2219-O Aluminum alloy,Aluminum 2219-O alloy,E FORU

### **Product Datasheet: 2219-O Aluminum Alloy** --- #### **1. Overview** 2219-O Aluminum Alloy is a high-strength aluminum-copper alloy supplied in the annealed (O) temper condition. This heat-treatable alloy is renowned for its excellent weldability, good toughness, and superior performance at cryogenic temperatures. In the O temper, the alloy achieves maximum formability and ductility, making it ideal for complex forming operations before subsequent heat treatment to higher strength tempers for final application in aerospace and cryogenic systems. --- #### **2. International Standards** - **UNS**: UNS A92219 - **ASTM**: ASTM B209 (Standard Specification for Aluminum and Aluminum-Alloy Sheet and Plate) - **AMS**: AMS 4033 (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** | ~40–44 % IACS | | **Thermal Conductivity** | 130–150 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 (O Temper Condition)** | Property | Typical Value | |----------|---------------| | **Tensile Strength (Ultimate)** | 170–220 MPa (25–32 ksi) | | **Tensile Yield Strength (0.2% Offset)** | 75–110 MPa (11–16 ksi) | | **Elongation at Break** | 16–22% | | **Compressive Yield Strength** | 80–120 MPa (12–17 ksi) | | **Shear Strength** | 110–150 MPa (16–22 ksi) | | **Hardness (Brinell)** | 45–65 HB | | **Bearing Yield Strength** | 130–180 MPa (19–26 ksi) | | **Fatigue Strength** | 80–110 MPa (12–16 ksi) | --- #### **6. Key Characteristics & Advantages** - **Maximum Formability**: Excellent for complex shaping and deep drawing operations - **Superior Weldability**: One of the most weldable aluminum-copper alloys - **Age Hardenable**: Can be heat treated to T3, T6, T8, or T87 tempers - **Excellent Cryogenic Properties**: Maintains toughness at extremely low temperatures - **Good Stress Corrosion Resistance**: Suitable for demanding environments - **High Fracture Toughness**: Good damage tolerance characteristics - **Thermal Stability**: Performs well across wide temperature ranges --- #### **7. Product Applications** - **Aerospace Structures**: Components requiring complex forming before heat treatment - **Space Launch Vehicles**: Cryogenic fuel tanks and oxidizer containers - **Aircraft Components**: Fuselage skins and structural members - **Missile Systems**: Rocket motor cases and structural components - **Cryogenic Storage**: Liquid gas containers and transfer systems - **Welded Structures**: Applications requiring extensive welding operations --- #### **8. Available Forms** - Sheet (0.5–6.0 mm thickness) - Plate (6–150 mm thickness) - Forging Stock - Extruded Shapes - Welding Wire --- #### **9. Processing and Heat Treatment** - **Forming Operations**: Excellent for stamping, deep drawing, and spinning - **Machining**: Good machinability in annealed condition - **Welding**: All common welding methods applicable (TIG, MIG, EB) - **Solution Treatment**: Typically 535–545°C (995–1015°F) - **Aging Options**: Natural aging (T3/T4) or artificial aging (T6/T8/T87) - **Quality Control**: Standard aluminum processing techniques applicable --- **Disclaimer**: The information presented is typical and for reference only. Actual properties may vary with processing and subsequent 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 1619 gallon liquid totes Special package is available on request.