6011 Aluminum alloy,Aluminum 6011 alloy,E FORU

### **Product Introduction: 6011 Aluminum Alloy** **6011 Aluminum Alloy** is a heat-treatable aluminum-magnesium-silicon (Al-Mg-Si) alloy specifically designed for applications requiring excellent machinability combined with good mechanical properties and corrosion resistance. This alloy is particularly distinguished by its superior free-machining characteristics, making it a preferred choice for high-volume production of complex parts where machining operations are extensive. --- ### **1. International Standards** 6011 Aluminum Alloy is recognized under the following international standards: - **AA (Aluminum Association, USA):** AA 6011 - **UNS (Unified Numbering System):** UNS A96011 - **ISO (International Organization for Standardization):** AlMg0.9Si - **EN (European Norm):** EN AW-6011 - **ASTM:** ASTM B211 (Standard Specification for Aluminum and Aluminum-Alloy Bar, Rod, and Wire) --- ### **2. Chemical Composition** The chemical composition limits (in weight percentage) are specified as follows: | Element | Content (%) | |:---------|:------------| | **Aluminum (Al)** | Balance | | **Silicon (Si)** | 0.60 - 1.1 | | **Magnesium (Mg)** | 0.50 - 1.0 | | **Manganese (Mn)** | 0.20 - 0.6 | | **Copper (Cu)** | 0.25 - 0.50 | | **Iron (Fe)** | ≤ 0.35 | | **Chromium (Cr)** | ≤ 0.20 | | **Zinc (Zn)** | ≤ 0.20 | | **Titanium (Ti)** | ≤ 0.10 | | **Lead (Pb)** | 0.20 - 0.6 | | **Bismuth (Bi)** | 0.20 - 0.6 | | **Others (each)** | ≤ 0.05 | | **Others (total)** | ≤ 0.15 | **Key Takeaway:** The strategic addition of Lead (Pb) and Bismuth (Bi) significantly enhances machinability by promoting chip breakage and improving surface finish. The balanced magnesium-silicon-copper composition provides good age-hardening response and mechanical strength. --- ### **3. Physical Properties** The typical physical properties of 6011 aluminum alloy are: | Property | Metric Value | Imperial Value | |:----------|:-------------|:---------------| | **Density** | 2.70 g/cm³ | 0.0975 lb/in³ | | **Melting Range** | 580 - 650 °C | 1076 - 1202 °F | | **Coefficient of Thermal Expansion** | 23.6 × 10⁻⁶/°C (20-100°C) | 13.1 × 10⁻⁶/°F (68-212°F) | | **Thermal Conductivity** | 155 - 175 W/m·K | 895 - 1010 BTU·in/(hr·ft²·°F) | | **Electrical Conductivity** | 40-45% IACS | 40-45% IACS | | **Modulus of Elasticity** | 69 GPa | 10,000 ksi | | **Shear Modulus** | 26 GPa | 3,770 ksi | --- ### **4. Mechanical Properties** Mechanical properties vary with temper condition: **Temper: T4** (Solution heat-treated and naturally aged) - **Tensile Strength:** 230 - 280 MPa (33 - 41 ksi) - **Yield Strength (0.2% Offset):** 130 - 180 MPa (19 - 26 ksi) - **Elongation (% in 50mm):** 16-20% **Temper: T6** (Solution heat-treated and artificially aged) - **Tensile Strength:** 310 - 360 MPa (45 - 52 ksi) - **Yield Strength (0.2% Offset):** 270 - 320 MPa (39 - 46 ksi) - **Elongation (% in 50mm):** 8-12% - **Hardness (Brinell):** 95 - 105 HB --- ### **5. Product Applications** 6011 Aluminum Alloy is primarily used in applications requiring extensive machining: - **Automotive Components:** - Engine components - Transmission parts - Fuel system components - Brake system parts - **Precision Machined Parts:** - Valve bodies - Pump components - Hydraulic system parts - Instrumentation components - **Electrical and Electronic:** - Connector bodies - Electrical housings - Heat sink bases - **General Manufacturing:** - Screw machine products - Complex geometrical parts - High-volume production components --- ### **6. Key Characteristics & Advantages** - **Excellent Machinability:** Rated among the best machinable aluminum alloys, providing superior chip characteristics, excellent surface finish, and extended tool life compared to standard aluminum alloys. - **Good Mechanical Properties:** Offers a favorable combination of strength and ductility in both T4 and T6 tempers. - **Age-Hardenable:** Responds well to heat treatment, allowing for flexibility in achieving desired strength levels. - **Good Anodizing Response:** Can be anodized for improved corrosion resistance and aesthetic appearance. - **Improved Chip Breakage:** The lead and bismuth additions promote discontinuous chip formation, reducing the risk of long, stringy chips during machining. - **Good Dimensional Stability:** Maintains dimensional accuracy during and after machining operations. - **Weldability:** Can be welded using conventional methods, though precautions are needed due to the lead and bismuth content. --- ### **7. Processing Characteristics** **Machining Performance:** - **Machinability Rating:** 90-95 (compared to 2011-T3 as 100) - **Surface Speed:** Can be machined at higher speeds than standard aluminum alloys - **Tool Life:** Significantly extended compared to non-free-machining aluminum alloys - **Chip Characteristics:** Short, broken chips that are easily disposed **Heat Treatment:** - Solution Heat Treatment: 530-550°C (985-1020°F) - Quenching: Water quench - Artificial Aging: 160-180°C (320-355°F) for 8-12 hours for T6 temper **Safety Considerations:** - Contains lead and bismuth - proper ventilation and handling procedures required - Chip disposal should follow environmental regulations for lead-containing materials - Machining coolant selection should consider the alloy composition --- ### **8. Special Considerations** **Environmental Compliance:** - Lead-free alternatives should be considered for applications with strict environmental requirements - Recycling requires special handling due to lead content - Compliance with RoHS and other environmental regulations should be verified **Alternative Alloys:** - 6023 and 6026 alloys offer improved machinability with lower environmental impact - 2011 alloy provides similar machinability but with different mechanical properties In summary, **6011 Aluminum Alloy** represents a specialized free-machining aluminum alloy that delivers exceptional machining performance while maintaining good mechanical properties and corrosion resistance. Its unique composition with lead and bismuth additions makes it particularly valuable for high-volume production of precision machined components across various industries, especially automotive and general manufacturing, where machining efficiency and part quality 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 1955 gallon liquid totes Special package is available on request.