EN 2119:2017

Overview

EN 2119:2017 is a European Standard established by CEN for aerospace applications involving heat resisting alloy FE-PA2601 (X6NiCrTiMoV26-15). This standard specifies the technical requirements for solution treated and precipitation treated wires used specifically for rivets, with diameters ranging from 2 mm to 10 mm, and a minimum tensile strength (Rm) of 960 MPa. The alloy is designed to withstand high temperatures, making it ideal for critical aerospace structural components where heat resistance and mechanical performance are paramount.

The standard was prepared by the Aerospace and Defence Industries Association of Europe (ASD-STAN) and aligns with other aerospace metallic material standards to ensure consistency and reliability in material selection and testing. It establishes critical parameters such as chemical composition, heat treatment, mechanical properties, dimensional tolerances, and product inspection methods.

Key Topics

• Material Specification: Defines heat resisting alloy FE-PA2601 (X6NiCrTiMoV26-15), emphasizing its chemical composition with an alloy basis of nickel, chromium, molybdenum, titanium, and vanadium to meet aerospace industry demands.

• Mechanical Properties: Details include a required minimum tensile strength (Rm) of 960 MPa for wires, ensuring durability and performance under stress. The standard also specifies hardness and shear strength requirements, crucial for rivet applications.

• Heat Treatment: Specifies the solution treatment range (900 °C to 930 °C) followed by precipitation treatment (680 °C to 780 °C) to achieve the desired microstructure and mechanical strength.

• Dimensional Requirements: Applicable to wire diameters between 2 mm and 10 mm, suitable for precise rivet manufacturing.

• Testing and Inspection: Incorporates references to related EN standards such as EN 3238 (shear test) and EN 4700 series (wire technical specifications and testing), establishing quality assurance methods including visual inspections, grain size analysis, bending tests, and dimensional checks.

• Product Qualification: Calls for coordination between manufacturers and purchasers on qualification programs per EN 2043, assuring compliance with aerospace standards.

Applications

• Aerospace Riveting: These wires are specifically designed for manufacturing rivets that are used in aerospace structures where heat resistance is crucial, such as engine components, airframes, and heat-exposed assemblies.

• High-Temperature Environments: The alloy’s superior mechanical properties at elevated temperatures make it ideal for use in environments exposed to thermal stress and oxidation.

• Structural Fastening: Supports reliable fastening solutions that maintain strength and integrity under rigorous aerospace operating conditions.

• Defense and Space Industries: Meets stringent industry standards necessary for aerospace and defense components, including those exposed to extreme mechanical and thermal loading.

Related Standards

• EN 2043 – Aerospace series: General requirements for semi-finished product qualification, excluding forgings and castings. Important for qualification procedures relevant to EN 2119 materials.

• EN 3238 – Aerospace series: Test method for shear strength of wires and rivets, ensuring mechanical suitability.

• EN 4258 – Aerospace series: General organization of standardization linking different types of EN metallic material standards.

• EN 4500-003 – Aerospace series: Specific drafting and presentation rules for heat resisting alloys, which guide the documentation and standard format.

• EN 4700-002 & EN 4700-004 – Aerospace series: Technical specifications covering steel and heat resisting alloy wrought products including bars, sections, and wires, which provide complementary requirements and testing procedures.

By adhering to EN 2119:2017, aerospace manufacturers ensure that heat resisting alloy wires for rivets meet rigorous mechanical, chemical, and structural criteria. This standard plays a vital role in ensuring flight safety, component longevity, and reliable performance in demanding aerospace environments.