5056-O Aluminum alloy,Aluminum 5056-O alloy,E FORU

### **Technical Datasheet: 5056-O Aluminum Alloy** --- #### **1. Material Overview** **5056-O Aluminum Alloy** is the fully annealed condition of the 5056 aluminum-magnesium alloy, offering maximum formability and ductility. The "O" temper indicates the material has been heat treated to achieve the softest possible state, providing optimal workability for severe forming operations while maintaining the excellent corrosion resistance characteristic of high-magnesium aluminum alloys. --- #### **2. Chemical Composition (Weight %)** | Element | Content (%) | Role in the Alloy | |---------|-------------|-------------------| | Al | Balance | Base metal | | Mg | 4.5-5.6 | Solid solution strengthening | | Mn | 0.05-0.20 | Grain refinement | | Cr | 0.05-0.20 | Corrosion resistance | | Cu | ≤0.10 | Impurity control | | Fe | ≤0.40 | Impurity control | | Si | ≤0.30 | Impurity control | | Zn | ≤0.10 | Impurity control | | Others (each) | ≤0.05 | - | | Others (total) | ≤0.15 | - | --- #### **3. Physical Properties** | Property | Value | Test Standard | |----------|-------|---------------| | Density | 2.64 g/cm³ | ASTM B193 | | Melting Range | 568-638 °C | - | | Electrical Conductivity | 29-34% IACS | ASTM B193 | | Thermal Conductivity | 117-127 W/m·K | ASTM E1461 | | Coefficient of Thermal Expansion | 24.1 × 10⁻⁶/K (20-100°C) | ASTM E228 | | Modulus of Elasticity | 71.0 GPa | ASTM E111 | | Specific Heat Capacity | 900 J/kg·K | - | --- #### **4. Mechanical Properties (Typical)** | Property | Value Range | Test Standard | |----------|-------------|---------------| | Tensile Strength | 195-245 MPa | ASTM B557 | | Yield Strength (0.2% Offset) | 85-125 MPa | ASTM B557 | | Elongation (50mm) | 25-35% | ASTM B557 | | Hardness (Brinell) | 55-65 HB | ASTM E10 | | Shear Strength | 145-165 MPa | ASTM B831 | | Fatigue Strength (10⁷ cycles) | 100-120 MPa | ASTM E466 | | **Bend Radius (90°)** | **0-1×t** | **ASTM B311** | --- #### **5. Key Characteristics** - **Maximum Formability**: Ideal for deep drawing and severe forming operations - **Excellent Ductility**: Highest elongation in the 5056 alloy series - **Superior Workability**: Easy to cut, form, and machine - **Outstanding Corrosion Resistance**: Excellent performance in marine environments - **Good Electrical Conductivity**: Suitable for electrical applications - **Low Residual Stress**: Minimal springback after forming --- #### **6. Processing Characteristics** **Forming Operations:** - Excellent for deep drawing and severe forming - Minimum bend radius: 0× thickness (flat) - Suitable for complex stamping operations - Ideal for spinning and stretch forming - Excellent for embossing and coining **Joining Methods:** - GTAW (TIG) - Excellent - GMAW (MIG) - Excellent - Resistance welding - Very good - Adhesive bonding - Excellent - Brazing - Excellent - Soldering - Good **Surface Treatments:** - Anodizing - Excellent results - Chemical conversion - Excellent corrosion protection - Painting - Superior adhesion - Powder coating - Excellent finish quality - Electroplating - Good with proper preparation - Polishing - Very good results --- #### **7. Product Applications** **Deep Drawing Applications:** - Complex marine components - Aircraft fuel tanks - Chemical processing vessels - Electronic enclosures **Marine & Offshore:** - Boat fuel tanks - Marine instrument housings - Submarine components - Offshore equipment parts **Aerospace:** - Aircraft structural components - Rocket fuel tanks - Spacecraft parts - Aviation fluid systems **Industrial Applications:** - Pressure vessels - Heat exchangers - Chemical storage tanks - Food processing equipment --- #### **8. Available Forms & Sizes** - Sheet: 0.5mm to 6.0mm thickness - Plate: 6mm to 50mm thickness - Wire: 0.5mm to 10mm diameter - Rod: 6mm to 100mm diameter - Tube: Various diameters and wall thicknesses - Custom forged shapes --- #### **9. International Standards** | Standard Organization | Designation | Specification | |----------------------|-------------|---------------| | Aluminum Association | AA 5056-O | AA-50 | | ASTM International | ASTM B209-5056O | ASTM B209 | | EN Standard | EN AW-5056-O | EN 573-3 | | ISO Standard | AlMg5-O | ISO 209 | | JIS Standard | A5056-O | JIS H4000 | | GB Standard | 5056-O | GB/T 3880 | --- #### **10. Heat Treatment Information** - **Annealing Temperature**: 345°C ± 15°C - **Soaking Time**: 2-3 hours - **Cooling Rate**: 30°C per hour maximum to 260°C - **Grain Size Control**: Optimized for formability - **Stress Relief**: Complete stress elimination --- #### **11. Quality Assurance** - Certified to full O temper requirements - Microstructure examination for grain size - Formability testing (Erichen, Olsen tests) - Surface quality verification - Dimensional compliance certification - Full traceability documentation --- #### **12. Special Advantages** | Feature | 5056-O Advantage | |---------|------------------| | Formability | Best in series for severe forming | | Corrosion Resistance | Excellent in marine environments | | Workability | Easy to process and fabricate | | Weldability | Excellent joining characteristics | | Consistency | Uniform properties throughout | --- #### **13. Storage & Handling Recommendations** - Protect from surface damage and scratches - Store in clean, dry environment - Use separators between sheets - Handle with clean gloves - Avoid exposure to corrosive environments - Maintain organized storage system --- *Note: 5056-O aluminum alloy is specifically designed for applications requiring maximum formability and is the preferred choice for deep drawing and severe forming operations. The alloy's excellent corrosion resistance in marine environments makes it particularly valuable for naval and offshore applications. For structural applications requiring higher strength, consider strain-hardened tempers (H38, H18, etc.).*

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 1817 gallon liquid totes Special package is available on request.