SIST EN 4006:2009

Overview

SIST EN 4006:2009 is a European standard developed by CEN that specifies the technical requirements for aluminium alloy AL-P6082 in T4 or T42 temper conditions. This standard covers sheets and strips with thicknesses ranging from 0.4 mm to 6 mm, designed specifically for aerospace applications. SIST EN 4006:2009 is part of a broader aerospace series and aligns with related aerospace metallic material standards to ensure quality, performance, and reliability in aerospace manufacturing.

The standard is intended to harmonize the specifications for aluminium alloy AL-P6082 among CEN member countries, facilitating consistent production, procurement, and quality control processes within the aerospace sector. It ensures that materials meet strict requirements for chemical composition, mechanical properties, heat treatments, and testing protocols.

Key Topics

• Material Designation: Aluminium alloy AL-P6082 in T4 or T42 tempers, formulated for aerospace use.
• Thickness Range: Covers sheets and strips from 0.4 mm up to 6 mm thick.
• Chemical Composition Requirements: Detailed limits on elements such as silicon (Si), iron (Fe), copper (Cu), manganese (Mn), magnesium (Mg), chromium (Cr), zinc (Zn), and titanium (Ti) to guarantee alloy consistency and performance.
• Mechanical Properties: Specification of proof stress, tensile strength, elongation, and hardness values tailored for aerospace strength and durability demands.
• Heat Treatment Protocols: Defines treatment temperatures and times, including solution heat treatment and natural aging processes to achieve desired material properties.
• Delivery Conditions: Materials are delivered in O (annealed), H111 (partially hardened), or the final temper conditions T4 or T42.
• Testing and Inspection: Requirements for sample selection, test methods, and inspection criteria based largely on EN 4400-2 to ensure compliance and quality.
• Dimensional Control: Clear guidelines on thickness tolerances and directional testing relative to the material’s rolling direction.
• External Defect Controls: Standards for surface and internal quality to prevent defects that could compromise aerospace component integrity.
• Marking and Traceability: Specifications for labeling products to maintain traceability and support audit processes.
• Product Qualification: Manufacturers and purchasers are to agree on qualification procedures to validate material compliance with aerospace performance requirements.

Applications

SIST EN 4006:2009 aluminium alloy AL-P6082 sheets and strips are widely used in aerospace manufacturing where a combination of high strength, corrosion resistance, and good formability is essential. Typical applications include:

• Aircraft structural components and airframes
• Aerospace panels and skins
• Precision machined aerospace parts requiring stable mechanical performance
• Lightweight aerospace assemblies where weight savings are critical without sacrificing mechanical integrity

These materials provide superior performance in demanding environments encountered by aeronautical and defense industries, facilitating safer and more efficient aircraft designs.

Related Standards

• EN 4258: General organization of aerospace metallic material standards, outlining the series structure to which EN 4006 belongs.
• EN 4400-2: Technical specification for aluminium and aluminium alloy wrought products including sheets and strips, referenced for mechanical testing and product conformity.
• EN 4500-2: Rules for drafting and presentation of metallic material standards, including specific rules for aluminium alloys in aerospace applications.

By adhering to SIST EN 4006:2009 alongside these complementary standards, aerospace manufacturers ensure consistency, reliability, and regulatory compliance throughout their supply chain and production processes.

Keywords: SIST EN 4006:2009, aluminium alloy AL-P6082, aerospace aluminium sheet, aerospace aluminium strip, T4 temper, T42 temper, aerospace materials standard, aluminium sheet aerospace, CEN aerospace standards, aluminium mechanical properties, aerospace manufacturing materials, aluminium alloy specifications.