EN 4379:2007
(Main)Aerospace series - Heat resisting alloy NI-PH3601 (NiCr22Mo9Nb) - Solution treated, forging De ≤ 200 mm
Aerospace series - Heat resisting alloy NI-PH3601 (NiCr22Mo9Nb) - Solution treated, forging De ≤ 200 mm
This standard specifies the requirements relating to:
Heat resisting alloy NI-PH3601 (NiCr22Mo9Nb) - Solution treated, forging De ≤ 200 mm
for aerospace applications.
Luft- und Raumfahrt - Hochwarmfeste Legierung NI-PH3601 (NiCr22Mo9Nb) - Lösungsgeglüht, Schmiedestücke und Gesenkschmiedestücke De ≤ 200 mm
Série aérospatiale - Alliage résistant à chaud NI-PH3601 (NiCr22Mo9Nb) - Mis en solution, pièces forgées et pièces matricées De ≤ 200 mm
Aeronavtika - Zlitina NI-PH3601 (NiCr22Mo9Nb), odporna proti vročini - Topilno žarjenje, odkovki in utopno kovani odkovki De ≤ 200 mm
General Information
- Status
- Published
- Publication Date
- 13-Nov-2007
- Withdrawal Date
- 30-May-2008
- Technical Committee
- ASD-STAN - Aerospace
- Drafting Committee
- ASD-STAN/D 4 - Metallic
- Current Stage
- 9093 - Decision to confirm - Review Enquiry
- Start Date
- 30-Jun-2017
- Completion Date
- 28-Jan-2026
Relations
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
Overview
EN 4379:2007 (CEN) is a European aerospace material standard that specifies requirements for the heat‑resisting nickel alloy NI‑PH3601 (NiCr22Mo9Nb) in the form of solution‑treated forgings with a maximum envelope dimension De ≤ 200 mm. Prepared under the ASD‑STAN/CEN process, the standard defines chemical, metallurgical, mechanical and inspection requirements for forgings intended for high‑temperature aerospace service.
Key topics and technical requirements
- Material designation: NI‑PH3601 (chemical system NiCr22Mo9Nb). The standard sets the compositional limits and element controls appropriate for this nickel‑chromium‑molybdenum‑niobium alloy (detailed element limits are given in the standard text).
- Form and size: Forgings produced from specified forging stock; maximum envelope diameter De ≤ 200 mm.
- Delivery condition: Solution treated (heat treatment specified in the standard).
- Heat treatment: Solution treat at 950 °C to 1 040 °C, hold ≥ 1 h, followed by air cooling (AC) or faster.
- Melting method: Consumable electrode remelted (CER) to ensure clean melt quality.
- Mechanical properties: The standard specifies minimum tensile and proof stress, elongation and maximum hardness values for the delivery condition (e.g., proof stress and tensile strength minima and hardness ≤ 290 HB). Exact property limits are given by diameter range in the standard.
- Microstructure & defects: Grain‑size and external defect acceptance criteria (no cracks, laps or folds); permitted minor deviations are quantified.
- Testing & inspection: Test piece selection, sampling, dimensional and marking inspections reference EN 2860‑3 and the EN 4379 clauses for pre‑production and production forgings.
- Qualification: Product qualification and any special qualification programme to be agreed between manufacturer and purchaser.
Applications and users
EN 4379:2007 is targeted at aerospace supply chain stakeholders who specify, produce or qualify high‑temperature nickel alloy forgings, including:
- Aerospace OEMs and engine manufacturers specifying material for hot components
- Forging producers and heat‑treaters supplying NI‑PH3601 forgings
- Quality, procurement and metallurgical engineers responsible for material selection, inspection and certification
Typical applications include high‑temperature aerospace components and structural parts where heat‑resisting nickel alloys are required (see the standard for permitted uses and property requirements).
Related standards
- EN 2860‑3 - Forging stock and forgings - technical specification (pre‑production & production forgings)
- EN 3671 - NI‑PH3601 non heat‑treated forging stock
- EN 4258 - Organization of aerospace metallic standards
- EN 4500‑3 - Rules for drafting heat‑resisting alloy standards
For procurement, design or certification work, consult the full EN 4379:2007 text for complete chemical limits, mechanical property tables, sampling plans and acceptance criteria.
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Frequently Asked Questions
EN 4379:2007 is a standard published by the European Committee for Standardization (CEN). Its full title is "Aerospace series - Heat resisting alloy NI-PH3601 (NiCr22Mo9Nb) - Solution treated, forging De ≤ 200 mm". This standard covers: This standard specifies the requirements relating to: Heat resisting alloy NI-PH3601 (NiCr22Mo9Nb) - Solution treated, forging De ≤ 200 mm for aerospace applications.
This standard specifies the requirements relating to: Heat resisting alloy NI-PH3601 (NiCr22Mo9Nb) - Solution treated, forging De ≤ 200 mm for aerospace applications.
EN 4379:2007 is classified under the following ICS (International Classification for Standards) categories: 49.025.15 - Non-ferrous alloys in general. The ICS classification helps identify the subject area and facilitates finding related standards.
EN 4379:2007 has the following relationships with other standards: It is inter standard links to EN 3671:2007, EN 4258:2024, EN 4808:2017, EN 4802:2017, EN 4806:2017, EN 4804:2017, EN 4632-005:2009. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
EN 4379:2007 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)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.PP49.025.15Neželezove zlitine na splošnoNon-ferrous alloys in generalICS:Ta slovenski standard je istoveten z:EN 4379:2007SIST EN 4379:2009en,de01-april-2009SIST EN 4379:2009SLOVENSKI
STANDARD
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 4379
November 2007 ICS 49.025.15 English Version
Aerospace series - Heat resisting alloy NI-PH3601 (NiCr22Mo9Nb) - Solution treated, forging De ≤ 200 mm
Série aérospatiale - Alliage résistant à chaud
NI-PH3601 (NiCr22Mo9Nb) - Mis en solution, pièces forgées et pièces matricées De ≤ 200 mm
Luft- und Raumfahrt - Hochwarmfeste Legierung NI-PH3601 (NiCr22Mo9Nb) - Lösungsgeglüht, Schmiedestücke und Gesenkschmiedestücke De ≤ 200 mm This European Standard was approved by CEN on 15 March 2007.
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 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 Management Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36
B-1050 Brussels © 2007 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 4379:2007: ESIST EN 4379:2009
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