2219-T42 Aluminum alloy,Aluminum 2219-T42 alloy,E FORU

### **Product Datasheet: 2219-T42 Aluminum Alloy** --- #### **1. Overview** 2219-T42 Aluminum Alloy is a high-strength aluminum-copper alloy supplied in the T42 temper (solution heat-treated and naturally aged). This temper condition provides a good combination of moderate strength, excellent weldability, and natural aging characteristics. The T42 temper is particularly suitable for welded structures where the welding process effectively re-solution treats the material in the heat-affected zone, allowing subsequent natural aging to restore properties throughout the welded assembly. --- #### **2. International Standards** - **UNS**: UNS A92219 - **ASTM**: ASTM B209 (Standard Specification for Aluminum and Aluminum-Alloy Sheet and Plate) - **AMS**: AMS 4038 (Aerospace Material Specification) - **AA (Aluminum Association)**: AA 2219 - **ISO**: ISO 6361-2 (Wrought Aluminum and Aluminum Alloy Sheet, Strip and Plate) --- #### **3. Chemical Composition (Weight %)** | Element | Content (%) | |---------|-------------| | **Aluminum (Al)** | Balance | | **Copper (Cu)** | 5.8–6.8 | | **Manganese (Mn)** | 0.20–0.40 | | **Vanadium (V)** | 0.05–0.15 | | **Zirconium (Zr)** | 0.10–0.25 | | **Iron (Fe)** | ≤ 0.30 | | **Silicon (Si)** | ≤ 0.20 | | **Zinc (Zn)** | ≤ 0.10 | | **Titanium (Ti)** | 0.02–0.10 | | **Other Elements** | ≤ 0.05 each | | **Total Others** | ≤ 0.15 | --- #### **4. Physical Properties** | Property | Value | |----------|-------| | **Density** | 2.77–2.79 g/cm³ (0.100–0.101 lb/in³) | | **Melting Range** | ~540–650°C (1000–1200°F) | | **Electrical Conductivity** | ~38–42 % IACS | | **Thermal Conductivity** | 125–145 W/m·K | | **Coefficient of Thermal Expansion** | 22.3–23.3 × 10⁻⁶/°C (20–100°C) | | **Modulus of Elasticity** | 72.0–74.0 GPa (10,450–10,750 ksi) | --- #### **5. Mechanical Properties (T42 Temper Condition)** | Property | Typical Value | |----------|---------------| | **Tensile Strength (Ultimate)** | 270–320 MPa (39–46 ksi) | | **Tensile Yield Strength (0.2% Offset)** | 160–210 MPa (23–30 ksi) | | **Elongation at Break** | 14–20% | | **Compressive Yield Strength** | 170–220 MPa (25–32 ksi) | | **Shear Strength** | 180–220 MPa (26–32 ksi) | | **Bearing Yield Strength** | 320–380 MPa (46–55 ksi) | | **Hardness (Brinell)** | 70–90 HB | | **Fatigue Strength** | 100–130 MPa (15–19 ksi) | --- #### **6. Key Characteristics & Advantages** - **Natural Aging Capability**: Properties develop and stabilize at room temperature - **Excellent Weldability**: Ideal for welded structures and assemblies - **Property Restoration**: Welding re-solution treats HAZ, allowing natural aging recovery - **Good Formability**: Suitable for moderate forming operations - **Cryogenic Performance**: Maintains toughness at low temperatures - **Stress Corrosion Resistance**: Adequate for most service conditions - **Manufacturing Flexibility**: Versatile for various fabrication processes --- #### **7. Product Applications** - **Welded Aerospace Structures**: Fuel tanks and pressure vessels - **Spacecraft Components**: Cryogenic tank assemblies - **Aircraft Structures**: Welded fuselage and wing components - **Missile Systems**: Welded rocket motor cases - **Cryogenic Equipment**: Liquid gas storage systems - **Marine Structures**: Welded marine components --- #### **8. Available Forms** - Sheet (0.8–6.0 mm thickness) - Plate (6–50 mm thickness) - Welding Wire and Filler Metal - Fabricated Assemblies --- #### **9. Processing and Quality Features** - **Welding Performance**: Excellent for all common welding processes - **Post-Weld Aging**: Natural aging restores properties in heat-affected zones - **Forming Operations**: Good formability for moderate shapes - **Machining**: Good machinability with standard tooling - **Natural Aging Cycle**: Complete property development in 10-14 days - **Quality Control**: Standard aerospace quality procedures - **Certification**: Meets aerospace welding standards --- **Disclaimer**: The information presented is typical and for reference only. Actual properties may vary with processing and specific manufacturing conditions. For welded aerospace applications, contact our technical service team for specific data and welding procedure 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 1624 gallon liquid totes Special package is available on request.