2219-T351 Aluminum alloy,Aluminum 2219-T351 alloy,E FORU

### **Product Datasheet: 2219-T351 Aluminum Alloy** --- #### **1. Overview** 2219-T351 Aluminum Alloy is a high-strength aluminum-copper alloy supplied in the T351 temper (solution heat-treated, stress-relieved by stretching, and naturally aged). This temper condition provides an excellent combination of medium to high strength, improved dimensional stability, and superior stress corrosion cracking resistance. The stretching operation after solution treatment effectively reduces residual stresses, making this alloy particularly suitable for machined components and critical aerospace structures where dimensional accuracy and long-term stability are essential. --- #### **2. International Standards** - **UNS**: UNS A92219 - **ASTM**: ASTM B209 (Standard Specification for Aluminum and Aluminum-Alloy Sheet and Plate) - **AMS**: AMS 4035 (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** | ~34–38 % IACS | | **Thermal Conductivity** | 115–135 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 (T351 Temper Condition)** | Property | Typical Value | |----------|---------------| | **Tensile Strength (Ultimate)** | 360–410 MPa (52–59 ksi) | | **Tensile Yield Strength (0.2% Offset)** | 250–300 MPa (36–44 ksi) | | **Elongation at Break** | 10–16% | | **Compressive Yield Strength** | 260–310 MPa (38–45 ksi) | | **Shear Strength** | 220–260 MPa (32–38 ksi) | | **Bearing Yield Strength** | 480–540 MPa (70–78 ksi) | | **Fracture Toughness** | 28–34 MPa√m | | **Fatigue Strength** | 130–160 MPa (19–23 ksi) | --- #### **6. Key Characteristics & Advantages** - **Stress-Relieved Condition**: Stretching minimizes residual stresses for improved stability - **Excellent Dimensional Stability**: Ideal for precision machined components - **Good Stress Corrosion Resistance**: Suitable for demanding environments - **Natural Aging Characteristics**: Properties stabilize over time - **Superior Weldability**: Maintains excellent welding performance - **Cryogenic Capability**: Excellent low-temperature properties - **Machining Performance**: Good machinability with reduced distortion risk --- #### **7. Product Applications** - **Aircraft Structural Components**: Wing spars, fuselage frames, and bulkheads - **Space Launch Vehicles**: Fuel tank segments and structural rings - **Missile Systems**: Rocket motor cases and structural components - **Cryogenic Storage**: Liquid oxygen and hydrogen tank components - **Precision Machined Parts**: Components requiring dimensional stability - **Welded Structures**: Applications where stress relief is critical --- #### **8. Available Forms** - Plate (6–100 mm thickness) - Sheet (1.0–6.0 mm thickness) - Stress-Relieved Blanks - Custom Machined Components --- #### **9. Processing and Quality Assurance** - **Machining Operations**: Excellent stability for precision machining - **Forming Capability**: Suitable for moderate forming operations - **Welding Performance**: Maintains properties in welded structures - **Natural Aging**: Complete property development in 10-14 days - **Quality Verification**: Ultrasonic inspection for critical applications - **Stress Relief**: Built-in stress relief reduces machining distortion - **Certification**: Full aerospace quality documentation available --- **Disclaimer**: The information presented is typical and for reference only. Actual properties may vary with processing and specific manufacturing conditions. 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 1621 gallon liquid totes Special package is available on request.