6951-T6 Aluminum alloy,Aluminum 6951-T6 alloy，E FORU

### **Aluminum 6951-T6 Alloy (EN AW-6951) - Product Introduction** **Aluminum 6951-T6** is a heat-treatable aluminum-magnesium-silicon alloy that has been solution heat-treated and artificially aged to achieve optimal mechanical properties. This temper provides high strength combined with good electrical conductivity, making it particularly suitable for electrical and structural applications where both mechanical performance and electrical characteristics are important. --- #### **1. Chemical Composition** The chemical composition is balanced for optimal strength and electrical properties: | Element | Content (%) (Typical) | Standard Range (ASTM/EN) | |---|---|---| | **Aluminum (Al)** | Balance | Balance | | **Magnesium (Mg)** | 0.50 - 0.8 | 0.50 - 0.8 | | **Silicon (Si)** | 0.25 - 0.6 | 0.25 - 0.6 | | **Iron (Fe)** | ≤ 0.25 | ≤ 0.25 | | **Copper (Cu)** | 0.10 - 0.30 | 0.10 - 0.30 | | **Manganese (Mn)** | ≤ 0.10 | ≤ 0.10 | | **Chromium (Cr)** | ≤ 0.10 | ≤ 0.10 | | **Zinc (Zn)** | ≤ 0.10 | ≤ 0.10 | | **Titanium (Ti)** | ≤ 0.05 | ≤ 0.05 | | **Others (Each)** | ≤ 0.05 | ≤ 0.05 | | **Others (Total)** | ≤ 0.15 | ≤ 0.15 | --- #### **2. Physical Properties** Aluminum 6951-T6 exhibits excellent physical properties for electrical applications: | Property | Metric Value | Imperial Value | |---|---|---| | **Density** | 2.70 g/cm³ | 0.0975 lb/in³ | | **Melting Range** | 610 - 650 °C | 1130 - 1202 °F | | **Electrical Conductivity** | 50-54 % IACS | 50-54 % IACS | | **Thermal Conductivity** | 180-195 W/m·K | 1250-1355 BTU·in/(hr·ft²·°F) | | **Coefficient of Thermal Expansion** | 23.4 × 10⁻⁶/K | 13.0 × 10⁻⁶/°F | | **Modulus of Elasticity** | 69 GPa | 10,000 ksi | | **Shear Modulus** | 26 GPa | 3,770 ksi | --- #### **3. Mechanical Properties** **Typical Mechanical Properties (T6 Temper):** | Property | Metric Value | Imperial Value | |---|---|---| | **Tensile Strength, Ultimate** | 240-280 MPa | 34,800-40,600 psi | | **Tensile Strength, Yield (0.2%)** | 210-250 MPa | 30,500-36,300 psi | | **Elongation in 50mm** | 10-14% | 10-14% | | **Hardness (Brinell)** | 75-85 HB | 75-85 HB | | **Shear Strength** | 150 MPa | 21,800 psi | | **Fatigue Strength** | 85 MPa | 12,300 psi | | **Poisson's Ratio** | 0.33 | 0.33 | --- #### **4. International Standards** Aluminum 6951-T6 conforms to these international standards: * **ASTM:** **ASTM B221** for Aluminum-Alloy Extruded Bars, Rods, Wire, Profiles, and Tubes * **EN:** **EN AW-6951** (European Standard Equivalent) * **ISO:** **AlMgSi** under ISO 209 * **AMS:** **AMS 4115** (Aerospace Material Specification) * **SAE:** **SAE J454** (Society of Automotive Engineers) * **IEC:** **IEC 60104** for electrical conductor applications --- #### **5. Product Applications** Aluminum 6951-T6 is widely used in applications requiring both strength and electrical performance: * **Electrical Conductors:** Bus bars, electrical transmission components * **Heat Exchangers:** Fins, tubes, and heat transfer components * **Structural Components:** Building structures, framework elements * **Automotive Parts:** Structural components, electrical systems * **Marine Applications:** Boat structures, marine electrical systems * **Industrial Equipment:** Machinery components, electrical enclosures * **Aerospace Components:** Non-critical aircraft structural parts * **Electronic Heat Sinks:** Thermal management components --- #### **6. Key Advantages & Characteristics** * **High Strength:** Excellent mechanical properties for structural applications * **Good Electrical Conductivity:** Superior electrical performance for conductor applications * **Thermal Conductivity:** Good heat dissipation characteristics * **Corrosion Resistance:** Good resistance to atmospheric corrosion * **Weldability:** Can be welded using standard aluminum welding methods * **Machinability:** Good machining characteristics in aged condition * **Formability:** Suitable for moderate forming operations * **Fatigue Resistance:** Good performance under cyclic loading conditions **Heat Treatment Process:** - Solution Treatment: 520-540°C (970-1005°F) for 20-60 minutes - Rapid quenching in water - Artificial Aging: 160-180°C (320-355°F) for 6-10 hours - Air cooling to room temperature **Electrical Performance:** - High electrical conductivity for structural aluminum alloy - Suitable for power transmission applications - Good current-carrying capacity - Low electrical losses **Fabrication Characteristics:** - **Bendability:** Moderate - requires appropriate bend radii - **Minimum Bend Radius:** 2-3T (depending on thickness) - **Machining:** Use sharp carbide tools with positive rake angles - **Welding:** GTAW and GMAW with 4043 or 5356 filler wire - **Surface Finish:** Good for various surface treatments --- **Quality Assurance:** - Consistent mechanical properties through full heat treatment - Regular electrical conductivity testing - Certified material traceability - Compliance with international standards **Processing Recommendations:** - Handle with care to prevent surface damage - Store in clean, dry conditions - Use proper tooling for machining operations - Follow recommended welding procedures for optimal results --- **Conclusion:** Aluminum 6951-T6 offers an exceptional combination of high mechanical strength and good electrical conductivity, making it a versatile choice for applications requiring both structural performance and electrical functionality. Its compliance with international standards and reliable performance characteristics make it particularly valuable for electrical transmission, heat exchange, and structural applications across multiple industries. The alloy's balanced properties ensure optimal performance in demanding environments while maintaining the inherent advantages of aluminum's light weight and corrosion resistance.

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 2093 gallon liquid totes Special package is available on request.