7001-T6; 7001-T651 Aluminum alloy,Aluminum 7001-T6; 7001-T651 alloy，E FORU

### **Aluminum 7001-T6 / 7001-T651 Alloy (UNS A97001) - Product Introduction** **Aluminum 7001-T6/T651** represents the peak strength condition of the ultra-high strength 7001 aluminum-zinc-magnesium-copper alloy. The T6 temper indicates solution heat treatment followed by artificial aging to achieve maximum strength, while the T651 temper includes additional stress-relieving by stretching for improved dimensional stability. This alloy offers the highest mechanical properties among commercial aluminum alloys. --- #### **1. Chemical Composition** The chemical composition is optimized for maximum age-hardening response: | Element | Content (%) (Typical) | Standard Range | |---|---|---| | **Aluminum (Al)** | Balance | Balance | | **Zinc (Zn)** | 6.8 - 8.0 | 6.8 - 8.0 | | **Magnesium (Mg)** | 2.5 - 3.3 | 2.5 - 3.3 | | **Copper (Cu)** | 1.5 - 2.3 | 1.5 - 2.3 | | **Chromium (Cr)** | 0.06 - 0.16 | 0.06 - 0.16 | | **Zirconium (Zr)** | 0.08 - 0.15 | 0.08 - 0.15 | | **Iron (Fe)** | ≤ 0.20 | ≤ 0.20 | | **Silicon (Si)** | ≤ 0.15 | ≤ 0.15 | | **Manganese (Mn)** | ≤ 0.05 | ≤ 0.05 | | **Titanium (Ti)** | ≤ 0.05 | ≤ 0.05 | | **Others (Each)** | ≤ 0.05 | ≤ 0.05 | | **Others (Total)** | ≤ 0.15 | ≤ 0.15 | --- #### **2. Physical Properties** Aluminum 7001-T6/T651 exhibits high-density characteristics: | Property | Metric Value | Imperial Value | |---|---|---| | **Density** | 2.82 g/cm³ | 0.102 lb/in³ | | **Melting Range** | 475 - 635 °C | 887 - 1175 °F | | **Electrical Conductivity** | 38-42 % IACS | 38-42 % 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** **7001-T6/T651 Mechanical Properties:** | Property | Metric Value | Imperial Value | |---|---|---| | **Tensile Strength, Ultimate** | 700-760 MPa | 101,500-110,200 psi | | **Tensile Strength, Yield (0.2%)** | 630-690 MPa | 91,400-100,000 psi | | **Elongation in 50mm** | 8-12% | 8-12% | | **Hardness (Brinell)** | 145-155 HB | 145-155 HB | | **Shear Strength** | 410 MPa | 59,500 psi | | **Fatigue Strength** | 190 MPa | 27,600 psi | | **Fracture Toughness** | 28-32 MPa·√m | 25-29 ksi·√in | --- #### **4. International Standards** Aluminum 7001-T6/T651 conforms to these international standards: * **ASTM:** **ASTM B247** for Aluminum-Alloy Die Forgings * **AMS:** **AMS 4332** (Aerospace Material Specification) * **UNS:** **A97001** * **ISO:** **AlZn8MgCu** under ISO 209 * **EN:** **EN AW-7001** (European Standard Equivalent) * **MIL:** **MIL-A-22771** (Military Specification) --- #### **5. Product Applications** Aluminum 7001-T6/T651 is used in the most demanding applications: * **Aerospace Structures:** Aircraft landing gear components, wing spars * **Military Equipment:** Armor plating, missile components, military hardware * **High-Performance Sporting Goods:** Bicycle frames, baseball bats, climbing equipment * **Racing Components:** Automotive racing suspension parts, chassis components * **Defense Systems:** Rocket motor cases, military vehicle components * **Critical Structural Components:** High-stress structural applications * **Precision Forgings:** High-strength forged components --- #### **6. Key Advantages & Characteristics** * **Ultra-High Strength:** Highest strength among commercial aluminum alloys * **Excellent Strength-to-Weight Ratio:** Superior mechanical properties * **Good Fatigue Resistance:** Excellent performance under cyclic loading * **High Fracture Toughness:** Good damage tolerance characteristics * **Age-Hardening Capability:** Exceptional response to heat treatment * **Machinability:** Good machining characteristics in aged condition **Heat Treatment Process:** - Solution Treatment: 465-475°C (870-885°F) for 1-2 hours - Rapid quenching in water or polymer - Artificial Aging: 120-135°C (250-275°F) for 24-48 hours - Stress Relieving (T651): 1.5-3% permanent set by stretching **T6 vs T651 Characteristics:** - **T6:** Maximum strength, may contain residual stresses - **T651:** Slightly lower strength, improved dimensional stability - **T651:** Better for precision machining applications - **T651:** Reduced distortion during and after machining **Performance Characteristics:** - Superior strength compared to 7075-T6 - Good stress corrosion cracking resistance - Excellent cryogenic properties - Maintains strength at elevated temperatures --- **Processing Recommendations:** - Use carbide tooling for machining operations - Handle with care to prevent surface damage - Store in controlled environments to prevent corrosion - Follow strict heat treatment procedures - Use proper safety equipment when machining **Limitations and Considerations:** - Lower corrosion resistance than other aerospace alloys - Requires proper aging for optimal properties - Limited formability in T6 condition - Higher cost than other high-strength alloys --- **Conclusion:** Aluminum 7001-T6/T651 represents the pinnacle of aluminum alloy strength technology, offering unmatched mechanical properties for the most demanding aerospace, military, and high-performance applications. Its exceptional strength-to-weight ratio and superior mechanical characteristics make it the material of choice where maximum performance is required. While requiring careful processing and having some limitations in corrosion resistance, 7001-T6/T651 delivers unparalleled performance that justifies its use in critical applications where failure is not an option.

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 2096 gallon liquid totes Special package is available on request.