6351-T54 Aluminum alloy,Aluminum 6351-T54 alloy,E FORU

### **Aluminum 6351-T54 Alloy (EN AW-6351) - Product Introduction** **Aluminum 6351-T54** is a heat-treatable aluminum-magnesium-silicon alloy supplied in a solution heat-treated and stress-relieved condition by stretching followed by artificial aging. This specific temper designation indicates that the material has been processed to achieve improved dimensional stability for machining operations while maintaining good mechanical properties for structural applications. --- #### **1. Chemical Composition** The chemical composition conforms to standard 6351 alloy specifications with precise control: | Element | Content (%) (Typical) | Standard Range | |---|---|---| | **Aluminum (Al)** | Balance | Balance | | **Magnesium (Mg)** | 0.45 - 0.9 | 0.40 - 0.8 | | **Silicon (Si)** | 0.80 - 1.2 | 0.70 - 1.3 | | **Iron (Fe)** | ≤ 0.50 | ≤ 0.50 | | **Copper (Cu)** | ≤ 0.10 | ≤ 0.10 | | **Manganese (Mn)** | 0.45 - 0.8 | 0.40 - 0.8 | | **Chromium (Cr)** | ≤ 0.25 | ≤ 0.20 | | **Zinc (Zn)** | ≤ 0.20 | ≤ 0.20 | | **Titanium (Ti)** | ≤ 0.10 | ≤ 0.10 | | **Others (Each)** | ≤ 0.05 | ≤ 0.05 | | **Others (Total)** | ≤ 0.15 | ≤ 0.15 | --- #### **2. Physical Properties** | Property | Metric Value | Imperial Value | |---|---|---| | **Density** | 2.71 g/cm³ | 0.0979 lb/in³ | | **Melting Range** | 580 - 650 °C | 1076 - 1202 °F | | **Electrical Conductivity** | 40-44 % IACS | 40-44 % IACS | | **Thermal Conductivity** | 170-185 W/m·K | 1180-1285 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 (T54 Temper):** | Property | Metric Value | Imperial Value | |---|---|---| | **Tensile Strength, Ultimate** | 250-290 MPa | 36,300-42,100 psi | | **Tensile Strength, Yield (0.2%)** | 200-240 MPa | 29,000-34,800 psi | | **Elongation in 50mm** | 10-14% | 10-14% | | **Hardness (Brinell)** | 80-95 HB | 80-95 HB | | **Shear Strength** | 165 MPa | 23,900 psi | | **Fatigue Strength** | 95 MPa | 13,800 psi | | **Fracture Toughness** | 29 MPa·√m | 26.4 ksi·√in | --- #### **4. International Standards** - **EN Standard:** EN AW-6351 (3.3207) - **ISO:** ISO 209 AlMgSi - **ASTM:** ASTM B221, ASTM B316 - **AMS:** AMS 4115 - **JIS:** JIS H 4040 - **GB/T:** GB/T 3190 --- #### **5. Product Applications** **Primary Applications:** - **Structural Components:** Medium-stress structural members in transportation - **Marine Hardware:** Boat fittings, railings, and marine structural parts - **Vehicle Components:** Truck chassis parts, trailer structural members - **Architectural Elements:** Structural glazing systems, window components - **Industrial Machinery:** Machine frames, structural supports - **Material Handling:** Conveyor components, handling equipment parts - **Sporting Goods:** Bicycle components, sports equipment frames **Specific Use Cases:** - Extruded structural profiles for transportation industry - Stress-relieved components requiring machining stability - Medium-strength structural applications with corrosion resistance requirements - Parts requiring subsequent machining operations with dimensional stability --- #### **6. Key Advantages & Characteristics** **Mechanical Advantages:** - **Good Strength-to-Weight Ratio:** Optimal for weight-sensitive applications - **Improved Dimensional Stability:** Stress-relieved for consistent machining - **Moderate Strength:** Suitable for structural applications - **Good Fatigue Resistance:** Performs well under cyclic loading conditions **Manufacturing Advantages:** - **Excellent Extrudability:** Can be formed into complex profiles - **Good Machinability:** Stable during machining operations - **Weldability:** Can be welded using standard aluminum welding methods - **Formability:** Can be formed and shaped in T54 condition **Performance Characteristics:** - **Corrosion Resistance:** Good resistance to atmospheric corrosion - **Stress Relief:** Reduced internal stresses for better performance - **Aging Stability:** Maintains properties over time - **Thermal Stability:** Good performance at moderate temperatures **Processing Considerations:** - Solution heat treatment: 515-540°C (960-1000°F) - Artificial aging temperature: 160-180°C (320-355°F) - Stress relief by stretching: 1.5-3% permanent set - Suitable for subsequent machining and fabrication --- **Conclusion:** Aluminum 6351-T54 provides an optimal balance of mechanical properties, dimensional stability, and manufacturing flexibility for structural applications. The specific T54 temper treatment ensures reliable performance in components requiring both structural integrity and machining precision. While offering good general performance, appropriate design considerations and quality control measures should be implemented, particularly for applications where long-term reliability is critical. The alloy's combination of properties makes it particularly valuable for transportation and structural applications where weight savings and corrosion resistance are important factors.

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 2075 gallon liquid totes Special package is available on request.