5557 Aluminum alloy,Aluminum 5557 alloy,E FORU

# 5557 Aluminum Alloy Technical Datasheet ## Material Overview 5557 Aluminum Alloy is a high-purity, non-heat-treatable aluminum-magnesium alloy from the 5xxx series, specifically engineered for applications requiring exceptional surface quality, superior anodizing characteristics, and excellent formability. This alloy is particularly noted for its ability to achieve brilliant, reflective finishes after anodizing, making it ideal for premium decorative and architectural applications where aesthetic excellence is paramount. --- ## 1. Chemical Composition (Weight %) | Element | Composition Range | |---------|-------------------| | Aluminum (Al) | Balance | | Magnesium (Mg) | 0.5 - 1.1 | | Manganese (Mn) | 0.02 - 0.10 | | Iron (Fe) | ≤ 0.08 | | Silicon (Si) | ≤ 0.06 | | Copper (Cu) | ≤ 0.03 | | Zinc (Zn) | ≤ 0.03 | | Titanium (Ti) | ≤ 0.02 | | Other Elements (Each) | ≤ 0.02 | | Other Elements (Total) | ≤ 0.08 | --- ## 2. Physical Properties | Property | Value | |----------|-------| | Density | 2.70 g/cm³ | | Melting Range | 645 - 655 °C | | Electrical Conductivity | 42-46% IACS | | Thermal Conductivity | 152 - 162 W/m·K | | Coefficient of Thermal Expansion (20-100°C) | 23.5 × 10⁻⁶/°C | | Modulus of Elasticity | 69 GPa | | Specific Heat Capacity | 900 J/kg·K | --- ## 3. Mechanical Properties | Temper | Tensile Strength (MPa) | Yield Strength (MPa) | Elongation (%) | |--------|------------------------|----------------------|----------------| | O | 100 - 140 | 35 - 65 | 28 - 33 | | H12 | 120 - 160 | 90 - 120 | 18 - 22 | | H14 | 140 - 180 | 110 - 140 | 16 - 20 | | H16 | 160 - 200 | 130 - 160 | 14 - 18 | | H18 | 180 - 220 | 150 - 180 | 12 - 16 | --- ## 4. Technical Applications ### Premium Application Sectors: - **Luxury Automotive Trim** - Premium exterior brightwork - High-end wheel arch trim - Luxury vehicle emblems - Premium interior trim components - **Architectural Excellence** - High-reflectivity building panels - Premium architectural facades - Luxury interior design elements - High-end decorative hardware - **Consumer Electronics** - Premium smartphone and tablet casings - Luxury appliance surfaces - High-quality audio equipment - Premium electronic enclosures - **Specialty Applications** - Award and trophy components - Premium signage and nameplates - Luxury packaging - High-end exhibition displays --- ## 5. International Standards Compliance | Standard Organization | Designation | |----------------------|-------------| | Aluminum Association | AA 5557 | | ASTM International | ASTM B209-5557 | | European Standards | EN AW-5557 | | Japanese Standards | JIS A5557 | | International Standards | ISO 6361-2 | --- ## 6. Material Characteristics ### Key Advantages: - Exceptional surface finish quality - Superior bright anodizing characteristics - Excellent formability and bendability - High reflectivity after polishing - Good corrosion resistance - Consistent color matching ### Special Features: - **Surface Excellence** - Supreme brightness after mechanical polishing - Excellent response to electrochemical polishing - Uniform anodic oxide layer formation - Consistent reflective properties - **Anodizing Performance** - Superior bright anodizing capability - Excellent clarity in clear anodizing - Perfect color consistency in dyeing - Uniform coating thickness distribution --- ## 7. Processing Characteristics ### Manufacturing Considerations: - **Surface Treatment** - Exceptional response to mechanical polishing - Ideal for electrochemical polishing - Excellent for bright dipping processes - Consistent results in anodizing - **Forming Operations** - Superior deep drawing capability - Excellent bending characteristics - Minimal springback - Suitable for complex stamping - **Joining Technology** - Good weldability using TIG and MIG - Recommended filler: 4043 - Suitable for adhesive bonding - Excellent for mechanical fastening - **Machining** - Superior machinability - Excellent surface finish after machining - 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 - Reflectivity measurement - Corrosion resistance evaluation ### Premium Quality Requirements: - Surface cleanliness standards - Reflectivity specifications - Color consistency controls - Surface defect limitations --- ## Technical Note 5557 Aluminum Alloy represents the pinnacle of aluminum-magnesium alloys for applications requiring supreme surface quality and aesthetic excellence. Its ultra-pure chemical composition, particularly the extremely low levels of iron and silicon, enables exceptional brightness after mechanical polishing and anodizing processes. The alloy's excellent formability allows for the production of complex shapes while maintaining superior surface appearance. This combination of properties makes 5557 the material of choice for luxury automotive trim, premium architectural elements, and high-end consumer products where visual perfection and consistent appearance are critical requirements. The material's ability to achieve and maintain brilliant, mirror-like surfaces through various finishing processes establishes it as the ultimate choice for aesthetically demanding applications where nothing less than perfection is acceptable.

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 1924 gallon liquid totes Special package is available on request.