6151-T6 Aluminum alloy,Aluminum 6151-T6 alloy,E FORU

### **Aluminum 6151-T6 Alloy: Product Introduction** **Overview** Aluminum 6151-T6 is a high-strength aluminum-magnesium-silicon alloy supplied in the solution heat-treated and artificially aged condition. This temper represents the **peak strength condition** for the 6151 alloy system, offering **exceptional mechanical properties** combined with **excellent stress corrosion resistance**. The T6 treatment provides the **maximum practical strength** for this alloy, making it particularly suitable for high-stress applications in aerospace, automotive, and structural components where both strength and corrosion resistance are critical. --- #### **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** | 42-46% IACS | 42-46% IACS | | **Thermal Conductivity** | 160-175 W/m·K | 930-1015 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-T6:** | Property | Metric Value | Imperial Value | |----------|--------------|----------------| | **Tensile Strength** | 330-360 MPa | 48-52 ksi | | **Yield Strength (0.2% Offset)** | 295-325 MPa | 43-47 ksi | | **Elongation (in 50mm)** | 12-16% | 12-16% | | **Hardness (Brinell)** | 95-105 HB | 95-105 HB | | **Shear Strength** | 205-225 MPa | 30-33 ksi | | **Fatigue Strength** | 125-145 MPa | 18-21 ksi | | **Compressive Yield Strength** | 295-325 MPa | 43-47 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** **Aerospace and Defense:** - Aircraft structural forgings - Wing attachment fittings - Landing gear components - Missile and defense system parts **Automotive Industry:** - High-stress suspension components - Steering system forgings - Engine mounting brackets - Chassis structural members **Industrial Equipment:** - High-pressure valve bodies - Pump components - Machinery structural forgings - Heavy equipment components **Special Applications:** - Nuclear component supports - Chemical processing equipment - Marine hardware - High-reliability structural components --- #### **6. Key Characteristics & Advantages** * **High Strength-to-Weight Ratio:** Excellent mechanical properties with lightweight characteristics * **Superior Stress Corrosion Resistance:** Excellent performance in corrosive environments under stress * **Good Fatigue Performance:** Reliable performance under cyclic loading conditions * **Excellent Forging Characteristics:** Superior hot workability and die filling capability * **Good Weldability:** Can be welded using proper procedures and techniques * **Adequate Machinability:** Can be machined to precise tolerances with appropriate techniques * **Excellent Thermal Stability:** Maintains properties at moderate temperatures --- #### **7. Heat Treatment Process** **Solution Heat Treatment:** - Temperature: 525-535°C (977-995°F) - Time: 30-60 minutes depending on thickness - Quenching: Rapid water quenching **Artificial Aging Process:** - Temperature: 155-165°C (311-329°F) - Time: 8-12 hours - Cooling: Air cooling to room temperature --- #### **8. Processing and Fabrication** **Machining Characteristics:** - Good machinability with carbide tooling - Requires appropriate cutting parameters - Good surface finish achievable - Suitable for precision machining operations **Forming Limitations:** - Limited formability in T6 condition - Suitable only for minor straightening operations - Specialized equipment required for any forming - High springback characteristics **Joining Methods:** - Weldable using TIG and MIG methods - Requires qualified welding procedures - Post-weld heat treatment recommended for critical applications - Mechanical fastening preferred **Surface Treatment Compatibility:** - Good for anodizing applications - Suitable for chemical conversion coatings - Can be painted or powder coated - Maintains corrosion resistance with proper treatment --- #### **9. Quality Assurance** **Testing Requirements:** - Comprehensive mechanical property testing - Chemical composition analysis - Stress corrosion testing - Microstructural examination - Non-destructive testing for critical applications **Certification:** - Mill test certificates per international standards - Process control documentation - Full traceability records - Third-party inspection available --- **Technical Note:** Aluminum 6151-T6 represents one of the highest strength variants in the 6xxx series aluminum alloys with enhanced stress corrosion resistance. The combination of chromium and magnesium in the chemical composition provides improved resistance to stress corrosion cracking compared to other high-strength aluminum alloys. This makes 6151-T6 particularly valuable for applications in aerospace, automotive, and industrial sectors where components are subjected to both high mechanical stresses and corrosive environments. While the alloy offers limited formability in the T6 condition, its superior strength characteristics and excellent corrosion resistance make it an ideal choice for critical structural components where reliability and long-term performance are paramount considerations.

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 2049 gallon liquid totes Special package is available on request.