5056-H191 Aluminum alloy,Aluminum 5056-H191 alloy,E FORU

### **Technical Datasheet: 5056-H191 Aluminum Alloy** --- #### **1. Material Overview** **5056-H191 Aluminum Alloy** is a specialized strain-hardened aluminum-magnesium alloy supplied in a specific extra-hard temper condition. The H191 designation represents a specialized strain-hardened temper developed for specific applications requiring enhanced strength characteristics beyond standard H19 temper. This alloy combines very high strength with good electrical conductivity and maintains excellent corrosion resistance, particularly in marine environments. --- #### **2. Chemical Composition (Weight %)** | Element | Content (%) | Role in the Alloy | |---------|-------------|-------------------| | Al | Balance | Base metal | | Mg | 4.5-5.6 | Primary strengthening element | | 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 | 20-25% IACS | ASTM B193 | | Thermal Conductivity | 92-102 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 | 450-500 MPa | ASTM B557 | | Yield Strength (0.2% Offset) | 420-470 MPa | ASTM B557 | | Elongation (50mm) | 4-8% | ASTM B557 | | Hardness (Brinell) | 115-130 HB | ASTM E10 | | Shear Strength | 240-260 MPa | ASTM B831 | | Fatigue Strength (10⁷ cycles) | 155-175 MPa | ASTM E466 | | **Bend Radius (90°)** | **5-6×t** | **ASTM B311** | --- #### **5. Key Characteristics** - **Ultra-High Strength**: Enhanced strength beyond standard H19 temper - **Excellent Marine Corrosion Resistance**: Outstanding performance in saltwater environments - **Good Electrical Conductivity**: Suitable for electrical applications - **Very Limited Formability**: Restricted to minimal bending operations - **Superior Stress Corrosion Resistance**: Excellent performance under tension - **Good Thermal Conductivity**: Effective heat dissipation properties --- #### **6. Processing Characteristics** **Forming Operations:** - Very limited forming capability - Minimum bend radius: 5-6× thickness - Not suitable for deep drawing or complex forming - Extreme springback requiring significant compensation - Straight cutting and machining preferred **Joining Methods:** - GTAW (TIG) - Not recommended due to strength loss - GMAW (MIG) - Special procedures required - Resistance welding - Acceptable with proper parameters - Adhesive bonding - Excellent - Mechanical fastening - Preferred method - Riveting - Excellent results **Surface Treatments:** - Anodizing - Good with specialized pretreatment - Chemical conversion - Good for corrosion protection - Painting - Requires thorough surface preparation - Powder coating - Excellent with proper pretreatment - Plating - Suitable for specific applications --- #### **7. Product Applications** **Electrical & Electronic:** - High-strength electrical conductors - Bus bar components - Power transmission parts - Electrical connector components **Marine & Naval:** - High-strength marine cables - Shipbuilding structural components - Submarine electrical systems - Offshore platform electrical components **Aerospace:** - Aircraft electrical systems - Missile and rocket components - Spacecraft structural-electrical parts - Aviation ground support equipment **Specialized Industrial:** - Welding electrode cores - Specialty fasteners - High-strength wire products - Chemical processing equipment --- #### **8. Available Forms & Sizes** - Wire: 0.5mm to 6.0mm diameter - Rod: 6mm to 25mm diameter - Strip: 0.8mm to 3.0mm thickness - Custom drawn profiles - Special wire shapes --- #### **9. International Standards** | Standard Organization | Designation | Specification | |----------------------|-------------|---------------| | Aluminum Association | AA 5056-H191 | AA-50 | | ASTM International | ASTM B211-5056H191 | ASTM B211 | | EN Standard | EN AW-5056-H191 | EN 573-3 | | ISO Standard | AlMg5-H191 | ISO 209 | | JIS Standard | A5056-H191 | JIS H4000 | --- #### **10. Special Properties** - **High Strength-to-Weight Ratio**: Exceptional for weight-critical applications - **Stress Relaxation Resistance**: Excellent resistance to creep under load - **Fatigue Performance**: Good for high-cycle applications - **Thermal Stability**: Maintains properties at elevated temperatures - **Manufacturing Consistency**: Tight control of mechanical properties --- #### **11. Quality Assurance** - Certified to H191 temper specifications - Tight mechanical property tolerances - Chemical composition verification - Surface quality inspection - Dimensional accuracy certification - Specialized testing for intended applications --- #### **12. Design Considerations** - **Maximum Strength Utilization**: Designed for high-stress applications - **Severe Forming Limitations**: Very restricted forming capability - **Joining Restrictions**: Limited welding capability - **Temperature Limitations**: Maximum service temperature 65°C - **Special Handling**: Requires careful processing and handling --- #### **13. Comparative Analysis** | Property | H18 Temper | H19 Temper | H191 Temper | |----------|------------|------------|-------------| | Tensile Strength (MPa) | 435-485 | 440-490 | 450-500 | | Yield Strength (MPa) | 405-455 | 415-465 | 420-470 | | Elongation (%) | 6-10 | 5-8 | 4-8 | | Typical Applications | General high-strength | Special applications | Ultra-high strength needs | --- *Note: 5056-H191 aluminum alloy represents a specialized high-strength temper designed for specific applications requiring maximum strength characteristics. While offering superior mechanical properties, this temper requires special consideration in design and manufacturing due to its limited formability and joining restrictions. The alloy is particularly valuable in applications where high strength must be combined with good electrical conductivity and excellent corrosion resistance.*

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 1815 gallon liquid totes Special package is available on request.