2111A Aluminum alloy,Aluminum 2111A alloy,E FORU

### **Product Datasheet: 2111A Aluminum Alloy** --- #### **1. Overview** 2111A Aluminum Alloy is an improved version of the standard 2111 alloy, offering enhanced machinability and more consistent mechanical properties. This free-machining aluminum-copper alloy maintains the excellent chip characteristics of its predecessor while providing better surface finish capabilities and improved dimensional stability during high-speed machining operations. The "A" designation indicates specific refinements in composition and processing that deliver superior performance in automated manufacturing environments. --- #### **2. International Standards** - **UNS**: Not assigned (European variant) - **EN**: EN 573-3 (Aluminum and aluminum alloys - Chemical composition and form of wrought products) - **DIN**: DIN 1745 (Wrought Aluminum and Aluminum Alloys) - **AFNOR**: A-U5GT (French Standard) - **ISO**: ISO 6362 (Wrought Aluminum and Aluminum Alloy Extruded Rod/Bar, Tube, and Profiles) --- #### **3. Chemical Composition (Weight %)** | Element | Content (%) | |---------|-------------| | **Aluminum (Al)** | Balance | | **Copper (Cu)** | 5.0–6.0 | | **Bismuth (Bi)** | 0.30–0.7 | | **Lead (Pb)** | 0.20–0.6 | | **Iron (Fe)** | ≤ 0.15 | | **Silicon (Si)** | ≤ 0.12 | | **Manganese (Mn)** | ≤ 0.08 | | **Magnesium (Mg)** | ≤ 0.05 | | **Zinc (Zn)** | ≤ 0.08 | | **Titanium (Ti)** | ≤ 0.08 | | **Other Elements** | ≤ 0.03 each | | **Total Others** | ≤ 0.10 | --- #### **4. Physical Properties** | Property | Value | |----------|-------| | **Density** | 2.83–2.85 g/cm³ (0.102–0.103 lb/in³) | | **Melting Range** | ~540–640°C (1000–1185°F) | | **Electrical Conductivity** | ~46–51 % IACS | | **Thermal Conductivity** | 165–185 W/m·K | | **Coefficient of Thermal Expansion** | 23.0–24.0 × 10⁻⁶/°C (20–100°C) | | **Modulus of Elasticity** | 70.5–72.5 GPa (10,200–10,500 ksi) | --- #### **5. Mechanical Properties (Typical Values - T6 Temper)** | Property | Typical Value | |----------|---------------| | **Tensile Strength (Ultimate)** | 330–380 MPa (48–55 ksi) | | **Tensile Yield Strength (0.2% Offset)** | 250–300 MPa (36–44 ksi) | | **Elongation at Break** | 13–20% | | **Shear Strength** | 210–250 MPa (30–36 ksi) | | **Hardness (Brinell)** | 90–105 HB | | **Fatigue Strength** | 115–135 MPa (17–20 ksi) | | **Machinability Rating** | Excellent (90–95% of free-cutting brass) | --- #### **6. Key Characteristics & Advantages** - **Enhanced Machinability**: Superior to standard 2111 alloy with better chip control - **Improved Surface Finish**: Capable of achieving finer surface finishes - **Consistent Performance**: More uniform properties throughout the material - **Reduced Tool Wear**: Extended tool life in high-volume production - **Better Chip Breaking**: Excellent chip formation for automated operations - **Thermal Stability**: Maintains dimensional accuracy during machining - **Environmental Compliance**: Meets European environmental standards --- #### **7. Product Applications** - **High-Volume Machined Parts**: Automotive and aerospace components - **Precision Instruments**: Medical device components and optical parts - **Electronic Connectors**: High-precision electrical components - **Hydraulic Systems**: Precision valves and fluid handling parts - **Fastener Industry**: Specialized screws and fastening elements - **Watchmaking**: Precision watch components and mechanical parts --- #### **8. Available Forms** - Precision Drawn Bars - Cold Finished Rods - Wire for CNC Machining - Special Extruded Sections - Custom Blank Sizes --- #### **9. Processing and Quality Features** - **Tighter Tolerances**: Improved dimensional consistency - **Surface Quality**: Superior as-supplied surface condition - **Machining Parameters**: Optimized for CNC and automatic screw machines - **Heat Treatment**: Controlled aging for consistent hardness - **Quality Certification**: Full traceability and quality documentation - **Environmental Compliance**: Meets RoHS and other environmental directives --- **Disclaimer**: The information presented is typical and for reference only. Actual properties may vary with processing parameters and specific manufacturing conditions. For technical specifications and application engineering support, please contact our technical service department.

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 1595 gallon liquid totes Special package is available on request.