5456A Aluminum alloy,Aluminum 5456A alloy,E FORU

# 5456A Aluminum Alloy Technical Datasheet ## Material Overview 5456A Aluminum Alloy is a high-strength, non-heat-treatable aluminum-magnesium alloy from the 5xxx series, representing an enhanced version of the standard 5456 alloy with improved consistency and quality controls. This alloy is specifically designed for applications requiring superior strength, excellent corrosion resistance, and outstanding performance in marine and cryogenic environments. The "A" designation indicates tighter compositional controls and enhanced manufacturing standards. --- ## 1. Chemical Composition (Weight %) | Element | Composition Range | Notes | |---------|-------------------|-------| | Aluminum (Al) | Balance | High purity base | | Magnesium (Mg) | 4.7 - 5.5 | Primary strengthening element | | Manganese (Mn) | 0.50 - 1.0 | Grain structure control | | Chromium (Cr) | 0.05 - 0.20 | Corrosion resistance enhancement | | Iron (Fe) | ≤ 0.40 | Impurity control | | Silicon (Si) | ≤ 0.25 | Impurity control | | Copper (Cu) | ≤ 0.10 | Limited for corrosion resistance | | Zinc (Zn) | ≤ 0.25 | Alloying element control | | Titanium (Ti) | ≤ 0.20 | Grain refinement | | Other Elements (Each) | ≤ 0.05 | Tight quality control | | Other Elements (Total) | ≤ 0.15 | Enhanced purity | --- ## 2. Physical Properties | Property | Value | |----------|-------| | Density | 2.66 g/cm³ | | Melting Range | 570 - 640 °C | | Electrical Conductivity | 28-32% IACS | | Thermal Conductivity | 117 - 127 W/m·K | | Coefficient of Thermal Expansion (20-100°C) | 24.0 × 10⁻⁶/°C | | Modulus of Elasticity | 70 GPa | | Specific Heat Capacity | 900 J/kg·K | --- ## 3. Mechanical Properties | Temper | Tensile Strength (MPa) | Yield Strength (MPa) | Elongation (%) | |--------|------------------------|----------------------|----------------| | O | 285 - 335 | 140 - 180 | 18 - 22 | | H32 | 325 - 375 | 250 - 290 | 12 - 16 | | H34 | 345 - 395 | 270 - 310 | 10 - 14 | | H116 | 285 - 335 | 140 - 180 | 16 - 20 | --- ## 4. Technical Applications ### Primary Application Sectors: - **Marine & Offshore Structures** - Ship hulls and superstructures - Offshore platform components - Submarine pressure hulls - Marine pressure vessels - **Aerospace & Defense** - Military vehicle armor - Aircraft structural components - Missile components - Defense equipment structures - **Pressure Vessels** - Cryogenic storage tanks - High-pressure containers - Chemical reactors - Industrial gas storage - **Transportation** - Heavy vehicle frames - Railway carriage bodies - Truck trailers - Special transport equipment --- ## 5. International Standards Compliance | Standard Organization | Designation | |----------------------|-------------| | Aluminum Association | AA 5456A | | ASTM International | ASTM B209/B210 | | European Standards | EN AW-5456A | | International Standards | ISO 6361-2 | | Military Standards | MIL-DTL-46027 | --- ## 6. Material Characteristics ### Key Advantages: - High strength-to-weight ratio - Excellent corrosion resistance in marine environments - Superior stress corrosion cracking resistance - Good weldability with minimal strength loss - Excellent cryogenic properties - Enhanced fatigue performance ### Special Features: - **Enhanced Strength** - High magnesium content for improved strength - Good strain hardening capability - Maintains strength at elevated temperatures - Consistent mechanical properties - **Corrosion Performance** - Outstanding seawater corrosion resistance - Excellent performance in marine atmospheres - Good resistance to chemical environments - Suitable for splash zone applications --- ## 7. Processing Characteristics ### Manufacturing Considerations: - **Welding Technology** - Excellent weldability using MIG and TIG methods - Recommended filler: 5356, 5183 - Minimal strength loss in heat-affected zone - Good weld metal mechanical properties - **Forming Operations** - Good cold working capability - Suitable for moderate forming operations - Predictable springback characteristics - Best formability in annealed condition - **Machining** - Good machinability with proper tools - Requires adequate cooling - Produces acceptable surface finish - Suitable for precision machining --- ## 8. Quality Assurance ### Testing & Certification: - Mechanical property testing - Chemical composition analysis - Corrosion resistance testing per ASTM standards - Fracture toughness evaluation - Fatigue testing capability - Mill test certificates per EN 10204 3.2 --- ## Technical Note 5456A Aluminum Alloy represents a premium high-strength aluminum-magnesium alloy designed for demanding applications in marine, aerospace, and defense industries. Its optimized chemical composition and enhanced quality controls provide superior mechanical properties while maintaining excellent corrosion resistance. The alloy is particularly suitable for welded structures and components operating in aggressive environments where reliability and performance are critical requirements. The "A" designation ensures consistent batch-to-batch properties and improved manufacturing consistency, making it the preferred choice for safety-critical applications where material performance cannot be compromised. Its combination of high strength, excellent corrosion resistance, and good manufacturing characteristics establishes it as a benchmark material for advanced engineering applications in severe service conditions.

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 1906 gallon liquid totes Special package is available on request.