5457-H25 Aluminum alloy,Aluminum 5457-H25 alloy,E FORU

# 5457-H25 Aluminum Alloy Technical Datasheet ## Material Overview 5457-H25 is a strain-hardened and stabilized temper variant of the 5457 aluminum-magnesium alloy, offering an optimal balance of moderate strength, excellent surface quality, and superior anodizing characteristics. The H25 temper indicates that the material has been strain-hardened to a quarter-hard level and then stabilized to achieve consistent mechanical properties. This combination makes it particularly suitable for automotive trim, architectural applications, and high-quality consumer products where both aesthetic appearance and structural integrity are important. --- ## 1. Chemical Composition (Weight %) | Element | Composition Range | |---------|-------------------| | Aluminum (Al) | Balance | | Magnesium (Mg) | 0.8 - 1.2 | | Manganese (Mn) | 0.05 - 0.20 | | Chromium (Cr) | 0.10 - 0.25 | | Iron (Fe) | ≤ 0.10 | | Silicon (Si) | ≤ 0.08 | | Copper (Cu) | ≤ 0.05 | | Zinc (Zn) | ≤ 0.05 | | Titanium (Ti) | ≤ 0.03 | | Other Elements (Each) | ≤ 0.03 | | Other Elements (Total) | ≤ 0.10 | --- ## 2. Physical Properties | Property | Value | |----------|-------| | Density | 2.70 g/cm³ | | Melting Range | 640 - 655 °C | | Electrical Conductivity | 38-42% IACS | | Thermal Conductivity | 144 - 154 W/m·K | | Coefficient of Thermal Expansion (20-100°C) | 23.6 × 10⁻⁶/°C | | Modulus of Elasticity | 69 GPa | | Specific Heat Capacity | 900 J/kg·K | --- ## 3. Mechanical Properties | Property | Typical Value | Standard Minimum | |----------|---------------|------------------| | Tensile Strength | 180 - 220 MPa | 165 MPa | | Yield Strength (0.2% Offset) | 140 - 180 MPa | 135 MPa | | Elongation (50mm) | 10 - 14% | 8% | | Hardness (Brinell) | 50 - 60 HB | - | | Shear Strength | 110 - 140 MPa | - | | Fatigue Strength | 85 - 105 MPa | - | --- ## 4. Technical Applications ### Primary Application Sectors: - **Automotive Trim** - Exterior decorative moldings - Body side trim components - Wheel arch trim - Window trim and surrounds - **Architectural Applications** - Decorative building panels - Interior design elements - Architectural trim components - Decorative hardware - **Consumer Products** - Appliance trim and handles - Electronic enclosures and bezels - Quality kitchenware - Premium consumer goods - **Specialty Applications** - Nameplates and emblems - Trophy and award components - Exhibition display systems - Decorative lighting fixtures --- ## 5. International Standards Compliance | Standard Organization | Designation | |----------------------|-------------| | Aluminum Association | AA 5457-H25 | | ASTM International | ASTM B209-5457 H25 | | European Standards | EN AW-5457 H25 | | Japanese Standards | JIS A5457 H25 | | International Standards | ISO 6361-2 | --- ## 6. Material Characteristics ### Key Advantages: - Excellent surface finish quality - Superior anodizing characteristics - Good formability and bendability - Moderate strength with good durability - Consistent color matching in finishes - Good corrosion resistance ### Special Features: - **Surface Quality** - Excellent brightness after polishing - Superior response to bright anodizing - Uniform color absorption - Consistent surface appearance - **Mechanical Performance** - Balanced strength and formability - Good spring characteristics - Adequate durability for decorative applications - Stable mechanical properties --- ## 7. Processing Characteristics ### Manufacturing Considerations: - **Forming Operations** - Good bendability and formability - Suitable for moderate forming operations - Predictable springback characteristics - Adequate for most stamping applications - **Anodizing Performance** - Excellent for decorative anodizing - Uniform oxide layer formation - Good color consistency - Suitable for both clear and color anodizing - **Welding Technology** - Good weldability using standard methods - Recommended filler: 4043, 5356 - Good weld appearance - Minimal property degradation in HAZ - **Machining** - Excellent machinability - Produces superior surface finish - Suitable for high-speed operations - Minimal tool wear --- ## 8. Quality Assurance ### Testing & Certification: - Mechanical property testing - Chemical composition analysis - Surface quality inspection - Anodizing quality tests - Corrosion resistance evaluation - Mill test certificates per EN 10204 3.1 ### Special Quality Requirements: - Surface cleanliness standards - Reflectivity specifications - Color consistency controls - Surface defect limitations --- ## Technical Note 5457-H25 Aluminum Alloy provides an optimal balance of mechanical properties and surface quality, making it particularly valuable for applications requiring both structural performance and premium aesthetic appearance. The H25 temper offers adequate strength for functional applications while maintaining the excellent surface characteristics that make 5457 alloy ideal for decorative components. Its ability to achieve bright, reflective surfaces through mechanical polishing and anodizing processes, combined with good formability and consistent mechanical properties, establishes it as a preferred choice for automotive trim, architectural elements, and high-end consumer products where visual appeal and reliable performance are equally important.

Packing of Standard Packing: Typical bulk packaging includes palletized plastic 5 gallon/25 kg. pails, fiber and steel drums to 1 ton super sacks in full container (FCL) or truck load (T/L) quantities. Research and sample quantities and hygroscopic, oxidizing or other air sensitive materials may be packaged under argon or vacuum. Solutions are packaged in polypropylene, plastic or glass jars up to palletized 1914 gallon liquid totes Special package is available on request.