2197 Aluminum alloy,Aluminum 2197 alloy,E FORU

### **Product Datasheet: 2197 Aluminum Alloy** --- #### **1. Overview** 2197 Aluminum Alloy is a third-generation aluminum-lithium (Al-Cu-Li) alloy specifically developed for damage-tolerant aerospace applications requiring excellent fatigue performance and corrosion resistance. This advanced alloy offers a superior combination of medium strength, exceptional fracture toughness, and significant weight reduction compared to conventional aluminum alloys. 2197 is particularly designed for thick-plate applications in aircraft structures where durability and longevity are critical requirements. --- #### **2. International Standards** - **UNS**: UNS A92197 - **ASTM**: ASTM B209 (Standard Specification for Aluminum and Aluminum-Alloy Sheet and Plate) - **AMS**: AMS 4335 (Aerospace Material Specification) - **AA (Aluminum Association)**: AA 2197 - **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)** | 1.3–1.7 | | **Magnesium (Mg)** | 0.25–0.8 | | **Zirconium (Zr)** | 0.08–0.15 | | **Manganese (Mn)** | 0.10–0.50 | | **Zinc (Zn)** | ≤ 0.10 | | **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** | 2.63–2.65 g/cm³ (0.0950–0.0957 lb/in³) | | **Melting Range** | ~555–650°C (1030–1200°F) | | **Electrical Conductivity** | ~30–34 % 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)** | 440–490 MPa (64–71 ksi) | | **Tensile Yield Strength (0.2% Offset)** | 380–430 MPa (55–62 ksi) | | **Elongation at Break** | 10–14% | | **Compressive Yield Strength** | 390–440 MPa (57–64 ksi) | | **Shear Strength** | 260–300 MPa (38–44 ksi) | | **Bearing Yield Strength** | 630–690 MPa (91–100 ksi) | | **Fracture Toughness (L-T方向)** | 35–41 MPa√m | | **Fatigue Strength** | 150–180 MPa (22–26 ksi) | --- #### **6. Key Characteristics & Advantages** - **Exceptional Damage Tolerance**: Superior fracture toughness and fatigue crack growth resistance - **Significant Weight Reduction**: 7–9% lower density than conventional aluminum alloys - **Enhanced Corrosion Resistance**: Excellent stress corrosion cracking resistance - **Good Strength Balance**: Optimal combination of strength and toughness - **Thick-Section Capability**: Consistent properties in heavy plate applications - **Reduced Anisotropy**: More uniform properties than earlier Al-Li alloys - **Thermal Stability**: Maintains properties at elevated temperatures --- #### **7. Product Applications** - **Aircraft Fuselage Components**: Skin panels and bulkheads - **Wing Structures**: Lower wing skins and support structures - **Military Aircraft**: F-16 fighter bulkheads and structural components - **Commercial Aviation**: Regional jet and business aircraft structures - **Helicopter Components**: Airframe structures and mounting components - **Space Applications**: Satellite structures and support frames --- #### **8. Available Forms** - Plate (12–100 mm thickness) - Sheet (1.0–8.0 mm thickness) - Forging Stock --- #### **9. Processing and Quality Features** - **Heat Treatment**: Responsive to artificial aging for property optimization - **Machining**: Good machinability with standard aluminum cutting tools - **Forming**: Suitable for forming operations with proper techniques - **Joining**: Good weldability with conventional methods - **Surface Protection**: Compatible with standard aerospace coating systems - **Quality Assurance**: Meets rigorous aerospace quality standards - **Certification**: Full traceability and documentation available --- **Disclaimer**: The information presented is typical and for reference only. Actual properties may vary with processing, size, and heat treatment. For critical 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 1604 gallon liquid totes Special package is available on request.