7136 Aluminum alloy,Aluminum 7136 alloy，E FORU

### **7136 Aluminum Alloy: High-Strength Automotive Alloy** **7136 Aluminum Alloy** is a heat-treatable aluminum-zinc-magnesium alloy specifically engineered for automotive body sheet applications requiring high strength and excellent formability. This alloy offers an optimal balance between mechanical properties and manufacturing characteristics, making it ideal for structural automotive components where weight reduction and crash performance are paramount. --- #### **1. Chemical Composition** | Element | Content (%) (Typical) | Role in the Alloy | | :--- | :--- | :--- | | **Zinc (Zn)** | 5.5 - 6.5 | Primary strengthening element through formation of MgZn₂ precipitates | | **Magnesium (Mg)** | 1.8 - 2.5 | Enhances strength and age-hardening response | | **Copper (Cu)** | 0.40 - 0.9 | Improves strength and stress corrosion resistance | | **Iron (Fe)** | ≤ 0.15 | Tightly controlled impurity for improved consistency | | **Silicon (Si)** | ≤ 0.12 | Tightly controlled impurity for improved ductility | | **Manganese (Mn)** | 0.05 - 0.20 | Grain structure control | | **Chromium (Cr)** | 0.10 - 0.25 | Enhances corrosion resistance and grain structure | | **Zirconium (Zr)** | 0.08 - 0.16 | Grain refiner and recrystallization inhibitor | | **Titanium (Ti)** | ≤ 0.10 | Grain refiner | | **Other Elements** | ≤ 0.05 each; ≤ 0.15 total | - | | **Aluminum (Al)** | Balance | Base metal | --- #### **2. Physical Properties** | Property | Value / Description | | :--- | :--- | | **Density** | 2.80 g/cm³ (0.101 lb/in³) | | **Melting Range** | 550°C - 640°C (1022°F - 1184°F) | | **Electrical Conductivity** | 37-41% IACS | | **Thermal Conductivity** | 140-155 W/m·K | | **Coefficient of Thermal Expansion** | 23.6 × 10⁻⁶/°C (20-100°C) | | **Modulus of Elasticity** | 70.5 GPa (10.2 × 10⁶ psi) | --- #### **3. Mechanical Properties (Typical for T6 Temper)** | Property | Typical Value | | :--- | :--- | | **Tensile Ultimate Strength** | 440 - 500 MPa (64 - 73 ksi) | | **Tensile Yield Strength (0.2% Offset)** | 390 - 450 MPa (57 - 65 ksi) | | **Elongation** | 10-14% | | **Compression Yield Strength** | 380 - 440 MPa (55 - 64 ksi) | | **Shear Strength** | 250 - 290 MPa (36 - 42 ksi) | | **Fatigue Strength** | 150 - 180 MPa (22 - 26 ksi) | | **Brinell Hardness** | 120 - 140 HB | --- #### **4. Product Applications** **7136 Aluminum Alloy** is primarily used in automotive structural applications: * **Automotive Structural Components:** * Bumper reinforcement beams * Door intrusion beams * Crash management systems * Seat frames and brackets * Chassis components * **Body-in-White Applications:** * Pillar reinforcements * Roof rails * Floor cross members * Body structural members * **Transportation Applications:** * Truck frame components * Bus structural members * Railway vehicle structures * **Industrial Applications:** * High-strength structural components * Machinery parts * Material handling equipment --- #### **5. International Standards** | Standard Body | Designation | Specification | | :--- | :--- | :--- | | **Aluminum Association** | 7136 | AA Teal Sheets | | **ASTM International** | 7136 | ASTM B209 | | **European Norm** | EN AW-7136 | EN 485-2 | | **Japanese Standards** | A7136 | JIS H 4000 | | **Unified Numbering System** | A97136 | UNS Registry | --- #### **6. Key Characteristics** **Advantages:** * **High strength-to-weight ratio** * **Excellent energy absorption** characteristics * **Good formability** in T4 temper condition * **Superior crash performance** * **Good weldability** * **Excellent fatigue resistance** * **Cost-effective** for automotive applications **Limitations:** * Requires controlled heat treatment processes * Limited to sheet and plate product forms * Not suitable for high-temperature applications * Requires corrosion protection in severe environments --- #### **7. Manufacturing Considerations** * **Stamping:** Good formability in solution-treated (T4) condition * **Welding:** Excellent spot weldability and MIG welding compatibility * **Heat Treatment:** Strong response to paint bake hardening * **Joining:** Suitable for mechanical fastening and adhesive bonding * **Surface Treatment:** Good for painting and coating processes --- #### **8. Special Features** **7136 Aluminum Alloy** offers specific advantages for automotive applications: * **Crash Energy Management:** Excellent energy absorption capabilities * **Weight Reduction:** Significant mass savings over steel components * **Manufacturing Compatibility:** Suitable for high-volume automotive production * **Property Consistency:** Reliable and consistent mechanical properties **Automotive Manufacturing Advantages:** - Compatible with existing stamping and assembly lines - Excellent spot weldability characteristics - Good paint adhesion and surface quality - Predictable springback behavior during forming --- #### **9. Performance Characteristics** * **Crash Performance:** Superior energy absorption in impact scenarios * **Fatigue Life:** Excellent durability for automotive structural applications * **Corrosion Resistance:** Adequate performance with proper surface protection * **Durability:** Good long-term performance in automotive environments **7136 Aluminum Alloy** represents a significant advancement in automotive aluminum technology, specifically engineered to meet the demanding requirements of modern vehicle safety and lightweighting initiatives. The alloy's unique combination of high strength, excellent energy absorption characteristics, and good manufacturability makes it particularly valuable for automotive safety-critical components where crash performance and weight reduction are paramount considerations. The continued adoption of 7136 demonstrates the automotive industry's commitment to improved vehicle safety, fuel efficiency, and environmental performance through advanced materials engineering and lightweight design strategies.

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 2184 gallon liquid totes Special package is available on request.