SIST EN 2302:2023

Aerospace series - Heat-resisting nickel base alloy NiCr20Co3Fe3 - Rm ≥ 650 MPa - Sheets and strips, cold rolled - 0,25 mm < a ≤ 3 mm

This document specifies the requirements relating to:
Heat-resisting nickel base alloy NiCr20Co3Fe3
Rm ≥ 650 MPa
Sheets and strips, cold rolled
0,25 mm < a ≤ 3 mm
for aerospace applications.

Luft- und Raumfahrt - Hochwarmfeste Nickellegierung NiCr20Co3Fe3 - Rm ≥ 650 MPa - Bleche und Bänder, kaltgewalzt - 0,25 mm < a ≤ 3 mm

Dieses Dokument legt die Anforderungen an:
Hochwarmfeste Nickellegierung NiCr20Co3Fe3
Rm ≥ 650 MPa
Bleche und Bänder, kaltgewalzt
0,25 mm < a ≤ 3 mm
für Anwendungen in der Luft- und Raumfahrt fest.

Série aérospatiale - Alliage résistant à chaud base nickel NiCr20Co3Fe3 - Rm ≥ 650 MPa - Tôles et bandes, laminées à froid - 0,25 mm < a ≤ 3 mm

Le présent document spécifie les exigences relatives à :
Alliage résistant à chaud base nickel NiCr20Co3Fe3
Rm ≥ 650 MPa
Tôles et bandes, laminées à froid
0,25 mm < a ≤ 3 mm
pour les applications aérospatiales.

Aeronavtika - Toplotnoodporne zlitine na nikljevi osnovi Ni Cr20Co3Fe3 - Rm ≥ 650 MPa - Pločevina in trakovi, hladno valjani - 0,25 mm < a ≤ 3 mm

Ta dokument določa zahteve, ki se navezujejo na:
toplotno odporne zlitine na nikljevi osnovi Ni Cr20Co3Fe3
Rm ≥ 650 MPa
plošče in trakove, hladno valjane
0,25 mm < a ≤ 3 mm
za uporabo v aeronavtiki.

General Information

• Status: Published
• Public Enquiry End Date: 14-Sep-2022
• Publication Date: 22-Oct-2023
• ICS: 49.025.15 - Non-ferrous alloys in general
• ICS: 77.120.40 - Nickel, chromium and their alloys
• Technical Committee: I13 - Imaginarni 13
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 11-Oct-2023
• Due Date: 16-Dec-2023
• Completion Date: 23-Oct-2023
• Ref Project: EN 2302:2023 - Aerospace series - Heat-resisting nickel base alloy NiCr20Co3Fe3 - Rm ≥ 650 MPa - Sheets and strips, cold rolled - 0,25 mm < a ≤ 3 mm

Overview

EN 2302:2023 is a CEN (Aerospace series) standard that specifies material and product requirements for the heat‑resisting nickel‑base alloy NiCr20Co3Fe3 in the form of cold‑rolled sheets and strips for aerospace applications. The standard covers product form, chemical composition ranges, permitted melting and processing routes, delivery and heat‑treatment conditions, and mechanical property limits for thicknesses in the range 0.25 mm < a ≤ 3 mm. The alloy is characterized by a guaranteed tensile strength Rm ≥ 650 MPa (with higher limits for some thickness ranges) appropriate for high‑temperature aerospace components.

Key topics and technical requirements

• Material designation: Heat‑resisting nickel base alloy NiCr20Co3Fe3.
• Chemical composition (typical ranges listed):
  • C: 0.08–0.15%
  • Si ≤ 1.0%, Mn ≤ 1.0%, S ≤ 0.020%
  • Co ≤ 5.0%
  • Cr: 18.0–21.0%
  • Cu ≤ 0.5%, Fe ≤ 5.0%
  • Pb ≤ 0.005%
  • Ti: 0.20–0.60%
  • Ni: balance
• Melting methods allowed: air‑melted, vacuum‑melted, air‑melted then vacuum refined, or consumable‑electrode remelted.
• Product form & production: Sheets and strips, cold‑rolled; thickness 0.25 mm < a ≤ 3 mm.
• Delivery condition: Annealed and descaled or bright annealed. Delivery code: U.
• Heat treatment: 1 000 °C ≤ θ ≤ 1 050 °C with air cooling (AC) or cooling in protective atmosphere; continuous‑furnace strip may use furnace set slightly above 1 050 °C.
• Mechanical property requirements: Specified by thickness bands. General requirement Rm ≥ 650 MPa, with higher Rm and proof stress (Rp0.2) limits for thicker material ranges; minimum elongation thresholds (A50 mm) are given. Hardness limits and bending criteria are also specified.
• Testing & inspection: Test specimens, visual testing (VT), marking and dimensional inspection are performed in accordance with EN 4700‑001 and referenced aerospace procedures.

Applications and users

• Who uses EN 2302:2023: aerospace materials engineers, OEMs, suppliers of engine and hot‑section components, quality/inspection teams, procurement specialists and certification bodies.
• Typical applications: high‑temperature structural or engine components where a heat‑resisting nickel alloy in thin sheet/strip form is required - e.g., turbine or combustor components, heat shields, and other aero‑engine and airframe parts subject to elevated temperatures and demanding strength requirements.
• Value: Enables consistent procurement, manufacturing and qualification of cold‑rolled NiCr20Co3Fe3 sheets/strips meeting defined mechanical and chemical requirements for aerospace use.

Related standards

• EN 4700‑001 - Aerospace series: Plate, sheet and strip technical specification (referenced for tests and delivery).
• EN 4258, EN 4500‑003 and ASD‑STAN rules referenced for organization and drafting of aerospace metallic material standards.

Standards Content (Sample)

SLOVENSKI STANDARD
01-december-2023
Aeronavtika - Toplotnoodporne zlitine na nikljevi osnovi Ni Cr20Co3Fe3 - Rm ≥ 650
MPa - Pločevina in trakovi, hladno valjani - 0,25 mm < a ≤ 3 mm
Aerospace series - Heat-resisting nickel base alloy NiCr20Co3Fe3 - Rm ≥ 650 MPa -
Sheets and strips, cold rolled - 0,25 mm < a ≤ 3 mm
Luft- und Raumfahrt - Hochwarmfeste Nickellegierung NiCr20Co3Fe3 - Rm ≥ 650 MPa -
Bleche und Bänder, kaltgewalzt - 0,25 mm < a ≤ 3 mm
Série aérospatiale - Alliage résistant à chaud base nickel NiCr20Co3Fe3 - Rm ≥ 650
MPa - Tôles et bandes, laminées à froid - 0,25 mm < a ≤ 3 mm
Ta slovenski standard je istoveten z: EN 2302:2023
ICS:
49.025.15 Neželezove zlitine na Non-ferrous alloys in general
splošno
77.120.40 Nikelj, krom in njune zlitine Nickel, chromium and their
alloys
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN 2302
EUROPEAN STANDARD
NORME EUROPÉENNE
September 2023
EUROPÄISCHE NORM
ICS 49.025.15
English Version
Aerospace series - Heat-resisting nickel base alloy
NiCr20Co3Fe3 - R  650 MPa - Sheets and strips, cold
m
rolled - 0,25 mm < a  3 mm
Série aérospatiale - Alliage résistant à chaud base Luft- und Raumfahrt - Hochwarmfeste Nickellegierung
nickel NiCr20Co3Fe3 - R  650 MPa - Tôles et bandes, NiCr20Co3Fe3 - R  650 MPa - Bleche und Bänder,
m m
laminées à froid - 0,25 mm < a  3 mm kaltgewalzt - 0,25 mm < a  3 mm
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.

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Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
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C O M I T É E U R O P É E N D E N O R M A L I S A T I O N

E U R O P Ä I S C H E S K O M I T E E F Ü R N O R M U N G

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© 2023 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 2302:2023 E
worldwide for CEN national Members.

Contents Page
European foreword . 3
Introduction . 4
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 5
4 Requirements . 5
Bibliography . 9

European foreword
This document (EN 2302:2023) 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 March 2024, and conflicting national standards shall be
withdrawn at the latest by March 2024.
Attention is drawn to the possibility th
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