7012 Aluminum alloy,Aluminum 7012 alloy，E FORU

### **Aluminum 7012 Alloy (EN AW-7012) - Product Introduction** **Aluminum 7012** is a high-strength, heat-treatable aluminum-zinc-magnesium-copper alloy specifically designed for applications requiring excellent strength, good toughness, and superior fatigue performance. As an advanced member of the 7xxx series aluminum alloys, it offers an optimal balance of mechanical properties and manufacturing characteristics, making it suitable for demanding aerospace and transportation applications. --- #### **1. Chemical Composition** The chemical composition is carefully balanced for high strength and good corrosion resistance: | Element | Content (%) (Typical) | Standard Range | |---|---|---| | **Aluminum (Al)** | Balance | Balance | | **Zinc (Zn)** | 5.5 - 6.5 | 5.5 - 6.5 | | **Magnesium (Mg)** | 2.0 - 2.8 | 2.0 - 2.8 | | **Copper (Cu)** | 0.8 - 1.5 | 0.8 - 1.5 | | **Zirconium (Zr)** | 0.08 - 0.15 | 0.08 - 0.15 | | **Manganese (Mn)** | 0.05 - 0.15 | 0.05 - 0.15 | | **Chromium (Cr)** | 0.04 - 0.12 | 0.04 - 0.12 | | **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 7012 exhibits excellent physical properties for structural 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** | 142-157 W/m·K | 985-1090 BTU·in/(hr·ft²·°F) | | **Coefficient of Thermal Expansion** | 23.7 × 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** | 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 7012 complies with the following international standards: * **AMS:** **AMS 4108** (Aerospace Material Specification) * **ASTM:** **ASTM B247**, **ASTM B209** * **EN:** **EN AW-7012** (3.4346) * **ISO:** **AlZn6MgCu** under ISO 209 * **UNS:** **A97012** * **MIL:** **MIL-A-22771** --- #### **5. Product Applications** Aluminum 7012 is used in high-performance applications requiring reliability: * **Aerospace Structures:** Aircraft fuselage frames, wing ribs * **Military Applications:** Military vehicle components, defense systems * **Transportation:** Railway vehicle structures, truck frames * **Automotive Racing:** High-performance vehicle chassis components * **Marine Applications:** Boat structures, marine hardware * **Industrial Machinery:** High-stress machinery components * **Sports Equipment:** Competition bicycle frames, high-end sports gear * **Structural Components:** Critical load-bearing structures --- #### **6. Key Advantages & Characteristics** * **High Strength Properties:** Excellent mechanical strength with good toughness * **Superior Fatigue Performance:** Outstanding resistance to cyclic loading * **Good Stress Corrosion Resistance:** Balanced SCC resistance for high-strength applications * **Excellent Fracture Toughness:** Good damage tolerance characteristics * **Heat Treatable:** Excellent response to artificial aging treatments * **Good Machinability:** Suitable for precision machining operations * **Weight Efficiency:** 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 range: 120-140°C (250-285°F) - Good response to T7-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 transportation environments - Can be enhanced with protective coatings **Manufacturing Characteristics:** - Good extrudability and forgeability - 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 aerospace standards **Processing Recommendations:** - Use carbide tooling for machining operations - Follow recommended heat treatment cycles - Implement proper quality control measures - Use appropriate welding techniques and filler materials --- **Conclusion:** Aluminum 7012 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, transportation, 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 7012 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 2107 gallon liquid totes Special package is available on request.