.
• Superior corrosion resistance for long lifecycle in harsh environments.
• Reliability under cyclic loading and extreme temperature variations.
• Precision machining to tight tolerances for complex aerospace parts.
• Use in components such as turbine shafts, fasteners, and critical load-bearing parts in aircraft and aerospace vehicles.

This standard enables manufacturers and aerospace engineers to select and procure consistent, certified steel bars that meet the demanding conditions of aerospace engineering, improving safety and performance of aerospace hardware.

Related Standards

SIST EN 2821:2024 integrates closely with other aerospace and metallic material standards:

• EN 4700-002 - Technical specifications for steel and heat-resisting alloy bars and sections.
• EN 2043 - General requirements for semi-finished aerospace metallic products qualification.
• EN 2951 - Micrographic determination of non-metallic inclusion content in aerospace steels.
• EN 4050-4 - Ultrasonic inspection criteria for aerospace bars and forgings.
• EN 4436 - Testing for δ ferrite content in steel.
• EN 4258 - Overall organization and classification of aerospace metallic material standards.
• EN 4500-005 - Rules for drafting and presentation of aerospace steel material standards.

By adhering to SIST EN 2821:2024 and these associated standards, organizations ensure compliance with aerospace industry best practices, enabling international acceptance and interoperability.

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Keywords: SIST EN 2821:2024, aerospace steel standard, X5CrNiCu15-5, consumable electrode remelted steel, precipitation treated steel, solution treated steel, aerospace machining bars, high tensile steel bars, mechanical properties aerospace steel, steel bars for aerospace applications, CEN aerospace standards.

Standards Content (Sample)

SLOVENSKI STANDARD
01-oktober-2024
Aeronavtika - Jeklo X5CrNiCu15 5 (1.4545) - Pretaljeno s talilno elektrodo - Žarjeno
v topilu in utrjeno - Palice za obdelavo - a ali D ≤ 200 mm - Rm ≥ 1310 MPa
Aerospace series - Steel X5CrNiCu15 5 (1.4545) - Consumable electrode remelted -
Solution treated and precipitation treated - Bars for machining - a or D ≤ 200 mm - Rm ≥
1 310 MPa
Luft- und Raumfahrt - Stahl X5CrNiCu15 5 (1.4545) - Mit selbstverzehrender Elektrode
umgeschmolzen - Lösungsgeglüht und ausscheidungsgehärtet - Stangen zur spanenden
Bearbeitung - a oder D ≤ 200 mm - Rm ≥ 1 310 MPa
Série aérospatiale - Acier X5CrNiCu15 5 (1.4545) - Refondu à l'électrode consommable
- Mis en solution et vieilli - Barres pour usinage - a ou D ≤ 200 mm - Rm ≥ 1 310 MPa
Ta slovenski standard je istoveten z: EN 2821:2024
ICS:
49.025.10 Jekla Steels
77.140.60 Jeklene palice in drogovi Steel bars and rods
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN 2821
EUROPEAN STANDARD
NORME EUROPÉENNE
August 2024
EUROPÄISCHE NORM
ICS 49.025.10 Supersedes EN 2821:2007
English Version
Aerospace series - Steel X5CrNiCu15-5 (1.4545) -
Consumable electrode remelted - Solution treated and
precipitation treated - Bars for machining - a or D  200
mm - Rm  1 310 MPa
Série aérospatiale - Acier X5CrNiCu15-5 (1.4545) - Luft- und Raumfahrt - Stahl X5CrNiCu15-5 (1.4545) -
Refondu à l'électrode consommable - Mis en solution et Mit selbstverzehrender Elektrode umgeschmolzen -
précipité - Barres pour usinage - a ou D  200 mm - Rm Lösungsgeglüht und ausscheidungsgehärtet - Stangen
zur spanenden Bearbeitung - a oder D  200 mm - Rm
 1 310 MPa
 1 310 MPa
This European Standard was approved by CEN on 26 May 2024.

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, Türkiye 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
© 2024 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 2821:2024 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 . 6

European foreword
This document (EN 2821:2024) 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 shall be given the status of a national standard, either by publication of an identical text
or by endorsement, at the latest by February 2025, and conflicting national standards shall be
withdrawn at the latest by February 2025.
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 responsible for identifying any or all such patent rights.
This document supersedes EN 2821:2007.
The main changes with respect to the previous edition are as follows:
— EN 2821 (P3), 03/2007 — Overall editorial improvements and correction of the French title.
According to the CEN-CENELEC Internal Regulations, the national standards organizations of the
following countries are bound to implement this document: Austria, Belgium, Bulgaria, Croatia, Cyprus,
Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland,
...