2111 Aluminum alloy,Aluminum 2111 alloy,E FORU

### **Product Datasheet: 2111 Aluminum Alloy** --- #### **1. Overview** 2111 Aluminum Alloy is a high-purity, free-machining aluminum-copper alloy specifically designed for precision machining applications. This heat-treatable alloy combines excellent machinability with good mechanical properties and surface finish capabilities. 2111 is particularly valued in applications requiring extensive machining operations, where its superior chip characteristics and machining performance significantly reduce production time and improve manufacturing efficiency while maintaining dimensional stability and part quality. --- #### **2. International Standards** - **UNS**: UNS A92111 - **ASTM**: ASTM B211 (Standard Specification for Aluminum and Aluminum-Alloy Bar, Rod, and Wire) - **AA (Aluminum Association)**: AA 2111 - **ISO**: ISO 6362 (Wrought Aluminum and Aluminum Alloy Extruded Rod/Bar, Tube, and Profiles) - **DIN**: DIN 1745 (Wrought Aluminum and Aluminum Alloys) --- #### **3. Chemical Composition (Weight %)** | Element | Content (%) | |---------|-------------| | **Aluminum (Al)** | Balance | | **Copper (Cu)** | 5.0–6.0 | | **Bismuth (Bi)** | 0.20–0.6 | | **Lead (Pb)** | 0.20–0.6 | | **Iron (Fe)** | ≤ 0.20 | | **Silicon (Si)** | ≤ 0.15 | | **Manganese (Mn)** | ≤ 0.10 | | **Magnesium (Mg)** | ≤ 0.05 | | **Zinc (Zn)** | ≤ 0.10 | | **Titanium (Ti)** | ≤ 0.10 | | **Other Elements** | ≤ 0.05 each | | **Total Others** | ≤ 0.15 | --- #### **4. Physical Properties** | Property | Value | |----------|-------| | **Density** | 2.83–2.85 g/cm³ (0.102–0.103 lb/in³) | | **Melting Range** | ~540–645°C (1000–1190°F) | | **Electrical Conductivity** | ~45–50 % IACS | | **Thermal Conductivity** | 160–180 W/m·K | | **Coefficient of Thermal Expansion** | 23.2–24.2 × 10⁻⁶/°C (20–100°C) | | **Modulus of Elasticity** | 70.0–72.0 GPa (10,150–10,450 ksi) | --- #### **5. Mechanical Properties (Typical Values - T6 Temper)** | Property | Typical Value | |----------|---------------| | **Tensile Strength (Ultimate)** | 320–370 MPa (46–54 ksi) | | **Tensile Yield Strength (0.2% Offset)** | 240–290 MPa (35–42 ksi) | | **Elongation at Break** | 12–18% | | **Shear Strength** | 200–240 MPa (29–35 ksi) | | **Hardness (Brinell)** | 85–100 HB | | **Fatigue Strength** | 110–130 MPa (16–19 ksi) | | **Machinability Rating** | Excellent (85–90% of free-cutting brass) | --- #### **6. Key Characteristics & Advantages** - **Superior Machinability**: Excellent chip formation and surface finish - **Free-Machining Properties**: Bismuth and lead additions enhance machining - **Good Strength-to-Weight Ratio**: Reasonable strength with aluminum's light weight - **Excellent Surface Finish**: Capable of producing high-quality machined surfaces - **Thermal Stability**: Maintains dimensional stability during machining - **Chip Control**: Produces small, broken chips for easy removal - **Tool Life Extension**: Reduced tool wear compared to standard aluminum alloys --- #### **7. Product Applications** - **Precision Machined Parts**: Screw machine products and turned components - **Automotive Components**: Fuel system parts and precision fittings - **Aerospace Fasteners**: Specialized screws, bolts, and fasteners - **Hydraulic Components**: Valve bodies and pneumatic system parts - **Electronic Components**: Connectors and shielding parts - **General Engineering**: Bushings, fittings, and small mechanical parts --- #### **8. Available Forms** - Round Bars and Rods - Hexagonal and Square Bars - Wire Stock - Screw Machine Stock --- #### **9. Processing and Machining Guidelines** - **Machining Speed**: Capable of high-speed machining operations - **Tool Selection**: Standard high-speed steel or carbide tools recommended - **Coolant Use**: Water-based coolants improve surface finish and tool life - **Heat Treatment**: Responsive to solution treatment and artificial aging - **Surface Treatment**: Suitable for anodizing and other finishing processes - **Quality Control**: Consistent microstructure for predictable machining performance --- **Disclaimer**: The information presented is typical and for reference only. Actual properties may vary with processing, size, and heat treatment. For critical applications, contact our technical service team for specific data and processing recommendations.

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 1594 gallon liquid totes Special package is available on request.