6151-T4 Aluminum alloy,Aluminum 6151-T4 alloy,E FORU

### **Aluminum 6151-T4 Alloy: Product Introduction** **Overview** Aluminum 6151-T4 is a heat-treatable aluminum-magnesium-silicon alloy in the solution heat-treated and naturally aged condition. This temper provides an excellent balance between **good strength and excellent formability**, offering **enhanced mechanical properties** while maintaining adequate ductility for subsequent forming operations. The T4 condition represents an optimal intermediate state for forged and formed components that require fabrication after heat treatment before reaching their final strength through artificial aging. --- #### **1. Chemical Composition (Weight %)** | Element | Minimum (%) | Maximum (%) | |---------|-------------|-------------| | Silicon (Si) | 0.6 | 1.2 | | Iron (Fe) | - | 1.0 | | Copper (Cu) | - | 0.35 | | Manganese (Mn) | - | 0.20 | | Magnesium (Mg) | 0.45 | 0.8 | | Chromium (Cr) | 0.15 | 0.35 | | Zinc (Zn) | - | 0.25 | | Titanium (Ti) | - | 0.15 | | Other (Each) | - | 0.05 | | Other (Total) | - | 0.15 | | **Aluminum (Al)** | **Balance** | | --- #### **2. Physical Properties** | Property | Metric Value | Imperial Value | |----------|--------------|----------------| | **Density** | 2.70 g/cm³ | 0.0975 lb/in³ | | **Melting Range** | 580-650 °C | 1076-1202 °F | | **Electrical Conductivity** | 44-48% IACS | 44-48% IACS | | **Thermal Conductivity** | 170-185 W/m·K | 985-1070 BTU·in/(hr·ft²·°F) | | **Coefficient of Thermal Expansion** | 23.6 × 10⁻⁶/°C | 13.1 × 10⁻⁶/°F | | **Modulus of Elasticity** | 68.9 GPa | 10,000 ksi | --- #### **3. Mechanical Properties** **Typical Mechanical Properties for 6151-T4:** | Property | Metric Value | Imperial Value | |----------|--------------|----------------| | **Tensile Strength** | 230-270 MPa | 33-39 ksi | | **Yield Strength (0.2% Offset)** | 125-155 MPa | 18-22 ksi | | **Elongation (in 50mm)** | 18-22% | 18-22% | | **Hardness (Brinell)** | 70-80 HB | 70-80 HB | | **Shear Strength** | 150-180 MPa | 22-26 ksi | | **Fatigue Strength** | 95-115 MPa | 14-17 ksi | --- #### **4. International Standards** * **ASTM Standards:** * ASTM B221: Standard Specification for Aluminum and Aluminum-Alloy Extruded Bars, Rods, Wire, Profiles, and Tubes * ASTM B211: Standard Specification for Aluminum and Aluminum-Alloy Bar, Rod, and Wire * ASTM B247: Standard Specification for Aluminum and Aluminum-Alloy Die Forgings, Hand Forgings, and Rolled Ring Forgings * **European Standards (EN):** * EN 573-3: Chemical composition * EN 755-2: Mechanical properties for extruded products * EN 586-2: Forgings - Mechanical properties * **ISO Standards:** * ISO 6361-2: Wrought aluminum and aluminum alloy sheets, strips and plates * ISO 6362-2: Wrought aluminum and aluminum alloy extruded rods/bars, tubes and profiles --- #### **5. Product Applications** **Forging Applications:** - Aircraft forgings - Automotive forged components - Machinery forged parts - Structural forgings **Aerospace Components:** - Aircraft structural elements - Wing and fuselage components - Aerospace brackets and fittings - Landing gear components **Automotive Industry:** - Automotive suspension parts - Chassis components - Steering system parts - Engine mounting brackets **Industrial Equipment:** - Machinery frames and supports - High-stress mechanical components - Equipment structural members - Heavy-duty industrial parts --- #### **6. Key Characteristics & Advantages** * **Good Strength-to-Weight Ratio:** Enhanced mechanical properties with lightweight characteristics * **Excellent Formability:** Maintains good ductility for forming operations after solution treatment * **Age-Hardenable:** Can be artificially aged to T6 temper for maximum strength * **Excellent Corrosion Resistance:** Particularly good stress corrosion resistance * **Superior Forging Characteristics:** Excellent hot workability and die filling capability * **Good Weldability:** All common welding methods can be successfully employed * **Good Machinability:** Can be machined using standard techniques --- #### **7. Heat Treatment and Aging Characteristics** **Solution Heat Treatment:** - Temperature: 525-535°C (977-995°F) - Time: 30-60 minutes depending on thickness - Quenching: Rapid water quenching **Natural Aging:** - Occurs at room temperature - Reaches substantial stability in 4-10 days - Provides stable mechanical properties for fabrication **Artificial Aging Potential (to T6):** - Temperature: 155-165°C (311-329°F) - Time: 8-12 hours - Final Strength: 330-360 MPa tensile strength --- #### **8. Processing and Fabrication** **Forging Characteristics:** - Excellent hot workability - Good for closed die forging - Suitable for precision forging - Consistent mechanical properties **Forming Characteristics:** - Good for bending and moderate forming operations - Suitable for stretch forming applications - Adequate for roll forming processes - Moderate springback characteristics **Machining Properties:** - Good machinability in T4 condition - Better chip control than annealed temper - Good surface finish achievable - Suitable for precision machining operations **Joining Methods:** - Excellent weldability using TIG and MIG methods - Good for resistance welding applications - Suitable for adhesive bonding - Mechanical fastening easily accomplished --- #### **9. Quality Assurance** **Testing and Verification:** - Mechanical property testing - Chemical composition analysis - Microstructural examination - Non-destructive testing for critical applications **Certification:** - Mill test certificates per international standards - Process control documentation - Traceability records - Compliance with aerospace and automotive specifications --- **Technical Note:** Aluminum 6151-T4 offers a superior combination of strength and formability, particularly suited for forged components and structural applications requiring post-heat treatment fabrication. The natural aging process provides stable mechanical properties that are sufficient for most manufacturing operations while allowing for subsequent artificial aging to achieve maximum strength. This temper is especially valuable for aerospace and automotive applications where components must be formed or forged after solution heat treatment, with the final strength properties developed through controlled aging processes. The enhanced chromium content in 6151 provides improved stress corrosion resistance compared to other 6xxx series alloys, making it particularly suitable for applications where both high strength and corrosion resistance are critical requirements.

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 2048 gallon liquid totes Special package is available on request.