2219-T31 Aluminum alloy,Aluminum 2219-T31 alloy,E FORU

### **Product Datasheet: 2219-T31 Aluminum Alloy** --- #### **1. Overview** 2219-T31 Aluminum Alloy is a high-strength aluminum-copper alloy supplied in the T31 temper (solution heat-treated, cold worked, and naturally aged). This temper condition provides a balanced combination of medium strength, good formability, and excellent weldability. The natural aging process allows the alloy to develop stable mechanical properties over time, making it suitable for applications requiring moderate strength with good damage tolerance and manufacturing flexibility. --- #### **2. International Standards** - **UNS**: UNS A92219 - **ASTM**: ASTM B209 (Standard Specification for Aluminum and Aluminum-Alloy Sheet and Plate) - **AMS**: AMS 4034 (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** | ~36–40 % IACS | | **Thermal Conductivity** | 120–140 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 (T31 Temper Condition)** | Property | Typical Value | |----------|---------------| | **Tensile Strength (Ultimate)** | 290–340 MPa (42–49 ksi) | | **Tensile Yield Strength (0.2% Offset)** | 170–220 MPa (25–32 ksi) | | **Elongation at Break** | 12–18% | | **Compressive Yield Strength** | 180–230 MPa (26–33 ksi) | | **Shear Strength** | 190–230 MPa (28–33 ksi) | | **Bearing Yield Strength** | 350–410 MPa (51–59 ksi) | | **Hardness (Brinell)** | 75–95 HB | | **Fatigue Strength** | 110–140 MPa (16–20 ksi) | --- #### **6. Key Characteristics & Advantages** - **Natural Aging Stability**: Properties stabilize through room temperature aging - **Good Formability**: Suitable for moderate forming operations - **Excellent Weldability**: Maintains good welding characteristics - **Cryogenic Toughness**: Performs well at low temperatures - **Damage Tolerance**: Good combination of strength and fracture toughness - **Stress Corrosion Resistance**: Adequate for most applications - **Manufacturing Flexibility**: Can be further aged if required --- #### **7. Product Applications** - **Aircraft Structures**: Fuselage panels and wing components - **Spacecraft Components**: Fuel tank segments and structural members - **Missile Systems**: Rocket motor components and airframes - **Cryogenic Equipment**: Liquid gas storage and handling systems - **Welded Assemblies**: Structures requiring extensive welding - **Prototype Development**: Components for testing and evaluation --- #### **8. Available Forms** - Sheet (0.5–6.0 mm thickness) - Plate (6–25 mm thickness) - Extruded Sections - Formed Components --- #### **9. Processing and Quality Features** - **Forming Operations**: Suitable for bending and moderate shaping - **Machining**: Good machinability with standard tooling - **Welding**: Excellent performance with TIG and MIG processes - **Natural Aging**: Properties develop over 4-10 days at room temperature - **Quality Control**: Standard aerospace quality procedures - **Further Aging**: Can be artificially aged to higher strength tempers --- **Disclaimer**: The information presented is typical and for reference only. Actual properties may vary with processing and natural aging conditions. 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 1620 gallon liquid totes Special package is available on request.