2139 Aluminum alloy,Aluminum 2139 alloy,E FORU

### **Product Datasheet: 2139 Aluminum Alloy** --- #### **1. Overview** 2139 Aluminum Alloy is a third-generation aluminum-copper-magnesium-silver alloy developed for advanced aerospace and defense applications requiring a superior combination of high strength, excellent damage tolerance, and enhanced ballistic performance. This alloy represents a significant advancement in aluminum technology, offering improved mechanical properties and corrosion resistance compared to traditional 2xxx series alloys, making it particularly suitable for next-generation aircraft and armored vehicle applications. --- #### **2. International Standards** - **UNS**: UNS A92139 - **ASTM**: ASTM B209 (Standard Specification for Aluminum and Aluminum-Alloy Sheet and Plate) - **AMS**: AMS 4415 (Aerospace Material Specification) - **AA (Aluminum Association)**: AA 2139 - **ISO**: ISO 6361-2 (Wrought Aluminum and Aluminum Alloy Sheet, Strip and Plate) --- #### **3. Chemical Composition (Weight %)** | Element | Content (%) | |---------|-------------| | **Aluminum (Al)** | Balance | | **Copper (Cu)** | 4.5–5.5 | | **Magnesium (Mg)** | 0.20–0.8 | | **Silver (Ag)** | 0.15–0.60 | | **Manganese (Mn)** | 0.20–0.6 | | **Zirconium (Zr)** | 0.08–0.15 | | **Vanadium (V)** | 0.05–0.15 | | **Iron (Fe)** | ≤ 0.15 | | **Silicon (Si)** | ≤ 0.10 | | **Zinc (Zn)** | ≤ 0.10 | | **Titanium (Ti)** | ≤ 0.10 | | **Other Elements** | ≤ 0.05 each | | **Total Others** | ≤ 0.15 | --- #### **4. Physical Properties** | Property | Value | |----------|-------| | **Density** | 2.79–2.81 g/cm³ (0.101–0.1015 lb/in³) | | **Melting Range** | ~540–640°C (1000–1185°F) | | **Electrical Conductivity** | ~30–34 % IACS | | **Thermal Conductivity** | 105–125 W/m·K | | **Coefficient of Thermal Expansion** | 22.5–23.5 × 10⁻⁶/°C (20–100°C) | | **Modulus of Elasticity** | 72.0–74.0 GPa (10,450–10,750 ksi) | --- #### **5. Mechanical Properties (Typical Values - T8 Temper)** | Property | Typical Value | |----------|---------------| | **Tensile Strength (Ultimate)** | 530–580 MPa (77–84 ksi) | | **Tensile Yield Strength (0.2% Offset)** | 480–530 MPa (70–77 ksi) | | **Elongation at Break** | 10–14% | | **Compressive Yield Strength** | 490–540 MPa (71–78 ksi) | | **Shear Strength** | 310–350 MPa (45–51 ksi) | | **Bearing Yield Strength** | 780–850 MPa (113–123 ksi) | | **Fracture Toughness (L-T方向)** | 32–38 MPa√m | | **Fatigue Strength** | 160–190 MPa (23–28 ksi) | --- #### **6. Key Characteristics & Advantages** - **Enhanced Ballistic Performance**: Superior performance in armor applications - **Excellent Damage Tolerance**: Outstanding combination of strength and toughness - **Improved Corrosion Resistance**: Better than traditional Al-Cu-Mg alloys - **High Strength-to-Weight Ratio**: Premium mechanical properties for weight-critical applications - **Thermal Stability**: Maintains properties at elevated temperatures - **Good Weldability**: Suitable for various joining techniques - **Silver-Enhanced**: Improved precipitation hardening response --- #### **7. Product Applications** - **Military Aircraft**: Structural components and armor applications - **Armored Vehicles**: Lightweight armor systems and structural components - **Aerospace Structures**: Critical airframe components and wing structures - **Naval Applications**: Ship superstructures and marine armor - **Space Systems**: Launch vehicle components and satellite structures - **Defense Systems**: Military hardware and protective structures --- #### **8. Available Forms** - Plate (10–100 mm thickness) - Sheet (1.0–8.0 mm thickness) - Extruded Profiles - Forging Stock --- #### **9. Processing and Special Considerations** - **Heat Treatment**: Responsive to artificial aging for property optimization - **Machining**: Good machinability with proper techniques - **Forming**: Can be formed in solution heat-treated condition - **Joining**: Weldable using conventional and advanced methods - **Ballistic Testing**: Certified for specific threat levels in armor applications - **Quality Assurance**: Stringent testing for defense applications - **Certification**: Meets military and aerospace quality standards --- **Disclaimer**: The information presented is typical and for reference only. Actual properties may vary with processing, size, and heat treatment. For critical defense 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 1601 gallon liquid totes Special package is available on request.