2011A Aluminum alloy,Aluminum 2011A alloy,E FORU

### **2011A Aluminum Alloy Product Introduction** **1. Overview** 2011A Aluminum Alloy is a European-designated free-machining aluminum-copper alloy from the 2xxx series, known for its excellent machinability and good mechanical properties. The "A" suffix indicates enhanced quality control and consistent performance characteristics. As a heat-treatable alloy, it achieves good strength through precipitation hardening while maintaining superior machining characteristics, making it ideal for high-volume precision components. **2. Chemical Composition (Typical, % by Weight)** The composition follows strict European standards with optimized elements for machinability. | Element | Content (%) | |---------|-------------| | **Aluminum (Al)** | Balance | | **Copper (Cu)** | 5.0-6.0 | | **Lead (Pb)** | 0.2-0.6 | | **Bismuth (Bi)** | 0.2-0.6 | | **Iron (Fe)** | ≤0.7 | | **Silicon (Si)** | ≤0.4 | | **Zinc (Zn)** | ≤0.3 | | **Other Elements (Each)** | ≤0.05 | | **Other Elements (Total)** | ≤0.15 | *Note: The lead and bismuth content provides excellent free-machining characteristics while copper ensures good age-hardening response.* **3. Physical Properties** | Property | Value | |----------|-------| | **Density** | 2.83 g/cm³ | | **Melting Point** | 540-645°C | | **Electrical Conductivity** | 45% IACS | | **Thermal Conductivity** | 151 W/(m·K) | | **Coefficient of Thermal Expansion** | 23.0 × 10⁻⁶/K (20-100°C) | | **Modulus of Elasticity** | 70 GPa | **4. Mechanical Properties (Typical)** Properties demonstrate excellent machinability with good mechanical strength. | Temper | Tensile Strength (MPa) | Yield Strength (MPa) | Elongation (%) | |--------|------------------------|----------------------|----------------| | **O (Annealed)** | 180-220 | 90-120 | 15-18 | | **T3 (Solution HT + Cold Worked)** | 310-350 | 200-240 | 12-15 | | **T8 (Solution HT + Cold Worked + Aged)** | 380-420 | 280-320 | 8-12 | *Key Characteristics:* * **Excellent Machinability**: Superior free-machining characteristics * **Good Strength**: Age-hardenable for enhanced mechanical properties * **Fine Chip Formation**: Excellent chip breakability during machining * **Good Surface Finish**: Produces high-quality machined surfaces **5. Product Applications** 2011A aluminum is extensively used in high-precision machining applications. * **Automotive Components**: Engine parts, transmission components, fittings * **Aerospace Industry**: Aircraft fittings, hydraulic system parts * **Precision Engineering**: Screws, bolts, nuts, and fasteners * **Electrical Components**: Connectors, terminals, and electrical fittings * **Industrial Machinery**: Valve parts, pump components, gears * **Consumer Electronics**: Precision mechanical parts and components * **Hydraulic Systems**: Fittings and connector parts **6. International Standards** 2011A aluminum is recognized under European and international standardization systems. | Standard System | Designation | |-----------------|-------------| | **EN (Europe)** | EN AW-2011A [AlCu6BiPb] | | **ISO** | AlCu6BiPb | | **ASTM (USA)** | Similar to 2011 | | **UNS (USA)** | UNS A92011 | | **JIS (Japan)** | A2011 | | **GB (China)** | 2A11 | --- **Summary** **2011A Aluminum Alloy** is a **premium free-machining aluminum alloy** that offers **exceptional machining characteristics combined with good mechanical properties**. The "A" designation ensures superior quality control and consistent material performance, making it particularly suitable for high-volume precision machining operations. With its optimized lead and bismuth content, this alloy provides excellent chip formation, superior surface finish, and maintained dimensional stability during machining processes. The combination of good age-hardening response, excellent machinability, and consistent quality makes 2011A particularly valuable for automotive components, aerospace fittings, precision fasteners, and applications requiring extensive machining operations with tight tolerances. Its reliable performance and superior machining characteristics establish it as a preferred choice for high-volume production of precision components across various industries.

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 1506 gallon liquid totes Special package is available on request.