7025 Aluminum alloy,Aluminum 7025 alloy，E FORU

### **Aluminum 7025 Alloy (EN AW-7025) - Product Introduction** **Aluminum 7025** is a high-strength, heat-treatable aluminum-zinc-magnesium-copper alloy specifically developed for applications requiring excellent strength, good toughness, and superior fatigue performance. As part of the 7xxx series aluminum alloys, it offers an optimal balance of mechanical properties and corrosion resistance, making it suitable for demanding aerospace, defense, and high-performance structural applications. --- #### **1. Chemical Composition** The chemical composition is carefully balanced for high performance: | Element | Content (%) (Typical) | Standard Range | |---|---|---| | **Aluminum (Al)** | Balance | Balance | | **Zinc (Zn)** | 5.5 - 6.5 | 5.5 - 6.5 | | **Magnesium (Mg)** | 2.2 - 2.9 | 2.2 - 2.9 | | **Copper (Cu)** | 1.0 - 1.7 | 1.0 - 1.7 | | **Zirconium (Zr)** | 0.10 - 0.18 | 0.10 - 0.18 | | **Manganese (Mn)** | 0.05 - 0.15 | 0.05 - 0.15 | | **Chromium (Cr)** | 0.08 - 0.16 | 0.08 - 0.16 | | **Iron (Fe)** | ≤ 0.15 | ≤ 0.15 | | **Silicon (Si)** | ≤ 0.12 | ≤ 0.12 | | **Titanium (Ti)** | ≤ 0.05 | ≤ 0.05 | | **Others (Each)** | ≤ 0.05 | ≤ 0.05 | | **Others (Total)** | ≤ 0.15 | ≤ 0.15 | --- #### **2. Physical Properties** Aluminum 7025 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** | 35-39 % IACS (T6 Temper) | 35-39 % IACS | | **Thermal Conductivity** | 140-155 W/m·K | 970-1075 BTU·in/(hr·ft²·°F) | | **Coefficient of Thermal Expansion** | 23.6 × 10⁻⁶/K | 13.1 × 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** | 540-590 | 470-520 | 10-14 | 145-155 | | **T651** | 550-600 | 480-530 | 9-13 | 148-158 | | **T7351** | 500-550 | 430-480 | 11-15 | 135-145 | | **T7651** | 520-570 | 450-500 | 10-14 | 140-150 | --- #### **4. International Standards** Aluminum 7025 complies with the following international standards: * **EN:** **EN AW-7025** (3.4333) * **ASTM:** **ASTM B209**, **ASTM B247** * **ISO:** **AlZn6MgCu** under ISO 209 * **AMS:** **AMS 4116** (Aerospace Material Specification) * **UNS:** **A97025** * **MIL:** **MIL-A-22771** --- #### **5. Product Applications** Aluminum 7025 is used in demanding high-performance applications: * **Aerospace Structures:** Aircraft wing components, fuselage frames * **Military Equipment:** Defense system components, military vehicles * **Space Applications:** Satellite structures, space vehicle components * **High-Performance Automotive:** Racing chassis, suspension systems * **Marine Defense:** Naval vessel components, marine structures * **Industrial Machinery:** High-stress machinery components * **Sports Equipment:** Professional competition equipment * **Transportation:** High-strength vehicle components --- #### **6. Key Advantages & Characteristics** * **High Strength-to-Weight Ratio:** Excellent mechanical properties with low density * **Superior Fatigue Performance:** Outstanding resistance to cyclic loading * **Good Corrosion Resistance:** Enhanced environmental durability * **Excellent Toughness:** Balanced combination of strength and fracture resistance * **Heat Treatable:** Excellent response to artificial aging treatments * **Good Machinability:** Suitable for precision manufacturing operations * **Weldability:** Can be welded using specialized techniques * **Thermal Stability:** Maintains properties at moderate temperatures **Heat Treatment Characteristics:** - Solution treatment temperature: 465-475°C (870-885°F) - Artificial aging temperature: 120-140°C (250-285°F) - Good response to T7-type overaging treatments - Stable mechanical properties after proper aging **Corrosion Performance:** - Good stress corrosion cracking resistance - Adequate general corrosion resistance - Suitable for aerospace and industrial environments - Can be enhanced with protective coatings **Manufacturing Characteristics:** - Good forgeability and extrudability - Suitable for complex structural shapes - Can be machined using conventional methods - Weldable using appropriate procedures --- **Quality Assurance:** - Strict chemical composition control - Comprehensive mechanical testing - Non-destructive testing capabilities - Full material traceability - Certification to international standards **Processing Recommendations:** - Use carbide tooling for machining operations - Follow recommended heat treatment cycles - Implement proper quality control measures - Use appropriate welding techniques - Maintain clean processing environment --- **Conclusion:** Aluminum 7025 represents a well-balanced high-strength aluminum alloy that offers an excellent combination of mechanical properties, fatigue performance, and manufacturing characteristics. Its optimized composition and heat treatment response make it particularly valuable for aerospace, defense, and high-performance applications where reliability and structural efficiency are critical. The alloy's ability to deliver consistent performance under demanding conditions, combined with its good processing characteristics, establishes it as a reliable choice for engineers and designers working on advanced structural applications. For projects requiring high strength with good overall performance characteristics, Aluminum 7025 provides an excellent balance of properties and processing capabilities.

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 2121 gallon liquid totes Special package is available on request.