7008 Aluminum alloy,Aluminum 7008 alloy，E FORU

### **Aluminum 7008 Alloy (EN AW-7008) - Product Introduction** **Aluminum 7008** is a high-strength, heat-treatable aluminum-zinc-magnesium-copper alloy specifically designed for applications requiring superior mechanical properties and good stress corrosion resistance. As part of the 7xxx series aluminum alloys, it offers an excellent combination of high strength, toughness, and fatigue resistance, making it suitable for demanding aerospace and structural applications. --- #### **1. Chemical Composition** The chemical composition is optimized for high strength and good corrosion resistance: | Element | Content (%) (Typical) | Standard Range (EN 573-3) | |---|---|---| | **Aluminum (Al)** | Balance | Balance | | **Zinc (Zn)** | 6.5 - 7.5 | 6.5 - 7.5 | | **Magnesium (Mg)** | 1.2 - 2.0 | 1.2 - 2.0 | | **Copper (Cu)** | 0.5 - 1.2 | 0.5 - 1.2 | | **Zirconium (Zr)** | 0.10 - 0.18 | 0.10 - 0.18 | | **Manganese (Mn)** | 0.05 - 0.20 | 0.05 - 0.20 | | **Chromium (Cr)** | 0.05 - 0.15 | 0.05 - 0.15 | | **Iron (Fe)** | ≤ 0.20 | ≤ 0.20 | | **Silicon (Si)** | ≤ 0.15 | ≤ 0.15 | | **Titanium (Ti)** | ≤ 0.05 | ≤ 0.05 | | **Others (Each)** | ≤ 0.05 | ≤ 0.05 | | **Others (Total)** | ≤ 0.15 | ≤ 0.15 | --- #### **2. Physical Properties** Aluminum 7008 exhibits excellent physical properties for high-strength applications: | Property | Metric Value | Imperial Value | |---|---|---| | **Density** | 2.81 g/cm³ | 0.101 lb/in³ | | **Melting Range** | 475 - 635 °C | 887 - 1175 °F | | **Electrical Conductivity** | 34-38 % IACS (T6 Temper) | 34-38 % IACS | | **Thermal Conductivity** | 140-155 W/m·K | 970-1075 BTU·in/(hr·ft²·°F) | | **Coefficient of Thermal Expansion** | 23.8 × 10⁻⁶/K | 13.2 × 10⁻⁶/°F | | **Modulus of Elasticity** | 71 GPa | 10,300 ksi | | **Shear Modulus** | 27 GPa | 3,920 ksi | --- #### **3. Mechanical Properties** Typical mechanical properties for common tempers: | Temper | Tensile Strength (MPa) | Yield Strength (MPa) | Elongation (%) | Hardness (HB) | |---|---|---|---|---| | **T6** | 550-600 | 480-530 | 10-14 | 140-150 | | **T73** | 500-550 | 430-480 | 12-16 | 130-140 | | **T76** | 520-570 | 450-500 | 11-15 | 135-145 | | **T7451** | 510-560 | 440-490 | 11-15 | 132-142 | --- #### **4. International Standards** Aluminum 7008 complies with the following international standards: * **European Standard (EN):** **EN AW-7008** (Material Number 3.4345) * **ISO:** **AlZn7MgCu** under ISO 209 * **AMS:** **AMS 4333** (Aerospace Material Specification) * **ASTM:** **ASTM B247** for Aluminum-Alloy Die Forgings * **EN 586:** Aluminum and aluminum alloys - Forgings * **UNS:** **A97008** * **National Equivalents:** DIN 3.4345 (Germany) --- #### **5. Product Applications** Aluminum 7008 is used in high-performance applications requiring superior mechanical properties: * **Aerospace Structures:** Aircraft structural components, wing spars * **Military Equipment:** Defense system components, military vehicle parts * **High-Performance Sporting Goods:** Bicycle frames, baseball bats * **Automotive Racing:** Racing vehicle components, suspension parts * **Marine Applications:** High-performance boat components * **Industrial Machinery:** High-stress machinery components * **Defense Systems:** Military hardware, weapon system components * **Structural Components:** Critical structural applications --- #### **6. Key Advantages & Characteristics** * **High Strength:** Excellent mechanical properties with tensile strength up to 600 MPa * **Good Toughness:** Balanced combination of strength and fracture toughness * **Fatigue Resistance:** Superior performance under cyclic loading conditions * **Stress Corrosion Resistance:** Good resistance to stress corrosion cracking * **Heat Treatable:** Excellent response to various aging treatments * **Damage Tolerance:** Good resistance to crack propagation * **Weight Savings:** High strength-to-weight ratio * **Thermal Stability:** Maintains properties at moderate temperatures **Heat Treatment Characteristics:** - Solution treatment temperature: 465-475°C (870-885°F) - Artificial aging temperature range: 115-135°C (240-275°F) - Good response to T73 and T76 type overaging treatments - Stable mechanical properties after proper aging **Corrosion Performance:** - Good resistance to stress corrosion cracking - Adequate general corrosion resistance - Suitable for aerospace and military environments - Can be used with protective coatings for severe environments **Manufacturing Characteristics:** - Good forgeability in proper temperature ranges - Suitable for various manufacturing processes - Can be machined with proper tooling and techniques - Weldable using specialized procedures --- **Quality Assurance:** - Strict chemical composition control - Comprehensive mechanical testing - Non-destructive testing capabilities - Full traceability and certification **Conclusion:** Aluminum 7008 represents a premium high-strength aluminum alloy offering an exceptional combination of mechanical properties, damage tolerance, and corrosion resistance. Its superior strength characteristics, combined with good toughness and fatigue performance, make it particularly valuable for aerospace, military, and high-performance applications where reliability and performance are critical. The alloy's ability to be processed through various heat treatment conditions allows manufacturers to tailor properties for specific application requirements, ensuring optimal performance in the most demanding environments. For applications requiring the ultimate in aluminum alloy strength combined with good overall performance characteristics, Aluminum 7008 delivers exceptional value and reliability.

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 2104 gallon liquid totes Special package is available on request.