2195 Aluminum alloy,Aluminum 2195 alloy,E FORU

### **Product Datasheet: 2195 Aluminum Alloy** --- #### **1. Overview** 2195 Aluminum Alloy is a revolutionary aluminum-lithium (Al-Cu-Li) alloy that represents a major advancement in lightweight aerospace materials. Developed through a joint NASA-Lockheed Martin program, this third-generation Al-Li alloy offers an exceptional combination of low density, high strength, excellent cryogenic properties, and superior weldability. 2195 has become the material of choice for space launch vehicle fuel tanks and advanced aerospace structures where weight reduction is critical for performance and efficiency. --- #### **2. International Standards** - **UNS**: UNS A92195 - **ASTM**: ASTM B209 (Standard Specification for Aluminum and Aluminum-Alloy Sheet and Plate) - **AMS**: AMS 4413 (Aerospace Material Specification) - **AA (Aluminum Association)**: AA 2195 - **NASA**: MSFC-SPEC-250 (NASA Material Specification) - **ISO**: ISO 6361-2 (Wrought Aluminum and Aluminum Alloy Sheet, Strip and Plate) --- #### **3. Chemical Composition (Weight %)** | Element | Content (%) | |---------|-------------| | **Aluminum (Al)** | Balance | | **Copper (Cu)** | 3.7–4.3 | | **Lithium (Li)** | 0.8–1.2 | | **Magnesium (Mg)** | 0.25–0.8 | | **Silver (Ag)** | 0.25–0.60 | | **Zirconium (Zr)** | 0.08–0.16 | | **Manganese (Mn)** | 0.10–0.50 | | **Iron (Fe)** | ≤ 0.15 | | **Silicon (Si)** | ≤ 0.12 | | **Zinc (Zn)** | ≤ 0.25 | | **Titanium (Ti)** | ≤ 0.10 | | **Other Elements** | ≤ 0.05 each | | **Total Others** | ≤ 0.15 | --- #### **4. Physical Properties** | Property | Value | |----------|-------| | **Density** | 2.70–2.72 g/cm³ (0.0975–0.0982 lb/in³) | | **Melting Range** | ~545–650°C (1010–1200°F) | | **Electrical Conductivity** | ~32–36 % IACS | | **Thermal Conductivity** | 95–115 W/m·K | | **Coefficient of Thermal Expansion** | 22.2–23.2 × 10⁻⁶/°C (20–100°C) | | **Modulus of Elasticity** | 77.0–79.0 GPa (11,200–11,500 ksi) | --- #### **5. Mechanical Properties (Typical Values - T8 Temper)** | Property | Typical Value | |----------|---------------| | **Tensile Strength (Ultimate)** | 550–600 MPa (80–87 ksi) | | **Tensile Yield Strength (0.2% Offset)** | 500–550 MPa (73–80 ksi) | | **Elongation at Break** | 8–12% | | **Compressive Yield Strength** | 510–560 MPa (74–81 ksi) | | **Shear Strength** | 320–360 MPa (46–52 ksi) | | **Bearing Yield Strength** | 820–890 MPa (119–129 ksi) | | **Fracture Toughness (L-T方向)** | 30–36 MPa√m | | **Fatigue Strength** | 170–200 MPa (25–29 ksi) | --- #### **6. Key Characteristics & Advantages** - **Significant Weight Reduction**: 5–7% lower density than conventional aluminum alloys - **Exceptional Cryogenic Properties**: Excellent toughness at liquid hydrogen temperatures - **Superior Weldability**: Excellent performance in welded structures - **High Strength-to-Weight Ratio**: Outstanding mechanical properties for weight-critical applications - **Enhanced Stiffness**: 8–10% higher modulus than traditional aluminum alloys - **Space-Proven Reliability**: Extensive use in successful space missions - **Good Corrosion Resistance**: Improved over earlier Al-Li alloys --- #### **7. Product Applications** - **Space Launch Vehicles**: Space Shuttle External Tank, SpaceX Falcon rockets - **Aircraft Structures**: Advanced fighter aircraft and commercial airliners - **Cryogenic Tanks**: Liquid hydrogen and oxygen storage tanks - **Satellite Components**: Structural elements and support frames - **Military Aircraft**: High-performance military platform structures - **Racing Applications**: High-performance automotive and motorsport components --- #### **8. Available Forms** - Plate (10–200 mm thickness) - Sheet (1.0–10.0 mm thickness) - Extruded Profiles - Forgings - Welded Panels --- #### **9. Processing and Special Considerations** - **Welding Technology**: Excellent for friction stir welding and fusion welding - **Heat Treatment**: Requires precise control for optimal properties - **Cryogenic Service**: Specifically designed for low-temperature applications - **Forming Operations**: Good formability in solution heat-treated condition - **Quality Assurance**: Stringent NASA-level quality requirements - **Certification**: Meets rigorous spaceflight qualification standards --- **Disclaimer**: The information presented is typical and for reference only. Actual properties may vary with processing, size, and heat treatment. For critical aerospace and space applications, contact our technical service team for specific data and certification requirements.

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 1602 gallon liquid totes Special package is available on request.