2090-T86 Aluminum alloy,Aluminum 2090-T86 alloy,E FORU

### **Product Datasheet: 2090-T86 Aluminum Alloy** --- #### **1. Overview** 2090-T86 Aluminum Alloy is a first-generation aluminum-lithium (Al-Cu-Li) alloy supplied in the T86 temper (solution heat-treated, cold worked, and artificially aged to achieve higher strength levels). This temper provides the highest strength among the 2090 alloy variants while maintaining the characteristic weight reduction benefits of aluminum-lithium technology. The T86 condition is specifically designed for applications requiring maximum specific strength and good fatigue performance in aerospace structures. --- #### **2. International Standards** - **UNS**: UNS A92090 - **ASTM**: ASTM B209 (Standard Specification for Aluminum and Aluminum-Alloy Sheet and Plate) - **AMS**: AMS 4257 (Aerospace Material Specification) - **AA (Aluminum Association)**: AA 2090 - **ISO**: ISO 6361-2 (Wrought Aluminum and Aluminum Alloy Sheet, Strip and Plate) --- #### **3. Chemical Composition (Weight %)** | Element | Content (%) | |---------|-------------| | **Aluminum (Al)** | Balance | | **Copper (Cu)** | 2.4–3.0 | | **Lithium (Li)** | 1.9–2.6 | | **Zirconium (Zr)** | 0.08–0.15 | | **Iron (Fe)** | ≤ 0.12 | | **Silicon (Si)** | ≤ 0.10 | | **Manganese (Mn)** | ≤ 0.05 | | **Magnesium (Mg)** | ≤ 0.05 | | **Zinc (Zn)** | ≤ 0.10 | | **Titanium (Ti)** | ≤ 0.15 | | **Other Elements** | ≤ 0.05 each | | **Total Others** | ≤ 0.15 | --- #### **4. Physical Properties** | Property | Value | |----------|-------| | **Density** | 2.59–2.61 g/cm³ (0.0935–0.0942 lb/in³) | | **Melting Range** | ~570–660°C (1060–1220°F) | | **Electrical Conductivity** | ~18–22 % IACS | | **Thermal Conductivity** | 55–75 W/m·K | | **Coefficient of Thermal Expansion** | 21.0–22.0 × 10⁻⁶/°C (20–100°C) | | **Modulus of Elasticity** | 77.0–79.0 GPa (11,200–11,500 ksi) | --- #### **5. Mechanical Properties (T86 Temper Condition)** | Property | Typical Value | |----------|---------------| | **Tensile Strength (Ultimate)** | 520–570 MPa (75–83 ksi) | | **Tensile Yield Strength (0.2% Offset)** | 470–520 MPa (68–75 ksi) | | **Elongation at Break** | 5–9% | | **Compressive Yield Strength** | 480–530 MPa (70–77 ksi) | | **Shear Strength** | 310–350 MPa (45–51 ksi) | | **Bearing Yield Strength** | 730–790 MPa (106–115 ksi) | | **Fracture Toughness (L-T方向)** | 22–28 MPa√m | | **Fatigue Strength** | 160–190 MPa (10⁷ cycles) | --- #### **6. Key Characteristics & Advantages** - **Maximum Strength Condition**: Highest strength level available for 2090 alloy - **Superior Weight Reduction**: 8–10% lower density than conventional aluminum alloys - **Enhanced Stiffness**: 10–12% higher modulus than traditional aluminum alloys - **Good Fatigue Performance**: Suitable for high-cycle fatigue applications - **Cryogenic Capability**: Excellent properties maintained at low temperatures - **Anisotropic Properties**: Significant variation in properties with orientation - **Optimized Aging**: Extended artificial aging for peak strength development --- #### **7. Product Applications** - **Aircraft Primary Structures**: High-stress wing and fuselage components - **Space Launch Systems**: Cryogenic fuel tank structures - **Military Aircraft**: Critical load-bearing components - **Satellite Structures**: Primary structural elements - **Rocket Components**: Motor cases and structural supports - **Helicopter Components**: High-stress dynamic components --- #### **8. Available Forms** - Sheet (0.8–6.0 mm thickness) - Plate (6–100 mm thickness) - Extruded Profiles and Bars - Forging Stock --- #### **9. Special Considerations** - **Limited Formability**: Minimal forming capability in T86 temper - **Machining Requirements**: Special techniques needed due to high strength and lithium content - **Heat Treatment Sensitivity**: Critical control of aging parameters required - **Anisotropy Management**: Essential consideration in design and manufacturing - **Corrosion Protection**: Comprehensive protection systems required - **Joining Considerations**: Special procedures for welding and fastening - **Quality Verification**: Extensive testing required for critical applications --- **Disclaimer**: The information presented is typical and for reference only. Actual properties may vary with processing, size, and heat treatment. For critical applications, contact our technical service team for specific data and processing recommendations.

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 1585 gallon liquid totes Special package is available on request.