6005B Aluminum alloy,Aluminum 6005B alloy,E FORU

### **Product Introduction: 6005B Aluminum Alloy** **6005B Aluminum Alloy** is a high-strength, heat-treatable alloy within the aluminum-magnesium-silicon (Al-Mg-Si) system. It is a European variant with a carefully controlled chemical composition, notably higher Silicon content, designed to provide superior mechanical properties compared to 6005A. It is primarily used for heavily stressed structural components, especially in the transportation industry, where an excellent combination of high strength, good extrusion weldability, and corrosion resistance is required. --- ### **1. International Standards** 6005B Aluminum Alloy is specified under the following key international standards: * **EN (European Norm):** EN AW-6005B (EN 573-3) * **ISO (International Organization for Standardization):** AlSi0.7Mg * **Note:** This alloy is less common in the AA (Aluminum Association) system and is primarily standardized in Europe. It is often supplied to meet specific customer and industry specifications derived from the EN standard. --- ### **2. Chemical Composition** The chemical composition limits (in weight percentage) as per the EN 573-3 standard are detailed below. The key difference from 6005A is a higher Silicon (Si) content. | Element | Content (%) | | :--- | :--- | | **Aluminum (Al)** | Balance | | **Silicon (Si)** | 0.50 - 0.9 | | **Magnesium (Mg)** | 0.40 - 0.7 | | **Manganese (Mn)** | ≤ 0.50 | | **Iron (Fe)** | ≤ 0.35 | | **Chromium (Cr)** | ≤ 0.30 | | **Copper (Cu)** | ≤ 0.30 | | **Zinc (Zn)** | ≤ 0.20 | | **Titanium (Ti)** | ≤ 0.10 | | **Others (each)** | ≤ 0.05 | | **Others (total)** | ≤ 0.15 | **Key Takeaway:** The higher Silicon (Si) content, often at the upper end of the range, leads to the formation of a greater volume of strengthening Mg₂Si precipitates and free Silicon particles during heat treatment. This is the primary reason for its enhanced strength over 6005A. --- ### **3. Physical Properties** The typical physical properties of 6005B aluminum alloy are listed in the table below. | Property | Metric Value | Imperial Value | | :--- | :--- | :--- | | **Density** | 2.70 g/cm³ | 0.0975 lb/in³ | | **Melting Range** | ~ 605 - 655 °C | ~ 1120 - 1210 °F | | **Coefficient of Thermal Expansion** | 23.4 x 10⁻⁶/°C (20-100°C) | 13.0 x 10⁻⁶/°F (68-212°F) | | **Thermal Conductivity** | 170 - 190 W/m·K | 985 - 1100 BTU·in/(hr·ft²·°F) | | **Electrical Conductivity** | ~ 45-50% IACS | ~ 45-50% IACS | | **Modulus of Elasticity** | 69 - 71 GPa | 10,000 - 10,300 ksi | --- ### **4. Mechanical Properties** Mechanical properties are highly dependent on the temper condition. The following are typical values for extruded sections. 6005B in the T6 temper is known to achieve strength levels close to or exceeding those of 6082-T6. **Temper: T5** (Cooled from an elevated temperature shaping process and artificially aged) * **Tensile Strength:** 240 - 270 MPa (35 - 39 ksi) * **Yield Strength (0.2% Offset):** 200 - 230 MPa (29 - 33 ksi) * **Elongation (% in 50mm):** 8% **Temper: T6** (Solution heat-treated and artificially aged) * **Tensile Strength:** 290 - 320 MPa (42 - 46 ksi) * **Yield Strength (0.2% Offset):** 260 - 290 MPa (38 - 42 ksi) * **Elongation (% in 50mm):** 8 - 10% --- ### **5. Product Applications** 6005B is a premium alloy used for high-stress structural applications, primarily in the form of extruded profiles. * **Transportation (Primary Application):** * **Rail Vehicle Bodywork:** High-stress members like underframe longitudinal beams, cross members, side sills, and roof bows. * **Automotive:** Chassis components, seat frames, and bumper systems. * **Commercial Vehicle & Bus:** Flooring supports, body frames, and container bodies. * **Marine Industry:** * Structural components for ship superstructures and small boat hulls. * **Advanced Structures:** * Mobile cranes, aerial work platforms, and lifting equipment. * High-load-bearing architectural structures and bridges. --- ### **6. Key Characteristics & Advantages** * **High Static & Dynamic Strength:** Offers one of the highest strength levels among commonly extrudable Al-Mg-Si alloys, making it suitable for primary load-bearing structures. * **Good Extrusion Weldability:** Performs well in complex hollow profiles where metal-to-metal welding occurs inside the extrusion die, a critical feature for structural components. * **Good Corrosion Resistance:** Maintains the good atmospheric corrosion resistance characteristic of the Al-Mg-Si family. * **Good Fracture Toughness:** Exhibits adequate toughness for use in safety-critical applications like railway vehicles. * **Excellent Anodizing Response:** Capable of producing a high-quality, durable anodized surface finish for both protection and aesthetics. * **Weldability:** Can be readily arc-welded (MIG/TIG), though post-weld heat treatment may be required to restore full strength in the heat-affected zone. In summary, **EN AW-6005B Aluminum Alloy** is a **high-performance structural extrusion alloy**. Its optimized chemistry places it at the top tier of the 6000 series in terms of strength, making it a material of choice for engineers designing **lightweight yet highly robust structures** in the railway, automotive, and heavy machinery sectors.

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 1945 gallon liquid totes Special package is available on request.