SIST EN 4842:2023

Aerospace series - Steel X5CrNiCu15-5 (1.4545) - Consumable electrode remelted (ESR or VAR) - Solution treated and precipitation treated (H1025) - Bars for machining - a or D ≤ 250 mm - 1 070 MPa ≤ Rm ≤ 1 200 MPa - Premium quality (pq)

This document specifies the requirements relating to:
Steel X5CrNiCu15-5 (1.4545)
Consumable electrode remelted (ESR or VAR)
Solution treated and precipitation treated (H1025)
Bars for machining
a or D ≤ 250 mm
1 070 MPa ≤ Rm ≤ 1 200 MPa
Premium quality (pq)
for aerospace applications.
NOTE   Other designation: The ASD-STAN designation of this material is FE-PM1802.
Only the chemical composition of this document are to be considered.

Luft- und Raumfahrt - Stahl X5CrNiCu15-5 (1.4545) - Mit selbstverzehrender Elektrode umgeschmolzen (ESR oder VAR) - Lösungsgeglüht und ausscheidungsgehärtet (H1025) - Stangen zur spanenden Bearbeitung - a oder D ≤ 250 mm - 1 070 MPa ≤ Rm ≤ 1 200 MPa - Beste Güte (pq)

Série aérospatiale - Acier X5CrNiCu15-5 (1.4545) - Refondu à l'électrode consommable (ESR ou VAR) - Mis en solution et précipité (H1025) - Barres pour usinage - a ou D ≤ 250 mm - 1 070 MPa ≤ Rm ≤ 1 200 MPa - Première qualité (pq)

Le présent document spécifie les exigences relatives à :
Acier X5CrNiCu15-5 (1.4545)
Refondu à l'électrode consommable (ESR ou VAR)
Mis en solution et précipité (H1025)
Barres pour usinage
a ou D ≤ 250 mm
1 070 MPa ≤ Rm ≤ 1 200 MPa
Première qualité (pq)
pour les applications aérospatiales.
NOTE   Autre désignation : la désignation ASD-STAN du présent matériau est FE-PM1802.
Seule la composition chimique du présent document doit être prise en compte.

Aeronavtika - Jeklo X5CrNiCu15-5 (1.4545) - Pretaljeno s talilno elektrodo (ESR ali VAR) - Topilno žarjeno in izločevalno utrjeno (H1025) - Palice za obdelavo - a ali D ≤ 250 mm - 1070 MPa ≤ Rm ≤ 1200 MPa - Visoka stopnja kakovosti (pq)

Ta dokument določa zahteve, ki se navezujejo na:
jeklo X5CrNiCu15-5 (1.4545),
pretaljeno s talilno elektrodo (ESR ali VAR),
topilno žarjeno in izločevalno utrjeno (H1025),
palice za obdelavo,
a ali D ≤ 250 mm,
1070 MPa ≤ Rm ≤ 1200 MPa,
visoke stopnje kakovosti (pq)
za uporabo v aeronavtiki.
OPOMBA: Druga oznaka: Oznaka ASD-STAN tega materiala je FE-PM1802.
Upošteva se le kemijska sestava v skladu s tem dokumentom.

General Information

• Status: Published
• Public Enquiry End Date: 30-Nov-2020
• Publication Date: 23-Oct-2023
• 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: 20-Oct-2023
• Due Date: 25-Dec-2023
• Completion Date: 24-Oct-2023
• Ref Project: EN 4842:2023 - Aerospace series - Steel X5CrNiCu15-5 (1.4545) - Consumable electrode remelted (ESR or VAR) - Solution treated and precipitation treated (H1025) - Bars for machining - a or D ≤ 250 mm - 1 070 MPa ≤ Rm ≤ 1 200 MPa - Premium quality (pq)

Relations

• Revised: SIST EN 4842:2019 - Aerospace series - X5CrNiCu15-5 (1.4545) - Consumable electrode remelted (ESR or VAR) - Solution treated and precipitation treated (H1025) - Bar for machining - a or D ≤ 250 mm - 1 070 MPa ≤ Rm ≤ 1 200 MPa - Premium quality (pq)
• Effective Date: 19-Jan-2023

Overview

EN 4842:2023 is a CEN (ASD‑STAN) aerospace material standard that defines requirements for steel X5CrNiCu15‑5 (1.4545) produced by consumable‑electrode remelting (ESR or VAR) and supplied in the solution treated and precipitation‑treated condition H1025. The standard applies to bars for machining (a or D ≤ 250 mm) intended for aerospace applications and specifies a premium quality (pq) product with high mechanical performance (Rm 1 070–1 200 MPa).

Key identifiers and SEO keywords: EN 4842:2023, X5CrNiCu15‑5, 1.4545, H1025, ESR, VAR, aerospace steel bars, premium quality (pq).

Key topics and technical requirements

• Material & designation: Steel X5CrNiCu15‑5 (1.4545); ASD‑STAN designation FE‑PM1802.
• Melting method: Consumable electrode remelted - ESR or VAR to ensure low inclusion content and uniformity.
• Delivery condition / heat treatment:
  • Solution treat: 1 025 °C to 1 050 °C, t ≥ 30 min, air cool (or faster) to ≤ 30 °C.
  • Precipitation treat: 540 °C to 570 °C, t ≥ 4 h, air cool (or faster). (H1025 condition)
• Mechanical properties:
  • Tensile strength Rm: 1 070 MPa ≤ Rm ≤ 1 200 MPa.
  • Proof stress (Rp0.2): ≥ 1 000 MPa (as specified).
  • Elongation A: ≥ 11 %.
  • Hardness: HBW 321–375.
• Microstructure and cleanliness:
  • Fine, homogeneous martensitic structure.
  • Delta ferrite content ≤ 0.5 %.
  • Inclusion control assessed per ASTM E45 (Method D) with defined limits and a maximum total inclusion count for inspected fields.
• Inspection and surface:
  • Ultrasonic inspection per EN 4050‑4 with acceptance classes that vary by diameter.
  • Surface finish and roughness requirements for bars for machining (e.g., peeled/turned or smooth turned with Ra limits specified in the standard).
• Scope note: The document is part of the EN aerospace metallic materials series and replaces EN 4842:2019.

Practical applications & users

• Intended for aerospace structural and mechanical components where high strength, toughness and material cleanliness are critical (e.g., landing gear subcomponents, high‑load fittings, machined flight hardware).
• Primary users:
  • Aerospace material engineers and specification writers
  • Purchasing and quality teams sourcing aerospace grade bars
  • Metallurgists and heat‑treat shops
  • Manufacturers of machined aerospace parts requiring premium quality steel

Related standards

• EN 4700‑002 (technical specification for bars), EN 2043 (product qualification), EN 4050‑4 (UT acceptance), EN 2950 (micrographic atlas), EN 3874 / ISO 1143 (fatigue), ASTM E45 (inclusion assessment), SAE AMS 2315. Refer to EN 4842:2023 for precise acceptance classes, test methods and full requirements.

Standards Content (Sample)

SLOVENSKI STANDARD
01-december-2023
Aeronavtika - Jeklo X5CrNiCu15-5 (1.4545) - Pretaljeno s talilno elektrodo (ESR ali
VAR) - Topilno žarjeno in izločevalno utrjeno (H1025) - Palice za obdelavo - a ali D
≤ 250 mm - 1070 MPa ≤ Rm ≤ 1200 MPa - Visoka stopnja kakovosti (pq)
Aerospace series - Steel X5CrNiCu15-5 (1.4545) - Consumable electrode remelted
(ESR or VAR) - Solution treated and precipitation treated (H1025) - Bars for machining -
a or D ≤ 250 mm - 1 070 MPa ≤ Rm ≤ 1 200 MPa - Premium quality (pq)
Luft- und Raumfahrt - Stahl X5CrNiCu15-5 (1.4545) - Mit selbstverzehrender Elektrode
umgeschmolzen (ESR oder VAR) - Lösungsgeglüht und ausscheidungsgehärtet (H1025)
- Stangen zur spanenden Bearbeitung - a oder D ≤ 250 mm - 1 070 MPa ≤ Rm ≤ 1 200
MPa - Beste Güte (pq)
Série aérospatiale - Acier X5CrNiCu15-5 (1.4545) - Refondu à l'électrode consommable
(ESR ou VAR) - Mis en solution et précipité (H1025) - Barres pour usinage - a ou D ≤
250 mm - 1 070 MPa ≤ Rm ≤ 1 200 MPa - Première qualité (pq)
Ta slovenski standard je istoveten z: EN 4842:2023
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 4842
EUROPEAN STANDARD
NORME EUROPÉENNE
October 2023
EUROPÄISCHE NORM
ICS 49.025.15 Supersedes EN 4842:2019
English Version
Aerospace series - Steel X5CrNiCu15-5 (1.4545) -
Consumable electrode remelted (ESR or VAR) - Solution
treated and precipitation treated (H1025) - Bars for
machining - a or D  250 mm - 1 070 MPa  Rm  1 200
MPa - Premium quality (pq)
Série aérospatiale - Acier X5CrNiCu15-5 (1.4545) - Luft- und Raumfahrt - Stahl X5CrNiCu15-5 (1.4545) -
Refondu à l'électrode consommable (ESR ou VAR) - Mis Mit selbstverzehrender Elektrode umgeschmolzen
en solution et précipité (H1025) - Barres pour usinage (ESR oder VAR) - Lösungsgeglüht und
ausscheidungsgehärtet (H1025) - Stangen zur
- a ou D  250 mm - 1 070 MPa  Rm  1 200 MPa -
Première qualité (pq) spanenden Bearbeitung - a oder D  250 mm - 1 070
MPa  Rm  1 200 MPa - Beste Güte (pq)
This European Standard was approved by CEN on 16 July 2023.

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
© 2023 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 4842:2023 E
worldwide for CEN national Members.

Contents Page
European foreword . 3
Introduction . 4
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 6
4 Requirements . 6
Bibliography . 10

European foreword
This document (EN 4842:2023) 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
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 April 2024, and conflicting national standards shall be
withdrawn at the latest by April 2024.
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 4842:2019.
Compared to the previous edition EN 4842:2019 the test requirement has changed.
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, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,
Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Türkiye and the United Kingdom.
Introduction
This document is part of the series of metallic material standards for aerospace applications.
The general organization of this series is described in EN 4258.
This document has been prepared in accordance with EN 4500-005.

1 Scope
This document specifies the requirements relating to:
Steel X5CrNiCu15-5 (1.4545)
Consumable electrode remelted (ESR or VAR)
Solution treated an
...