EN 2635:2005

Overview

EN 2635:2005 is a European Standard developed by CEN for the aerospace sector, specifying requirements for aluminium alloy AL-P2014A in the T6511 temper, delivered as extruded bars and sections with cross-sectional dimension (a or D) up to 200 mm. A key feature of this standard is the control of peripheral coarse grain structure, which is critical for high-performance aerospace applications. This standard also allows, when specified by the purchaser, the supply of material in the T6510 temper. The requirements are designed to ensure consistent mechanical properties and high reliability of aluminum components used in demanding applications.

Key Topics

• Material Specification: Details the required chemical composition and physical form (extruded bar and section) for AL-P2014A alloy.
• Dimensions: Applies to products with cross-sectional width or diameter (a or D) not exceeding 200 mm.
• Temper Designation: Covers T6511 temper as standard, with optional supply in T6510 condition upon purchaser’s request.
• Peripheral Coarse Grain Control: Specifies monitoring and limits for coarse grain structures at the material’s periphery, ensuring integrity and performance.
• Mechanical Properties: Identifies requirements for proof stress, tensile strength, and elongation, delivering consistency across batches.
• Quality Assurance: Outlines inspection (marking, dimensional, defects) and batch uniformity requirements, enhancing traceability and reliability.
• Normative References: Incorporates other key standards such as EN 4258 (general metallic material standards organization), EN 4400-3 (wrought products technical specifications), and EN 4500-2 (drafting rules for aluminium material standards).

Applications

• Aerospace Components: Used primarily in the construction of aircraft structural elements, where aluminum alloy AL-P2014A’s properties-combined with strict coarse grain control-provide essential strength, machinability, and durability.
• Extruded Structural Parts: Ideal for aircraft frames, supports, and profiles requiring precise mechanical performance and resistance to grain-related defects.
• Specialized Engineering Projects: Suitable where high-reliability extruded aluminum products with tight grain structure and robust mechanical properties are demanded.
• Custom Requests: Enables supply for T6510 temper if particular engineering requirements specify its use.

In aerospace engineering, strict control of aluminium microstructure, as documented in EN 2635:2005, ensures safe operation and longevity of critical parts subjected to dynamic loads and environments.

Related Standards

• EN 4258: Provides the general organizational framework for aerospace metallic materials standards, helping users navigate related documentation.
• EN 4400-3: Specifies technical requirements for aluminium and aluminium alloy wrought products-including bars and sections-complementing EN 2635’s focus.
• EN 4500-2: Lays out drafting and presentation rules for standards concerning aluminium, aluminium alloys, and magnesium alloys, ensuring clarity and consistency in documentation.

For manufacturers, purchasers, and engineers in the aerospace industry, EN 2635:2005 is a critical reference for sourcing and validating extruded aluminum alloy products, ensuring compliance with European aerospace standards and optimizing safety, durability, and quality in finished components.

Keywords: EN 2635:2005, aluminium alloy AL-P2014A, T6511, extruded bar, extruded section, aerospace aluminium standard, peripheral coarse grain control, CEN, aerospace components, technical specification, European Standard.