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

### **Product Datasheet: Alclad 2219-T351 Aluminum Alloy** --- #### **1. Overview** Alclad 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) with a protective aluminum cladding layer. This combination provides excellent strength, good damage tolerance, and superior corrosion resistance, making it particularly suitable for aerospace applications where structural integrity and environmental durability are critical requirements. --- #### **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 (1XXX series) coating, typically comprising 2.5-5% of total thickness per side. --- #### **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** - **Superior Corrosion Protection**: Alclad coating provides sacrificial cathodic protection - **Stress-Relieved**: Stretching after solution treatment minimizes residual stresses - **Excellent Damage Tolerance**: Good combination of strength and fracture toughness - **Natural Aging Stability**: Properties stabilize after natural aging period - **Outstanding Weldability**: Excellent performance in welded structures - **Cryogenic Capability**: Maintains toughness at extremely low temperatures - **Aerospace Qualified**: Proven performance in demanding applications --- #### **7. Product Applications** - **Aircraft Fuselage Skins**: Primary and secondary structural panels - **Space Launch Vehicles**: Fuel tanks and structural components - **Wing Structures**: Upper and lower wing surfaces - **Cryogenic Applications**: Liquid oxygen and hydrogen tanks - **Military Aircraft**: Structural components requiring corrosion protection - **Marine Aerospace**: Components exposed to saltwater environments --- #### **8. Available Forms** - Plate (6–100 mm thickness) - Sheet (1.0–6.0 mm thickness) - Stress-Relieved Blanks - Custom Sized Panels --- #### **9. Processing and Quality Assurance** - **Machining**: Good machinability with proper tooling and techniques - **Forming**: Suitable for moderate forming operations - **Welding**: Excellent weldability with various processes including TIG and MIG - **Heat Treatment**: May be artificially aged for higher strength if required - **Quality Control**: 100% ultrasonic inspection available - **Corrosion Protection**: Built-in Alclad protection reduces maintenance requirements - **Certification**: Full traceability and aerospace certification --- **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 1613 gallon liquid totes Special package is available on request.