SIST EN 3638:2026

Aerospace series - Heat resisting alloy X6NiCrTiMoV26-15 (1.4980) - Consumable electrode remelted - Solution treated and precipitation treated - Sheets, strips and plates - 0,5 mm ≤ a ≤ 10 mm

This document specifies the requirements relating to:
Heat-resisting alloy X6NiCrTiMoV26-15 (1.4980)
Consumable electrode remelted
Solution treated and precipitation treated
Sheets, strips and plates
0,5 ≤ a ≤ 10 mm
for aerospace applications.
W.nr: 1.4980.
ASD-STAN designation: FE-PA2601.

Luft- und Raumfahrt - Hochwarmfeste Legierung X6NiCrTiMoV26-15 (1.4980) - Mit selbstverzehrender Elektrode umgeschmolzen - Lösungsgeglüht und ausgelagert - Bleche, Bänder und Platten - 0,5 mm ≤ a ≤ 10 mm

No Scope available

Série aérospatiale - Alliage résistant à chaud X6NiCrTiMoV26-15 (1.4980) - Élaboré par électrode consommable - Mis en solution et précipité - Tôles, bandes et plaques - 0,5 mm ≤ a ≤ 10 mm

Le présent document spécifie les exigences relatives à :
Alliage résistant à chaud X6NiCrTiMoV26-15 (1.4980)
Refondu à l‘électrode consommable
Mis en solution et précipité
Tôles, bandes et plaques
0,5 ≤ a ≤ 10 mm
pour les applications aérospatiales.
W.nr : 1.4980.
Désignation ASD-STAN : FE-PA2601.

Aeronavtika - Toplotno odporna zlitina X6NiCrTiMoV26-15 (1.4980) - Pretaljeno s talilno elektrodo - Žarjeno v topilu in utrjeno - Pločevina, trakovi in plošče - 0,5 mm ≤ a ≤ 10 mm

General Information

• Status: Published
• Public Enquiry End Date: 11-Sep-2024
• Publication Date: 15-Dec-2025
• ICS: 49.025.05 - Ferrous alloys in general
• ICS: 49.025.10 - Steels
• ICS: 77.140.50 - Flat steel products and semi-products
• Technical Committee: I13 - Imaginarni 13
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 10-Dec-2025
• Due Date: 14-Feb-2026
• Completion Date: 16-Dec-2025
• Ref Project: EN 3638:2025 - Aerospace series - Heat-resisting alloy X6NiCrTiMoV26-15 (1.4980) - Consumable electrode remelted - Solution treated and precipitation treated - Sheets, strips and plates - 0,5 ≤ a ≤ 10 mm

Relations

• Revised: SIST EN 3638:2009 - Aerospace series - Heat resisting alloy FE-PA2601 (X6NiCrTiMoV26-15) - Consumable electrode remelted - Solution and precipitation treated - Sheet, strip and plate - 0,5 mm ≤ a ≤ 10 mm
• Effective Date: 19-Jan-2023

Overview

EN 3638:2025 is a CEN/AeroSpace (ASD‑STAN) material standard that specifies requirements for the heat‑resisting alloy X6NiCrTiMoV26‑15 (W.nr. 1.4980; ASD‑STAN: FE‑PA2601) in the form of consumable‑electrode remelted sheets, strips and plates with thicknesses 0.5 mm ≤ a ≤ 10 mm. The document covers chemical composition, melting and processing route, heat‑treatment conditions (solution treated and precipitation treated), mechanical property limits and inspection/qualification methods tailored for aerospace applications. EN 3638:2025 supersedes EN 3638:2007 and was approved by CEN in October 2025.

Key topics and requirements

• Material designation and chemistry: Defines alloy X6NiCrTiMoV26‑15 (1.4980) with specified element ranges (e.g., Ni, Cr, Mo, Ti, V and Fe as balance) as listed in Table 1.
• Production route: Must be consumable electrode remelted and rolled into sheets, strips or plates.
• Dimensional scope: Applicable to flat products with thickness 0.5–10 mm.
• Heat treatments
  • Delivery condition: Solution treated and descaled - specified at 980 °C ±10 °C for the indicated minimum time.
  • Use condition: Solution treated followed by precipitation (age) treatment - e.g., ~720 °C ±10 °C for a specified duration (see Table 1).
• Mechanical properties and tests: Includes limits for proof stress (Rp0.2), tensile strength (Rm), elongation (A) and hardness, with different acceptance values for delivery and use conditions and for thickness ranges.
• Inspection & qualification: Visual inspection, ultrasonic testing (EN 4050‑4 for UT acceptance), dimensional and marking checks and product qualification per EN 2043. Grain size, external/internal imperfection classes and test‑piece selection follow EN 4700‑001.

Applications and users

• Primary application: Structural and high‑temperature aerospace components where heat‑resisting wrought stainless/heat‑resisting alloys are required in thin flat form (0.5–10 mm).
• Who uses this standard
  • Aerospace materials engineers and procurement specialists selecting sheet/strip/plate alloys.
  • Manufacturers and rolling mills producing remelted X6NiCrTiMoV26‑15 products.
  • Quality, inspection and certification teams performing acceptance testing and product qualification.
  • Design engineers specifying material and heat‑treatment conditions for components exposed to elevated temperatures.

Related standards

• EN 4700‑001 - Steel and heat‑resisting alloys: technical specification for plates, sheets and strips
• EN 4050‑4 - Ultrasonic inspection acceptance criteria
• EN 2043 - General requirements for semi‑finished product qualification
• EN 4258 and EN 4500‑003 (organizational and drafting rules for aerospace metallic material standards)

For procurement, certification and design, consult the full EN 3638:2025 text and referenced standards to ensure compliance with the detailed processing, testing and qualification requirements.

Standards Content (Sample)

SLOVENSKI STANDARD
01-februar-2026
Aeronavtika - Toplotno odporna zlitina X6NiCrTiMoV26-15 (1.4980) - Pretaljeno s
talilno elektrodo - Žarjeno v topilu in utrjeno - Pločevina, trakovi in plošče - 0,5 mm
≤ a ≤ 10 mm
Aerospace series - Heat resisting alloy X6NiCrTiMoV26-15 (1.4980) - Consumable
electrode remelted - Solution treated and precipitation treated - Sheets, strips and plates
- 0,5 mm ≤ a ≤ 10 mm
Luft- und Raumfahrt - Hochwarmfeste Legierung X6NiCrTiMoV26-15 (1.4980) - Mit
selbstverzehrender Elektrode umgeschmolzen - Lösungsgeglüht und ausgelagert -
Bleche, Bänder und Platten - 0,5 mm ≤ a ≤ 10 mm
Série aérospatiale - Alliage résistant à chaud X6NiCrTiMoV26-15 (1.4980) - Élaboré par
électrode consommable - Mis en solution et précipité - Tôles, bandes et plaques - 0,5
mm ≤ a ≤ 10 mm
Ta slovenski standard je istoveten z: EN 3638:2025
ICS:
49.025.05 Železove zlitine na splošno Ferrous alloys in general
49.025.10 Jekla Steels
77.140.50 Ploščati jekleni izdelki in Flat steel products and semi-
polizdelki products
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN 3638
EUROPEAN STANDARD
NORME EUROPÉENNE
December 2025
EUROPÄISCHE NORM
ICS 49.025.05 Supersedes EN 3638:2007
English Version
Aerospace series - Heat-resisting alloy X6NiCrTiMoV26-15
(1.4980) - Consumable electrode remelted - Solution
treated and precipitation treated - Sheets, strips and plates
- 0,5  a  10 mm
Série aérospatiale - Alliage résistant à chaud Luft- und Raumfahrt - Hochwarmfeste Legierung
X6NiCrTiMoV26-15 (1.4980) - Refondu à l'électrode X6NiCrTiMoV26 15 (1.4980) - Mit selbstverzehrender
consommable - Mis en solution et précipité - Tôles, Elektrode umgeschmolzen - Lösungsgeglüht und
bandes et plaques - 0,5 mm  a  10 mm ausscheidungsgehärtet - Bleche, Bänder und Platten -
0,5 mm  a  10 mm
This European Standard was approved by CEN on 5 October 2025.

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
© 2025 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 3638:2025 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 3638:2025) 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 June 2026, and conflicting national standards shall be withdrawn at
the latest by June 2026.
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 3638:2007.
This document includes the following significant technical changes with re
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