EN 4317:2025

Overview

EN 4317:2025 is a European standard developed by CEN under the ASD-STAN agreement, focusing on the aerospace series of heat-resisting alloys. Specifically, it covers the heat-resisting alloy X6NiCrTiMoV26-15 (1.4980) in the form of consumable electrode remelted forging stock with dimensions a or D ≤ 200 mm that is not heat treated. This standard ensures consistent quality and technical specifications essential for aerospace manufacturing and engineering.

The standard supersedes EN 4317:2007 and harmonizes industry requirements for materials designed for critical aerospace applications where resistance to high temperatures is mandatory. It provides manufacturers and engineers with a comprehensive framework for chemical composition, mechanical properties, and testing methods of this particular alloy.

Key Topics

• Material Designation: Defines the alloy X6NiCrTiMoV26-15, also known under W.nr 1.4980 and ASD-STAN designation FE-PA2601, tailored for aerospace use.
• Chemical Composition: Specifies exact ranges for carbon, silicon, manganese, phosphorus, sulfur, aluminum, boron, chromium, molybdenum, nickel, titanium, and vanadium, ensuring consistency and high performance.
• Manufacturing Process: Covers the consumable electrode remelted method, contributing to impurity reduction and uniform material quality.
• Forging Stock: Details dimensions limited to a or D ≤ 200 mm, suitable for forging applications in aerospace components.
• Delivery Condition: The alloy is delivered in a non-heat-treated state, coded as 'U', with specific mechanical property requirements such as proof stress, tensile strength, elongation, and hardness values at ambient and elevated temperatures.
• Testing and Inspection: Includes mandatory visual (VT), ultrasonic (UT) tests, dimensional and marking inspections, aligned with EN 2860-2 and EN 2043 for product qualification.
• Heat Treatment References: Notes on solution treatment and precipitation heat treatment processes for potential material conditioning.
• Standard Compliance: Structured in accordance with EN 4500-003 rules for drafting material standards and aerospace metallic material series (EN 4258).

Applications

The EN 4317:2025 standard applies primarily to the aerospace sector, where materials must withstand extreme temperatures and mechanical stresses without degradation. Typical applications include:

• Turbine components in jet engines requiring exceptional heat resistance.
• Structural aerospace forging parts exposed to thermal cycling.
• High-performance fasteners and fittings where longevity and safety are critical.
• Components in combustion chambers, exhaust systems, and related high-temperature environments.

This standard provides confidence in product quality, material traceability, and performance consistency, helping aerospace manufacturers deliver reliable, safe, and high-function aerospace parts.

Related Standards

• EN 2860-2: Technical specifications for heat-resistant alloys forging stock and forgings, referenced extensively for manufacturing guidelines and mechanical testing.
• EN 2043: General requirements for semi-finished product qualification in aerospace metallic materials, ensuring thorough qualification processes.
• EN 4258: Outlines the general organization and links between European standards in aerospace metallic materials, providing foundational context for EN 4317:2025.
• EN 4500-003: Specific rules for drafting and presenting material standards related to heat-resisting alloys, guiding the structure of this document.

Summary

EN 4317:2025 standardizes the technical requirements for heat-resisting alloy X6NiCrTiMoV26-15 (1.4980) used as non-heat-treated forging stock up to 200 mm in diameter for aerospace applications. It ensures high performance under thermal stress, backed by strict composition limits, manufacturing methods, and testing protocols. By complying with this standard, aerospace manufacturers can ensure their components meet rigorous safety and durability criteria essential for advanced aerospace technologies.

Keywords: EN 4317:2025, aerospace heat-resisting alloy, X6NiCrTiMoV26-15, forging stock standard, consumable electrode remelted, aerospace material standards, non heat treated alloy, aerospace forgings, heat resistant alloys, aerospace manufacturing standards, EN 2860-2, aerospace metal qualification