产品描述
FAQ Q: What is 2011 aluminum alloy known for? A: 2011 is the premier free-machining aluminum alloy. Its lead (Pb) and bismuth (Bi) additions produce short, easily broken chips, making it ideal for high-speed CNC turning and automatic bar-fed machining. Q: What is the difference between 2011-T3 and 2011-T6? A: T3 is solution heat-treated, cold worked, and naturally aged, offering good strength with higher ductility. T6 is solution heat-treated and artificially aged, providing slightly higher strength and hardness but lower elongation. Q: Is 2011 aluminum weldable? A: No. Due to its lead and bismuth content, 2011 is generally not recommended for welding. The low-melting Pb/Bi phases cause hot cracking during solidification. Mechanical fastening or brazing is preferred for joining.
尺寸范围
- 3–100 mm
- 8–200 mm
牌号标准
| 标准体系 | 数值 |
|---|---|
| AA 2011 | - |
| A92011 | - |
| AlCu6BiPb | - |
| EN AW-2011 | - |
| 2011 | - |
| 3.1255 | - |
| A2011 | - |
化学成分
| 元素 | 数值 |
|---|---|
| Si | ≤0.40 |
| Fe | ≤0.50 |
| Cu | 5.0–6.0 |
| Pb | 0.2–0.6 |
| Bi | 0.2–0.6 |
| Zn | ≤0.30 |
| Si+Fe | ≤0.40 |
| Others (each) | ≤0.05 |
| Others (total) | ≤0.15 |
| Al | Remainder |
机械性能
| 性能 | 数值 |
|---|---|
| Tensile Strength (MPa) | ≥380 |
| Yield Strength (MPa) | ≥295 |
| Elongation (%) | ≥15 |
| Hardness (HB) | ~95 |
物理性能
| 性能 | 单位 | 数值 |
|---|---|---|
| Density | - | 2.82 g/cm³ |
| Melting range | - | 540–640°C |
| Elastic modulus | - | ~71 GPa |
| Thermal expansion (20–100°C) | - | 23.0 × 10⁻⁶ /K |
| Thermal conductivity (T6) | - | ~152 W/(m·K) |
| Electrical resistivity (T6) | - | ~0.040 μΩ·m |
| Electrical conductivity (T6) | - | ~40% IACS |
应用场景
- Precision-machined components: bolts, screws, nuts, threaded fasteners
- Automotive parts: engine components, transmission parts, fittings
- Electronic and electrical components: connectors, terminals, housings
- Swiss-type lathe and CNC machined parts requiring high throughput
- Valve bodies, bushings, and collets
- Camera and optical instrument parts