2297 Aluminum alloy,Aluminum 2297 alloy,E FORU

### **Product Datasheet: 2297 Aluminum Alloy** --- #### **1. Overview** 2297 Aluminum Alloy is a third-generation aluminum-lithium (Al-Cu-Li) alloy specifically developed for damage-tolerant aerospace applications requiring excellent combinations of strength, fracture toughness, and corrosion resistance. This advanced alloy offers significant weight savings compared to conventional aluminum alloys while providing superior performance in thick-section applications. 2297 is particularly designed for military aircraft structures where durability, reliability, and weight reduction are critical requirements. --- #### **2. International Standards** - **UNS**: UNS A92297 - **ASTM**: ASTM B209 (Standard Specification for Aluminum and Aluminum-Alloy Sheet and Plate) - **AMS**: AMS 4330 (Aerospace Material Specification) - **AA (Aluminum Association)**: AA 2297 - **ISO**: ISO 6361-2 (Wrought Aluminum and Aluminum Alloy Sheet, Strip and Plate) --- #### **3. Chemical Composition (Weight %)** | Element | Content (%) | |---------|-------------| | **Aluminum (Al)** | Balance | | **Copper (Cu)** | 2.5–3.1 | | **Lithium (Li)** | 1.1–1.7 | | **Magnesium (Mg)** | 0.25–0.8 | | **Manganese (Mn)** | 0.10–0.5 | | **Zirconium (Zr)** | 0.08–0.15 | | **Zinc (Zn)** | ≤ 0.25 | | **Iron (Fe)** | ≤ 0.10 | | **Silicon (Si)** | ≤ 0.10 | | **Titanium (Ti)** | ≤ 0.10 | | **Other Elements** | ≤ 0.05 each | | **Total Others** | ≤ 0.15 | --- #### **4. Physical Properties** | Property | Value | |----------|-------| | **Density** | 2.65–2.67 g/cm³ (0.0957–0.0964 lb/in³) | | **Melting Range** | ~555–650°C (1030–1200°F) | | **Electrical Conductivity** | ~28–32 % IACS | | **Thermal Conductivity** | 90–110 W/m·K | | **Coefficient of Thermal Expansion** | 21.8–22.8 × 10⁻⁶/°C (20–100°C) | | **Modulus of Elasticity** | 77.5–79.5 GPa (11,250–11,550 ksi) | --- #### **5. Mechanical Properties (Typical Values - T8 Temper)** | Property | Typical Value | |----------|---------------| | **Tensile Strength (Ultimate)** | 460–510 MPa (67–74 ksi) | | **Tensile Yield Strength (0.2% Offset)** | 410–460 MPa (59–67 ksi) | | **Elongation at Break** | 10–14% | | **Compressive Yield Strength** | 420–470 MPa (61–68 ksi) | | **Shear Strength** | 270–310 MPa (39–45 ksi) | | **Bearing Yield Strength** | 670–730 MPa (97–106 ksi) | | **Fracture Toughness (L-T方向)** | 33–39 MPa√m | | **Fatigue Strength** | 160–190 MPa (23–28 ksi) | --- #### **6. Key Characteristics & Advantages** - **Excellent Damage Tolerance**: Superior fracture toughness and fatigue crack growth resistance - **Weight Reduction**: 7–9% lower density than conventional aluminum alloys - **Enhanced Stiffness**: 8–10% higher modulus than traditional aluminum alloys - **Improved Corrosion Resistance**: Better performance than earlier Al-Li alloys - **Thick-Section Capability**: Consistent properties in heavy plate applications - **Good Thermal Stability**: Maintains properties at elevated temperatures - **Military Qualification**: Meets stringent military aircraft requirements --- #### **7. Product Applications** - **Military Aircraft Structures**: F-16 fighter bulkheads and airframe components - **Aircraft Fuselage Components**: Skin panels and structural members - **Wing Structures**: Spars, ribs, and support components - **Helicopter Components**: Airframe structures and mounting components - **Defense Applications**: Military vehicle structural components - **Spacecraft**: Secondary structural elements --- #### **8. Available Forms** - Plate (12–100 mm thickness) - Sheet (1.0–8.0 mm thickness) - Forging Stock - Custom Machined Components --- #### **9. Processing and Quality Features** - **Heat Treatment**: Responsive to artificial aging for property optimization - **Machining**: Good machinability with standard aluminum techniques - **Forming**: Suitable for forming operations with proper methods - **Welding**: Good weldability with conventional processes - **Surface Protection**: Compatible with military coating systems - **Quality Assurance**: Meets military and aerospace quality standards - **Certification**: Full military qualification documentation available --- **Disclaimer**: The information presented is typical and for reference only. Actual properties may vary with processing and specific manufacturing conditions. For military and aerospace 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 1632 gallon liquid totes Special package is available on request.