EN 2116:2009

Overview

EN 2116:2009 is a European Standard issued by CEN that specifies technical requirements for aluminium alloy 2017A-T42 in the form of wire used for solid rivets with a diameter (D) less than or equal to 10 mm. This standard is specifically tailored for aerospace applications, where material properties and manufacturing precision are critical for safety and performance. EN 2116:2009 is part of the aerospace metallic materials series, ensuring harmonization and quality in aerospace manufacturing industries across Europe.

The document was developed by the Aerospace and Defence Industries Association of Europe (ASD-STAN) and has been adopted as a national standard by CEN members. Compliance with EN 2116:2009 ensures that aluminium wire used in solid rivets meets stringent mechanical and compositional standards, contributing to the high reliability demanded in aerospace structures.

Key Topics

• Material Specification: EN 2116:2009 covers aluminium alloy 2017A-T42, known for its strength and durability suitable for aerospace rivets.
• Wire Dimensions: It applies only to wire diameters of D ≤ 10 mm, used for manufacturing solid rivets.
• Chemical Composition: Specifies maximum and minimum limits for key alloying elements such as silicon (Si), iron (Fe), copper (Cu), manganese (Mn), magnesium (Mg), chromium (Cr), titanium (Ti + Zr), and others.
• Mechanical Properties: Includes requirements on tensile strength (Rm between 210 and 310 MPa), shear strength (Rc between 260 and 290 MPa), and heat treatment protocols (particularly T42 treatment).
• Manufacturing Process: Defines cold drawing as the method of production and stipulates delivery conditions such as H14 temper, with heat treatment details for achieving the T42 condition.
• Testing and Inspection: References tests for grain size (ASTM E112-96), dimensional tolerances, marking, external defect inspection, and sample requirements from EN 2070-6 for aerospace rivet wire.
• Quality and Compliance: Emphasizes adherence to related aerospace standards and requires a qualification programme agreed upon by manufacturers and purchasers.

Applications

• Aerospace Riveting: EN 2116:2009 aluminium alloy 2017A-T42 wire is primarily intended for solid rivets used in the construction and assembly of aircraft structures, where high strength-to-weight ratio and fatigue resistance are vital.
• Aircraft Manufacturing: Provides a reliable material basis for manufacturing rivets that join aluminium panels, frames, and components subjected to dynamic loads.
• Defense Industry: The standard supports aerospace defense projects requiring materials with traceable properties and conformity to international aerospace material protocols.
• Maintenance and Repair: Enables industry maintenance teams to source repair rivets matching original manufacturing specifications, ensuring consistent structural integrity.

Related Standards

EN 2116:2009 is part of a comprehensive suite of European aerospace metallic material standards, interlinked with:

• EN 2070-6: Technical specification specifically for aluminium and aluminium alloy wrought products-Part 6: Rivet wire.
• EN 4258: Governs the general organization of aerospace metallic material standards and their application.
• EN 4500-2: Provides drafting and presentation rules for aluminium, aluminium alloys, and magnesium alloy standards.
• EN 2032-2: Assigns coding for metallurgical conditions in delivery.
• TR 2410: Clarifies the relationship between dimensional and material standards, guiding tolerance conformity.
• ASTM E112-96: International reference for grain size measurement critical to assessing material quality.

Compliance with EN 2116:2009 ensures manufacturers and users in the aerospace sector achieve high standards of quality, traceability, and performance for aluminium alloy 2017A-T42 wire used in solid rivets. This enhances safety and durability of aerospace structures by standardizing material properties and testing methods, supporting international collaboration and regulatory adherence.