High elongation H24 aluminum coil: no cracking in cold formed forming, worry-free processing of complex molding

High elongation H24 aluminum coil: no cracking in cold formed forming, worry-free processing of complex molding

In the competitive landscape of modern manufacturing, materials that combine strength, ductility, and processability are in high demand. The H24 aluminum coil, with its exceptional high elongation and resistance to cracking during cold forming, has emerged as a game-changer for industries requiring precision in complex molding. This article explores its unique properties, global applications, and competitive advantages, backed by real-world case studies and technical insights.

Understanding H24 Aluminum Coil：

H24 Temper:
H24 denotes an aluminum alloy that has been strain-hardened and partially annealed, striking a balance between strength and formability. This temper enhances elongation while maintaining structural integrity, making it ideal for cold forming processes.

Key Properties:

• High Elongation (≥15%): Allows significant deformation without cracking.

• Tensile Strength (150–200 MPa): Robust yet workable.

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• Surface Finish: Smooth, uniform, and ready for post-processing (e.g., coating, painting).

• Corrosion Resistance: Natural oxide layer protects against environmental degradation.

• Common Alloys:

• AA3003-H24: Combines manganese for enhanced strength.

• AA5052-H24: Magnesium-enriched for marine applications.

Why H24 Aluminum Coil Excels in Cold Forming：

Cold Forming Challenges:
Traditional aluminum alloys often face issues like cracking, springback, or surface defects during cold forming, especially in complex geometries (e.g., deep draws, sharp bends).

H24’s Edge:

Enhanced Ductility: High elongation minimizes stress concentration, preventing cracks.

Uniform Grain Structure: Ensures consistent deformation across the material.

Low Residual Stress: Reduces springback, maintaining dimensional accuracy.

Technical Validation:

• Erichsen Cupping Test: H24 coils achieve ≥6mm cup depth without failure.

• Bendability: 180° bends with zero cracking at radii as tight as 0.5t (t=thickness).

Global Applications in Complex Molding：

Automotive Industry

• Application: Battery Trays for EVs

• Case Study: A German EV manufacturer adopted AA3003-H24 coils for battery tray forming.

• Result: Achieved seamless deep draws (8mm depth) with no cracks, reducing scrap rates by 30%.

• Application: Lightweight Body Panels

• Case Study: A U.S. automotive supplier used H24 coils for fender production.

• Result: Eliminated post-forming repairs, cutting production costs by 20%.

  
  

  Aerospace Components

• Application: Cabin Interior Moldings

• Case Study: A French aerospace company utilized AA5052-H24 for curved overhead bins.

• Result: Complex curves formed in a single pass, meeting AS9100 quality standards.

  Consumer Electronics

• Application: Laptop Chassis

  Case Study: A Japanese tech giant switched to H24 coils for ultra-thin laptop casings.

• Result: Achieved 0.8mm thickness with flawless edges, enhancing product aesthetics.

Architectural Cladding

• Application: 3D Facade Panels

• Case Study: A Dubai-based architect used H24 coils for undulating building facades.

• Result: Enabled intricate designs without compromising weather resistance.

Competitive Advantages Over Alternatives：

Compliance with International Standards

• ASTM B209: Specifies mechanical properties for aluminum sheet and coil.

• EN 485 (Europe): Covers tolerances for thickness, width, and flatness.

• JIS H4000 (Japan): Ensures consistency in alloy composition and performance.

Why Choose H24 Aluminum Coil?

• Cost Savings: Reduced scrap rates and tooling maintenance.

• Design Freedom: Enables bold, intricate geometries unachievable with brittle materials.

• Sustainability: Fully recyclable, supporting circular manufacturing practices.

• The H24 aluminum coil redefines the boundaries of cold forming, offering unmatched high elongation and crack resistance for complex molding challenges. From electric vehicles in Germany to futuristic architecture in Dubai, its versatility and reliability make it a cornerstone of modern manufacturing.

• Ready to Transform Your Production Line?
  Contact us today for free material samples, technical consultations, and custom coil solutions tailored to your needs!