The 2011 aluminum alloy is a copper-based aluminum alloy that stands out due to its exceptional machinability, thanks to the inclusion of bismuth (Bi) elements. This alloy is known for providing excellent deep drawing capabilities in its T3 temper state at lower strengths, while the T8 temper offers higher strength levels. With a classification of mechanical machining performance level A, 2011 aluminum is highly productive and efficient, particularly when processed on automated lathes. It typically doesn't require chip breakers, which enhances operational simplicity.
The 2011 aluminum alloy is extensively utilized in hardware components, automotive oil systems, clock mechanisms, gears, pipelines, audio-visual connectors, photographic equipment, and various industrial applications such as connectors, potentiometers, and timers. Its versatility extends into military applications and electronic devices.
Chemical Composition:
| Element | Content (%) |
|---------|-------------|
| Si | ≤0.40 |
| Fe | ≤0.70 |
| Cu | 5.0–6.0 |
| Si + Fe | ≤0.40 |
| Mg | Undetermined |
| Pb | 0.2–0.6 |
| Zn | ≤0.30 |
| Bi | 0.2–0.6 |
| Other | ≤0.15 |
| Al | Remainder |
Mechanical Properties:
| Property | Value |
|------------------------|------------------|
| Tensile Strength (MPa) | ≥310 |
| Yield Strength (MPa) | ≥235 |
| Elongation (%) | ≥10 |
| Density (g/cm³) | 2.85 |
| Linear Expansion Coef. | Undetermined |
| Thermal Conductivity | Undetermined |
| Specific Heat (J/kg·K) | Undetermined |
This alloy's excellent machinability and robust mechanical properties make it an ideal choice for industries requiring precision and durability. Whether in consumer electronics or heavy machinery, the 2011 aluminum alloy continues to play a vital role in modern manufacturing processes.
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