2012 Aluminum alloy,Aluminum 2012 alloy,E FORU

### **2012 Aluminum Alloy Product Introduction** **1. Overview** 2012 Aluminum Alloy is a heat-treatable aluminum-copper alloy from the 2xxx series, specifically designed for applications requiring high strength and excellent machinability. This alloy contains lead as a free-machining additive, making it particularly suitable for high-speed machining operations and precision components. It offers a good combination of mechanical properties and manufacturing efficiency. **2. Chemical Composition (Typical, % by Weight)** The composition features copper as the primary alloying element with lead addition for machinability. | Element | Content (%) | |---------|-------------| | **Aluminum (Al)** | Balance | | **Copper (Cu)** | 3.5-4.5 | | **Lead (Pb)** | 0.8-1.5 | | **Magnesium (Mg)** | 0.20-0.50 | | **Iron (Fe)** | ≤0.20 | | **Silicon (Si)** | ≤0.15 | | **Zinc (Zn)** | ≤0.10 | | **Manganese (Mn)** | 0.20-0.50 | | **Other Elements (Each)** | ≤0.05 | | **Other Elements (Total)** | ≤0.15 | *Note: The lead content provides excellent free-machining characteristics while copper and magnesium contribute to age-hardening capability.* **3. Physical Properties** | Property | Value | |----------|-------| | **Density** | 2.82 g/cm³ | | **Melting Point** | 550-640°C | | **Electrical Conductivity** | 44% IACS | | **Thermal Conductivity** | 155 W/(m·K) | | **Coefficient of Thermal Expansion** | 23.1 × 10⁻⁶/K (20-100°C) | | **Modulus of Elasticity** | 71 GPa | **4. Mechanical Properties (Typical)** Properties show good response to heat treatment with excellent machinability. | Temper | Tensile Strength (MPa) | Yield Strength (MPa) | Elongation (%) | |--------|------------------------|----------------------|----------------| | **O (Annealed)** | 220-260 | 110-140 | 14-18 | | **T4 (Solution Heat Treated)** | 350-390 | 200-240 | 14-18 | | **T6 (Peak Aged)** | 420-460 | 360-400 | 8-12 | *Key Characteristics:* * **Excellent Machinability**: Superior free-machining characteristics * **High Strength**: Good strength-to-weight ratio * **Good Wear Resistance**: Suitable for moving parts and bearing surfaces * **Heat Treatable**: Responds well to precipitation hardening treatments **5. Product Applications** 2012 aluminum is primarily used for precision-machined components and high-stress applications. * **Automotive Components**: Engine parts, transmission components, fittings * **Aerospace Industry**: Aircraft fittings, hydraulic system parts * **Industrial Machinery**: Precision gears, pump components, valve parts * **Hydraulic Systems**: Cylinder components and hydraulic fittings * **Precision Instruments**: High-accuracy mechanical components * **Electrical Components**: Connectors and electrical fittings * **Consumer Products**: High-quality mechanical parts and assemblies **6. International Standards** 2012 aluminum is recognized under major international standardization systems. | Standard System | Designation | |-----------------|-------------| | **ISO** | AlCu4PbMg | | **EN (Europe)** | EN AW-2012 | | **ASTM (USA)** | ASTM B211 2012 | | **UNS (USA)** | UNS A92012 | | **JIS (Japan)** | A2012 | | **GB (China)** | 2A12 | --- **Summary** **2012 Aluminum Alloy** is a **high-strength free-machining aluminum alloy** that offers an **excellent combination of mechanical properties and manufacturing efficiency**. With its copper content of 3.5-4.5% and strategic lead addition, this alloy provides good age-hardening response while maintaining superior machining characteristics. The balanced composition makes 2012 particularly suitable for automotive components, aerospace fittings, precision machinery parts, and applications requiring extensive machining operations. Its proven performance in high-speed machining applications and reliable mechanical properties establish it as a valuable material choice for components where both precision manufacturing and structural integrity are essential requirements. The alloy continues to serve important roles in various industries where the combination of machinability and strength provides significant manufacturing advantages.

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 1511 gallon liquid totes Special package is available on request.