SIST EN 2090:2005

Overview

SIST EN 2090:2005 is a European standard specifying the technical and quality requirements for aerospace-grade aluminium alloy AL-P2024-T3 clad sheets and strips with thicknesses ranging from 0.3 mm to 6 mm. Published by the European Committee for Standardization (CEN), this standard is part of the aerospace materials series designed to ensure consistent manufacturing quality, mechanical performance, and safety in aerospace applications.

The standard addresses chemical composition, mechanical properties, delivery conditions, and testing methods specific to the AL-P2024-T3 alloy, which is widely used in the aerospace industry due to its excellent strength-to-weight ratio and fatigue resistance.

Key Topics

• Material Specifications

  • Aluminium alloy AL-P2024-T3 clad sheet and strip
  • Thickness range: 0.3 mm ≤ thickness ≤ 6 mm
  • Rolled production method with clad surface layers for corrosion resistance

• Chemical Composition Limits

  • Defines elemental composition ranges for silicon (Si), iron (Fe), copper (Cu), manganese (Mn), magnesium (Mg), chromium (Cr), zinc (Zn), titanium (Ti), and aluminium (Al) base content
  • Ensures alloy homogeneity and compliance with aerospace material standards

• Mechanical Properties

  • Proof stress and tensile strength requirements varying with sheet/strip thickness
  • Minimum elongation values demonstrating ductility and formability
  • Bending capabilities with specified bend radii for quality control

• Delivery Condition and Heat Treatment

  • Material supplied in the T3 temper condition (heat treatment & cold work) to meet aerospace reliability standards
  • Precise temperature and quenching guidelines included to ensure mechanical consistency

• Testing and Inspection

  • Reference to EN 4400-2 for technical specifications including testing samples, test pieces, and quality assurance procedures
  • Requirements for external defect inspection, chemical cladding diffusion, electrical conductivity, marking, and dimensional inspection

• Standardization and Compliance

  • Prepared in accordance with EN 4500-2 rules for drafting aluminium alloy standards
  • Part of a broader EN metallic materials aerospace series including EN 4258 for general organization and EN 4400-2 for wrought products

Applications

SIST EN 2090:2005 aluminium alloy AL-P2024-T3 clad sheets and strips are primarily used in aerospace manufacturing where lightweight, high-strength materials are critical. Typical applications include:

• Aircraft structural components such as fuselage skins, wing panels, and internal framework
• Aerospace assemblies requiring excellent fatigue resistance and mechanical strength
• Components exposed to varying environmental conditions benefiting from clad corrosion protection
• Precision-formed aerospace parts requiring controlled bending and elongation properties

This standard supports manufacturers and purchasers in ensuring materials meet stringent aerospace quality, performance, and safety requirements, facilitating international compliance and interoperability in aerospace supply chains.

Related Standards

• EN 4258: Aerospace series – General organization and standardization framework for metallic materials
• EN 4400-2: Aerospace series – Technical specifications for aluminium and aluminium alloy wrought sheets and strips
• EN 4500-2: Aerospace series – Rules for drafting and presentation of standards for aluminium alloys and related metals

Adherence to these interconnected standards ensures comprehensive quality control from raw material specification to final product delivery, guaranteeing high-performance aluminium alloys suited for demanding aerospace environments.

This standard is essential for aerospace engineers, material scientists, manufacturers, and quality assurance teams involved in producing or procuring aluminium alloy sheets and strips for aerospace use. Compliance with SIST EN 2090:2005 helps maintain material integrity, enhances aircraft safety, and supports innovation in aerospace material technologies.