8093 Aluminum alloy,Aluminum 8093 alloy，E FORU

### **Aluminum 8093 Alloy Technical Datasheet** --- #### **1. Product Overview** **Aluminum 8093** is an advanced aluminum-lithium alloy from the 8000 series, specifically developed for aerospace applications requiring an optimal balance of high strength, excellent corrosion resistance, and superior damage tolerance. As part of the third-generation aluminum-lithium alloys, 8093 offers significant weight savings compared to conventional aluminum alloys while maintaining exceptional mechanical properties for critical aerospace structures. --- #### **2. Chemical Composition (Weight %)** | Element | Composition Range | Typical Value | |---------|-------------------|---------------| | Aluminum (Al) | Balance | ≥96.0% | | Lithium (Li) | 1.5 - 2.0% | 1.75% | | Copper (Cu) | 1.2 - 1.8% | 1.5% | | Magnesium (Mg) | 0.8 - 1.4% | 1.1% | | Zirconium (Zr) | 0.08 - 0.15% | 0.12% | | Silver (Ag) | 0.3 - 0.6% | 0.45% | | Iron (Fe) | ≤ 0.12% | 0.08% | | Silicon (Si) | ≤ 0.10% | 0.06% | | Zinc (Zn) | ≤ 0.10% | 0.06% | | Manganese (Mn) | ≤ 0.05% | 0.03% | | Other Elements (each) | ≤ 0.05% | - | | Total Other Elements | ≤ 0.15% | - | **Key Composition Features:** - Moderate lithium content for balanced properties - Silver addition for enhanced precipitation strengthening - Optimized copper and magnesium ratios - Zirconium for grain structure control - Ultra-low impurity levels for improved toughness --- #### **3. Physical Properties** | Property | Metric Value | Imperial Value | |----------|--------------|----------------| | Density | 2.63 g/cm³ | 0.095 lb/in³ | | Melting Range | 610-660°C | 1130-1220°F | | Thermal Conductivity | 105-115 W/m·K | - | | Electrical Conductivity | 25-30% IACS | - | | Modulus of Elasticity | 76 GPa | 11.0 × 10⁶ psi | | Coefficient of Thermal Expansion | 23.0 × 10⁻⁶/°C | 12.8 × 10⁻⁶/°F | | Specific Heat Capacity | 900 J/kg·K | - | | Electrical Resistivity | 57-69 nΩ·m | - | --- #### **4. Mechanical Properties** **Typical Properties in T8 Temper:** - **Tensile Ultimate Strength**: 510-570 MPa (74-83 ksi) - **Tensile Yield Strength (0.2% Offset)**: 450-510 MPa (65-74 ksi) - **Elongation in 50 mm**: 8-12% - **Shear Strength**: 300-340 MPa (44-49 ksi) - **Hardness (Vickers)**: 160-180 HV - **Fatigue Strength** (R=0.1): 200-230 MPa (29-33 ksi) - **Compressive Yield Strength**: 430-490 MPa (62-71 ksi) - **Fracture Toughness (K Ic)**: 30-34 MPa√m - **Bearing Strength**: 750-810 MPa (109-117 ksi) --- #### **5. International Standards** **Primary Specifications:** - **AMS 4414**: Aluminum Alloy 8093 Plate and Sheet - **EN 573-3**: Aluminum and aluminum alloys - Chemical composition - **ISO 209**: Wrought aluminum and aluminum alloys - **GB/T 3190**: Wrought aluminum and aluminum alloy chemical composition **Aerospace Standards:** - **ASTM B909**: Standard Guide for Aluminum Lithium Alloys - **MIL-HDBK-5**: Metallic Materials and Elements for Aerospace Vehicle Structures - **ABD 0031**: Airbus Technical Specification - **BMS 7-336**: Boeing Material Specification --- #### **6. Product Applications** **Aircraft Primary Structures:** - Wing upper and lower surfaces - Fuselage skin panels - Empennage components - Bulkheads and frames - Floor beams and supports **Space Applications:** - Spacecraft structural components - Satellite frames and panels - Launch vehicle structures - Space exploration vehicle components - Space station structural elements **Defense Applications:** - Military aircraft structures - Missile components - Defense system structures - Military vehicle armor components - Specialized defense applications **High-Performance Applications:** - Helicopter airframe components - Racing vehicle structures - High-performance sporting equipment - Advanced transportation systems - Competition aerospace vehicles --- #### **7. Key Characteristics** **Advantages:** - **7% Density Reduction** vs conventional aluminum alloys - **9% Higher Stiffness** - **Excellent Strength-Toughness Combination** - **Superior Corrosion Resistance** - **Excellent Fatigue Performance** - **Good Damage Tolerance** **Performance Benefits:** - Balanced property profile - Enhanced specific strength - Improved stress corrosion resistance - Good manufacturability - Proven aerospace performance --- #### **8. Processing Characteristics** **Heat Treatment:** - **Solution Treatment**: 540-550°C (1004-1022°F) - **Quenching**: Rapid quenching required - **Aging Treatment**: 150-160°C (302-320°F) for 18-24 hours **Machining:** - Good machinability rating: 50% - Requires carbide tooling - Recommended cutting speed: 90-190 m/min - Good surface finish achievable - Standard machining techniques applicable **Forming and Joining:** - **Good Formability** with proper techniques - **Excellent Weldability** (especially FSW) - **Good Adhesive Bonding** characteristics - **Mechanical Fastening** - excellent performance - **Conventional Processes** generally applicable --- #### **9. Corrosion Resistance** **Performance Characteristics:** - **Atmospheric Corrosion**: Excellent resistance - **Stress Corrosion Cracking**: Very good resistance - **Exfoliation Corrosion**: Good resistance - **Galvanic Corrosion**: Requires standard isolation - **Overall Performance**: Superior to most Al-Li alloys **Protection Methods:** - Standard aerospace coatings - Chemical conversion coatings - Anodizing when required - Proper design practices - Regular maintenance --- #### **10. Quality Assurance** **Testing Requirements:** - Chemical composition verification - Mechanical property testing - Fracture toughness evaluation - Corrosion resistance testing - Non-destructive testing **Certification:** - Aerospace quality standards - Full traceability requirements - Customer-specific approvals - Regular quality audits - Nadcap accreditation --- #### **11. Comparison with Other Alloys** | Property | 8093-T8 | 2091-T8 | 2099-T8 | |----------|----------|----------|----------| | Density (g/cm³) | 2.63 | 2.59 | 2.63 | | Tensile Strength (MPa) | 510-570 | 490-550 | 530-590 | | Yield Strength (MPa) | 450-510 | 420-480 | 470-530 | | Corrosion Resistance | Excellent | Good | Very Good | --- #### **Conclusion** Aluminum 8093 alloy represents an optimized aluminum-lithium material that provides an excellent balance of mechanical properties, corrosion resistance, and manufacturability. The moderate lithium content combined with strategic silver addition results in a unique combination of high strength, excellent toughness, and superior corrosion resistance. This balanced property profile makes 8093 particularly suitable for a wide range of aerospace applications where multiple performance requirements must be met simultaneously. The alloy's good processability and compatibility with conventional aerospace manufacturing methods further enhance its appeal for both new aircraft programs and legacy system upgrades. The proven performance and reliability of 8093 continue to make it a preferred choice for engineers seeking optimal solutions for advanced aerospace structures.

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 2264 gallon liquid totes Special package is available on request.