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

### **Product Datasheet: Alclad 2219-O Aluminum Alloy** --- #### **1. Overview** Alclad 2219-O Aluminum Alloy is a high-strength aluminum-copper alloy supplied in the annealed (O) temper condition with a protective aluminum cladding layer. The Alclad coating provides superior corrosion resistance while the 2219-O core material offers excellent formability and weldability. This combination makes it ideal for applications requiring complex forming operations before subsequent heat treatment, particularly in aerospace and cryogenic applications where corrosion protection and manufacturing flexibility are critical. --- #### **2. International Standards** - **UNS**: UNS A92219 - **ASTM**: ASTM B209 (Standard Specification for Aluminum and Aluminum-Alloy Sheet and Plate) - **AMS**: AMS 4119 (Aerospace Material Specification) - **AA (Aluminum Association)**: AA 2219 - **ISO**: ISO 6361-2 (Wrought Aluminum and Aluminum Alloy Sheet, Strip and Plate) --- #### **3. Chemical Composition** **Core Material (2219) - 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 | **Cladding Material** Pure aluminum or aluminum alloy coating (typically 1XXX series) providing cathodic protection to the core material. --- #### **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** | 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% | | **Shear Strength** | 110–150 MPa (16–22 ksi) | | **Hardness (Brinell)** | 45–65 HB | | **Bearing Strength** | 130–180 MPa (19–26 ksi) | | **Clad Layer Thickness** | 2.5–5% per side (total 5–10%) | --- #### **6. Key Characteristics & Advantages** - **Superior Corrosion Protection**: Alclad coating provides sacrificial protection - **Excellent Formability**: Maximum ductility for complex shaping operations - **Age Hardenable**: Can be heat treated to T3, T6, or T8 tempers after forming - **Excellent Weldability**: Maintains good welding characteristics after cladding - **Cryogenic Performance**: Suitable for low-temperature applications - **Cathodic Protection**: Cladding protects core material sacrificially - **Manufacturing Flexibility**: Ideal for parts requiring extensive forming --- #### **7. Product Applications** - **Aerospace Structures**: Fuselage skins and wing panels requiring forming - **Cryogenic Tanks**: Liquid fuel tanks for space launch vehicles - **Aircraft Components**: Parts requiring complex forming before heat treatment - **Marine Applications**: Components exposed to corrosive environments - **Chemical Equipment**: Vessels and containers for corrosive substances - **Architectural Applications**: Decorative and structural elements --- #### **8. Available Forms** - Sheet (0.5–6.0 mm thickness) - Plate (6–50 mm thickness) - Custom Sized Blanks - Pre-formed Components --- #### **9. Processing and Special Considerations** - **Forming Operations**: Excellent for deep drawing and stretch forming - **Heat Treatment**: Can be solution treated and aged after forming - **Welding**: Maintains corrosion protection at weld zones - **Machining**: Good machinability in annealed condition - **Surface Quality**: Superior corrosion resistance without additional coating - **Quality Control**: Strict adherence to clad thickness specifications --- **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 1611 gallon liquid totes Special package is available on request.