EN 4247:2005

Overview

EN 4247:2005 defines the requirements for aluminum alloy AL-P2024-T42 plates with thicknesses between 6 mm and 140 mm, specifically for aerospace applications. Issued by the European Committee for Standardization (CEN), this standard ensures high quality and consistency in the production and use of these aluminum plates. It applies to rolled aluminum plates manufactured and delivered in the T42 temper, widely used in the aerospace industry for their strength and durability.

Key Topics

• Material Specification: This standard covers aluminum alloy AL-P2024-T42, outlining its chemical composition, mechanical properties, and delivery conditions.
• Plate Dimensions: Applicable to plates with thickness greater than 6 mm and up to 140 mm.
• Production Methods: Specifies that the product form is a rolled plate and prescribes relevant production and heat treatment methods.
• Quality Requirements: Addresses sample and test piece selection, inspection protocols, marking, and product qualification.
• Delivery Conditions: Plates are supplied in the T42 condition, following a specific heat treatment process combining solution heat treatment, quenching, and natural aging.
• Testing & Inspection: Provides references to testing methods and inspection requirements via cross-references to EN 4400-1, ensuring compliance with aerospace standards.

Applications

EN 4247:2005 is essential for manufacturers, aerospace engineers, quality managers, and procurement specialists involved in the aerospace sector. The main applications include:

• Aerospace Structures: Used in the fabrication of load-bearing aircraft components such as fuselage panels, wing sections, and frames due to their favorable strength-to-weight ratio.
• High-Integrity Components: Suitable for critical parts requiring reliable mechanical properties and proven material pedigree.
• Replacement & Maintenance: Facilitates consistent sourcing of spare parts and maintenance materials by providing a clear standard for material selection.
• Supplier Compliance: Enables suppliers to demonstrate compliance with European aerospace material requirements, supporting certification and approval processes.
• Design and Manufacturing: Helps engineers design components to meet both performance and regulatory requirements.

Related Standards

For comprehensive application and compliance, users should review these related European standards:

• EN 4258: Provides general organization and guidelines for standardization of metallic materials for aerospace purposes.
• EN 4400-1: Specifies technical requirements for aluminum and aluminum alloy wrought products, including plates, used in the aerospace industry.
• EN 4500-2: Outlines specific rules for drafting and presentation of standards for aluminum, aluminum alloys, and magnesium alloys.
• Other EN Aerospace Standards: Refer to additional EN aerospace series standards for rivets, fasteners, and other related materials to ensure complete system compatibility.

Practical Value

Adhering to EN 4247:2005 ensures:

• Product Consistency: Uniform mechanical and chemical properties for manufacturing and repair.
• Quality Assurance: Enhanced traceability and inspection processes, minimizing risk in critical aerospace applications.
• Regulatory Compliance: Alignment with European and international aerospace material requirements.
• Supply Chain Confidence: Clear communication between manufacturers, suppliers, and customers on material properties and compliance.

In summary, EN 4247:2005 is a foundational standard for aluminum alloy plates in aerospace, supporting safety, reliability, and efficiency in the industry. For maximum benefit and seamless integration, always consult the full standard alongside referenced documents.