7093 Aluminum alloy,Aluminum 7093 alloy，E FORU

### **7093 Aluminum Alloy: Advanced High-Strength Powder Metallurgy Alloy** **7093 Aluminum Alloy** is an advanced high-strength aluminum-zinc-magnesium-copper alloy produced via powder metallurgy (PM) processing. Developed as part of the third generation of PM aluminum alloys, 7093 offers an exceptional combination of ultra-high strength, good fracture toughness, and improved stress corrosion cracking resistance compared to conventional wrought aluminum alloys. --- #### **1. Chemical Composition** | Element | Content (%) (Typical) | Role in the Alloy | | :--- | :--- | :--- | | **Zinc (Zn)** | 8.5 - 10.0 | Primary strengthening element through formation of MgZn₂ precipitates | | **Magnesium (Mg)** | 2.0 - 3.0 | Enhances strength and age-hardening response | | **Copper (Cu)** | 0.8 - 1.4 | Improves strength and stress corrosion cracking resistance | | **Cobalt (Co)** | 0.8 - 1.4 | Forms fine Co-containing dispersoids for microstructural control | | **Zirconium (Zr)** | 0.08 - 0.15 | Additional grain structure control and recrystallization inhibition | | **Iron (Fe)** | ≤ 0.15 | Tightly controlled impurity | | **Silicon (Si)** | ≤ 0.12 | Tightly controlled impurity | | **Oxygen (O)** | ≤ 0.20 | Controlled from powder processing | | **Other Elements** | ≤ 0.05 each; ≤ 0.15 total | - | | **Aluminum (Al)** | Balance | Base metal | --- #### **2. Manufacturing Process** **Powder Metallurgy Manufacturing Route:** - **Gas Atomization:** Produces spherical alloy powder with fine microstructure - **Sieving and Blending:** Ensures powder size distribution and homogeneity - **Canning and Degassing:** Removes moisture and contaminants under vacuum - **Hot Consolidation:** Hot isostatic pressing (HIP) or extrusion - **Thermomechanical Processing:** Forging, rolling, or extrusion to final shape - **Heat Treatment:** Solution treatment and aging --- #### **3. Physical Properties** | Property | Value / Description | | :--- | :--- | | **Density** | 2.83 g/cm³ (0.102 lb/in³) | | **Melting Range** | 475°C - 635°C (887°F - 1175°F) | | **Electrical Conductivity** | 34-38% IACS | | **Thermal Conductivity** | 110-130 W/m·K | | **Coefficient of Thermal Expansion** | 23.4 × 10⁻⁶/°C (20-100°C) | | **Modulus of Elasticity** | 72 GPa (10.4 × 10⁶ psi) | --- #### **4. Mechanical Properties (Typical for T7-type Temper)** | Property | Typical Value | | :--- | :--- | | **Tensile Ultimate Strength** | 650 - 720 MPa (94 - 104 ksi) | | **Tensile Yield Strength (0.2% Offset)** | 610 - 680 MPa (88 - 99 ksi) | | **Elongation** | 5-9% | | **Compression Yield Strength** | 600 - 670 MPa (87 - 97 ksi) | | **Shear Strength** | 370 - 410 MPa (54 - 59 ksi) | | **Fatigue Strength** | 200 - 230 MPa (29 - 33 ksi) | | **Fracture Toughness (K1C)** | 24-30 MPa·√m | --- #### **5. Product Applications** **7093 Aluminum Alloy** is used in the most demanding applications: * **Aerospace and Defense:** * Aircraft landing gear components * Missile structural components * Rocket motor cases * Military aircraft critical structures * Armor components * **Space Applications:** * Space launch vehicle structures * Satellite components * Spacecraft structural members * **High-Performance Applications:** * Racing vehicle suspension components * High-stress automotive parts * Specialized industrial components * **Marine Defense:** * Naval vessel components * Underwater vehicle structures --- #### **6. International Standards** | Standard Body | Designation | Specification | | :--- | :--- | :--- | | **Aluminum Association** | 7093 | AA Teal Sheets | | **ASTM International** | 7093 | ASTM B595 | | **Aerospace (AMS)** | - | Under development | | **Military Standards** | Various | Material specifications | --- #### **7. Key Characteristics** **Advantages:** - **Ultra-high strength** capability - **Excellent strength-to-weight ratio** - **Good fracture toughness** for strength level - **Improved stress corrosion cracking resistance** - **Fine, homogeneous microstructure** - **Enhanced fatigue performance** - **Superior thermal stability** **Limitations:** - **High manufacturing cost** - **Limited product size availability** - **Complex processing requirements** - **Challenging machining characteristics** - **Limited industry database and experience** --- #### **8. Manufacturing Considerations** * **Machining:** Requires carbide tooling and specialized techniques * **Forming:** Limited to near-net shape manufacturing approaches * **Joining:** Requires electron beam or friction stir welding * **Heat Treatment:** Critical control of solution treatment and aging parameters * **Quality Assurance:** Extensive non-destructive testing essential --- #### **9. Special Features** **7093 Aluminum Alloy** offers unique advantages: * **Microstructural Control:** Fine, uniform microstructure from rapid solidification * **Alloy Design Flexibility:** Ability to incorporate novel alloying elements * **Property Combinations:** Superior balance of strength and toughness * **Advanced Manufacturing:** Leverages powder metallurgy advantages **Comparison with Conventional Alloys:** - 20-25% higher strength than 7075-T6 - Better stress corrosion cracking resistance - Improved damage tolerance - More isotropic properties --- #### **10. Technical Development** * **Processing Optimization:** Continuous improvement in PM processing * **Cost Reduction Efforts:** Developing more economical production methods * **Application Qualification:** Ongoing testing and qualification programs * **Standardization Progress:** Working toward industry-wide specifications **7093 Aluminum Alloy** represents the forefront of aluminum alloy technology, demonstrating the significant performance advantages achievable through powder metallurgy processing. While currently serving niche applications due to cost and manufacturing complexity, this alloy showcases the potential for next-generation aluminum materials in the most demanding aerospace, defense, and high-performance applications. The continued development and qualification of 7093 and similar PM aluminum alloys is expected to expand their application range as manufacturing costs decrease and industry experience grows.

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 2176 gallon liquid totes Special package is available on request.