2224 Aluminum alloy,Aluminum 2224 alloy,E FORU

### **Product Datasheet: 2224 Aluminum Alloy** --- #### **1. Overview** 2224 Aluminum Alloy is a high-strength aluminum-copper-magnesium alloy developed as an improved version of the 2024 alloy, offering superior combinations of strength, fracture toughness, and fatigue resistance. Primarily available in T3-type tempers, this alloy is specifically designed for aerospace applications requiring excellent damage tolerance and mechanical performance in sheet and plate products. 2224 represents an optimized composition that provides enhanced property combinations compared to conventional 2xxx series alloys. --- #### **2. International Standards** - **UNS**: UNS A92224 - **ASTM**: ASTM B209 (Standard Specification for Aluminum and Aluminum-Alloy Sheet and Plate) - **AMS**: AMS 4224 (Aerospace Material Specification) - **AA (Aluminum Association)**: AA 2224 - **ISO**: ISO 6361-2 (Wrought Aluminum and Aluminum Alloy Sheet, Strip and Plate) --- #### **3. Chemical Composition (Weight %)** | Element | Content (%) | |---------|-------------| | **Aluminum (Al)** | Balance | | **Copper (Cu)** | 3.8–4.4 | | **Magnesium (Mg)** | 1.2–1.8 | | **Manganese (Mn)** | 0.30–0.9 | | **Iron (Fe)** | ≤ 0.15 | | **Silicon (Si)** | ≤ 0.12 | | **Zinc (Zn)** | ≤ 0.25 | | **Chromium (Cr)** | ≤ 0.10 | | **Titanium (Ti)** | ≤ 0.15 | | **Other Elements** | ≤ 0.05 each | | **Total Others** | ≤ 0.15 | --- #### **4. Physical Properties** | Property | Value | |----------|-------| | **Density** | 2.78–2.80 g/cm³ (0.100–0.101 lb/in³) | | **Melting Range** | ~550–640°C (1020–1185°F) | | **Electrical Conductivity** | ~35–39 % IACS | | **Thermal Conductivity** | 120–140 W/m·K | | **Coefficient of Thermal Expansion** | 22.8–23.8 × 10⁻⁶/°C (20–100°C) | | **Modulus of Elasticity** | 71.0–73.0 GPa (10,300–10,600 ksi) | --- #### **5. Mechanical Properties (Typical Values - T351 Temper)** | Property | Typical Value | |----------|---------------| | **Tensile Strength (Ultimate)** | 420–470 MPa (61–68 ksi) | | **Tensile Yield Strength (0.2% Offset)** | 290–340 MPa (42–49 ksi) | | **Elongation at Break** | 12–17% | | **Compressive Yield Strength** | 300–350 MPa (44–51 ksi) | | **Shear Strength** | 250–290 MPa (36–42 ksi) | | **Bearing Yield Strength** | 580–640 MPa (84–93 ksi) | | **Fracture Toughness (L-T方向)** | 32–38 MPa√m | | **Fatigue Strength** | 150–180 MPa (22–26 ksi) | --- #### **6. Key Characteristics & Advantages** - **Enhanced Damage Tolerance**: Superior fracture toughness compared to standard 2024 alloy - **Improved Fatigue Performance**: Excellent resistance to crack initiation and growth - **Optimized Composition**: Carefully balanced alloying elements for maximum performance - **Good Strength-to-Weight Ratio**: High mechanical properties with aluminum's light weight - **Stress Corrosion Resistance**: Adequate performance with proper temper selection - **Aerospace Proven**: Extensive use in commercial and military aircraft - **Manufacturing Compatibility**: Suitable for standard aerospace fabrication methods --- #### **7. Product Applications** - **Aircraft Lower Wing Skins**: Primary application for commercial airliners - **Fuselage Structures**: Skin panels and structural components - **Wing Panels**: Upper and lower wing surfaces - **Military Aircraft**: Structural components requiring damage tolerance - **Spacecraft Components**: Secondary structural elements - **Helicopter Structures**: Airframe components and panels --- #### **8. Available Forms** - Sheet (0.8–6.0 mm thickness) - Plate (6–80 mm thickness) - Custom Sized Blanks - Pre-formed Components --- #### **9. Processing and Quality Assurance** - **Heat Treatment**: Typically supplied in T351 or T39 tempers - **Machining**: Good machinability with proper techniques - **Forming**: Suitable for forming operations in appropriate tempers - **Welding**: Can be welded with proper procedures - **Surface Protection**: Requires corrosion protection for severe environments - **Quality Control**: Stringent aerospace quality standards - **Certification**: Full traceability and material certification --- **Disclaimer**: The information presented is typical and for reference only. Actual properties may vary with processing, temper condition, and specific manufacturing parameters. For critical aerospace 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 1629 gallon liquid totes Special package is available on request.