2056 Aluminum alloy,Aluminum 2056 alloy,E FORU

### **Aluminum 2056 Alloy Product Introduction** **1. Overview** Aluminum 2056 is a Russian-developed aerospace aluminum-lithium alloy belonging to the Al-Cu-Li-Mg-Ag system. As a third-generation aluminum-lithium alloy, it offers an excellent combination of high strength, low density, and superior damage tolerance. The alloy is specifically designed for aerospace applications where weight reduction and structural efficiency are critical, providing approximately 5-7% density reduction and 10-12% higher stiffness compared to conventional aluminum alloys. **2. International Standards** - **GOST**: ГОСТ 4784-2019 - **AMS**: AMS 4417 - **ASTM**: ASTM B928 - **ISO**: ISO 209 - **UNS**: UNS A92056 **3. Chemical Composition (Weight %)** | Element | Content (%) | |---------|-------------| | Cu | 3.2-3.8 | | Li | 1.4-1.7 | | Mg | 0.4-0.7 | | Ag | 0.3-0.5 | | Mn | 0.2-0.5 | | Zr | 0.08-0.15 | | Zn | ≤0.10 | | Fe | ≤0.10 | | Si | ≤0.08 | | Ti | ≤0.10 | | Other impurities | ≤0.05 each | | Al | Balance | **4. Physical Properties** | Property | Value | |----------|-------| | Density | 2.68 g/cm³ | | Melting Range | 560-650°C | | Electrical Conductivity | 32-36% IACS | | Thermal Conductivity | 100-120 W/m·K | | Coefficient of Thermal Expansion | 22.5 × 10⁻⁶/K (20-100°C) | | Modulus of Elasticity | 78 GPa | **5. Mechanical Properties** *Typical values for T8 temper* | Property | Value | |----------|-------| | Tensile Strength | 540-580 MPa | | Yield Strength | 480-520 MPa | | Elongation | 8-12% | | Compression Yield Strength | 460-500 MPa | | Shear Strength | 300-340 MPa | | Fracture Toughness (KIC) | 30-35 MPa·m¹/² | | Fatigue Strength | 170-190 MPa (10⁷ cycles) | **6. Key Characteristics** - **Lightweight**: 5-7% density reduction compared to conventional aluminum alloys - **High Stiffness**: 10-12% higher modulus than standard aluminum alloys - **Excellent Damage Tolerance**: Superior combination of strength and fracture toughness - **Good Corrosion Resistance**: Enhanced stress corrosion cracking resistance - **Weldability**: Suitable for friction stir welding and MIG welding - **Thermal Stability**: Maintains mechanical properties at elevated temperatures up to 120°C **7. Product Applications** - **Aerospace**: Fuselage skins, wing panels, stringers - **Military Aircraft**: Structural components for combat aircraft - **Space Systems**: Launch vehicle fuel tanks, spacecraft structures - **Commercial Aviation**: Interior structures and secondary load-bearing components - **Marine**: High-performance marine structures **8. Available Forms** - Sheet (0.5-6.0 mm thickness) - Plate (6-150 mm thickness) - Extrusions - Forgings --- **Quality Assurance** All 2056 aluminum alloy products comply with relevant international standards and undergo rigorous quality control including ultrasonic testing, mechanical property verification, and chemical composition analysis.

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 1576 gallon liquid totes Special package is available on request.