2011 Aluminum Round Bar
2011 aluminum round bar is an aluminum alloy with high strength and excellent machinability, especially favored for its outstanding performance and precision in high-speed machining. This alloy is widely used in industries such as automotive, aerospace, and electronics, particularly suitable for automatic screw machines producing complex and fine components. Its main elements include copper (5-6%), lead (0.2-0.6%), and bismuth (0.2-0.6%), which enhance its chip-breaking ability during the machining process, thus improving production efficiency and tool life.
As a round bar form of 2011 aluminum alloy, it has the best machinability among all aluminum alloys, and its mechanical properties are also outstanding. During machining, the 2011 aluminum round bar can withstand large feed rates and has good corrosion resistance, hardness, and strength, making it widely used in manufacturing parts that require extensive machining, especially in high-speed machining environments.
2011 Aluminum Round Bar Characteristics
| Characteristics | Detailed Description |
| Machinability | 2011 aluminum round bar has excellent machinability, especially suitable for high-speed machining and high-feed operations. It produces fine chips, significantly reducing cutting forces and tool wear, thus improving machining efficiency and extending tool life. |
| Chip Formation | 2011 aluminum round bar produces fine chips, which helps to reduce cutting forces and tool wear, improving machining efficiency and extending tool life. |
| Precision and Efficiency | With its excellent machinability, 2011 aluminum round bar can meet the high demands for precision and efficiency in these applications. |
2011 Aluminum Round Bar Physical Properties
| Physical Property | Description |
| Density | 2.82–2.83 g/cm³ |
| Melting Point | 535°C (1000°F) |
| Thermal Conductivity | 138–990 BTU-in/hr-ft²-°F (varies by source) |
2011 Aluminum Round Bar Chemical Composition Table
| Element | Content Range |
| Silicon (Si) | 0.4% |
| Iron (Fe) | 0.7% |
| Copper (Cu) | 5%-6% |
| Lead (Pb) | 0.2%-0.6% |
| Bismuth (Bi) | 0.2%-0.6% |
| Zinc (Zn) | 0.3% |
2011 Aluminum Round Bar Heat Treatment and Tempers
- 2011 T3 Aluminum: Solution heat treatment, cold working, and natural aging.
- 2011 T6 Aluminum: Solution heat treatment and artificial aging.
- 2011 T8 Aluminum: Solution heat treatment, cold working, artificial aging, achieving maximum strength.
| Aluminum Alloy Temper | Heat Treatment Process | Detailed Description |
| 2011 T3 | Solution heat treatment, cold working, natural aging | 2011 T3 aluminum alloy undergoes solution heat treatment first, where it is heated to a high temperature and then rapidly cooled, allowing alloy elements to dissolve into the aluminum matrix. It is then further strengthened through cold working to enhance hardness and strength. Finally, natural aging is carried out by leaving the material at room temperature for a period of time, allowing precipitates within the material to refine and improve mechanical properties. T3 temper aluminum alloys are suitable for applications requiring moderate strength and good machinability. |
| 2011 T6 | Solution heat treatment, artificial aging | 2011 T6 aluminum alloy is first subjected to solution heat treatment, where it is heated to a high temperature and quickly cooled to ensure the alloy elements are fully dissolved. Then, artificial aging is carried out by heating the material to a specified temperature and holding it for a period of time, allowing the precipitates to refine and significantly increase strength. T6 temper aluminum alloys exhibit high strength and hardness, making them suitable for applications that require the handling of large loads and high strength. |
| 2011 T8 | Solution heat treatment, cold working, artificial aging | 2011 T8 aluminum alloy undergoes multiple steps including solution heat treatment, cold working, and artificial aging. First, the aluminum alloy is subjected to solution heat treatment, where it is heated to a high temperature and rapidly cooled to dissolve the alloy elements. Then, cold working further increases the material's strength. In the artificial aging process, the aluminum alloy is heated to a specified temperature and held under controlled conditions for a certain period of time, allowing the precipitates to refine and maximize the strength. T8 temper results in the alloy achieving its best strength and hardness, making it ideal for high-precision applications requiring high strength and good machinability. |
2011 Aluminum Round Bar Corrosion Resistance
Relatively poor; prone to oxidation in humid or corrosive environments. Anodizing is recommended to enhance protection.
The corrosion resistance of 2011 aluminum alloy is relatively poor, especially in humid or corrosive environments, where oxidation reactions are likely to occur. The surface of the aluminum alloy will quickly form a thin oxide film. While this oxide layer offers some protection, its effectiveness is limited in specific environments (such as marine climates or environments containing chemical corrosive substances). Prolonged exposure to these conditions may lead to corrosion on the surface of the aluminum alloy, affecting its structural integrity and appearance.
To enhance its corrosion resistance, anodizing treatment is recommended for 2011 aluminum alloy. Anodizing can also improve the material's appearance, providing better wear resistance and a more aesthetically pleasing surface finish. Therefore, anodizing is an effective way to improve the corrosion resistance of 2011 aluminum alloy.
2011 Aluminum Round Bar Applications
- Automotive: Fuel injectors, pump housings, and speedometer assemblies.
- Electronics: TV housings, camera frames, and watch parts.
- Machinery: Screw machine parts, industrial connectors, and precision gears.
- Aerospace/Marine: Lightweight structural components requiring high strength-to-weight ratio.
| Application Area | Applied Parts | Detailed Description |
| Automotive | Fuel injectors, pump housings, speedometer assemblies | 2011 aluminum round bars are widely used in the automotive industry for parts such as fuel injectors, pump housings, and speedometer assemblies. These components require high precision and durability. 2011 aluminum alloy, with its good machinability and moderate strength, provides the necessary mechanical properties. Particularly in applications such as fuel injectors and pump housings, precise dimensions and wear resistance are crucial, and 2011 aluminum alloy ensures stability during long-term use. |
| Electronics | TV housings, camera frames, watch parts | 2011 aluminum round bars are widely used in the electronics industry for parts like TV housings, camera frames, and watch parts. Due to its lightweight and machinability, aluminum alloy is ideal for manufacturing precision electronic product enclosures. These parts require both durability and an aesthetically pleasing appearance with high precision, and 2011 aluminum alloy improves corrosion resistance through surface treatment, ensuring product quality and stability during long-term use. |
| Machinery | Screw machine parts, industrial connectors, precision gears | 2011 aluminum round bars are used in the machinery industry to manufacture parts like screw machine parts, industrial connectors, and precision gears. Due to its excellent machinability, 2011 aluminum alloy can be precisely processed into complex shapes to meet various industrial requirements. These components typically require high wear resistance and durability, and 2011 aluminum alloy effectively ensures the efficient operation and long-term stability of machinery. |
| Aerospace/Marine | Lightweight structural components (such as airframe frames, ship hulls, etc.) | 2011 aluminum round bars are primarily used in aerospace and marine industries for lightweight structural components requiring a high strength-to-weight ratio. These components require materials that offer both high strength and low weight, thus improving the performance and fuel efficiency of aircraft and ships. Due to 2011 aluminum alloy’s lower density and good mechanical properties, it is an ideal choice for such high-performance applications, and it is widely used in the manufacturing of aerospace and marine structural parts. |
2011 Aluminum Round Bar Fabrication Considerations
- Welding: Due to poor weldability, it is not recommended; mechanical fastening alternatives are preferable.
- Cold working: Suitable for bending and forming, followed by aging to increase strength.
- Surface treatment: Produces a smooth, bright surface after processing, making it an ideal choice for aesthetic components.
2011 Aluminum Round Bar Available Forms and Sourcing
- Temper: T3, T6, T8 (most common).
- Shapes: Round, hexagonal, square, and flat bars.
Comparison with Other Alloys
- 6061 Aluminum: Offers better corrosion resistance but has poorer machinability.
- 6262 T9: A corrosion-resistant alternative suitable for environments where 2011’s oxidation resistance is insufficient.
For more detailed information on specifications or sourcing, please refer to the supplier datasheets or standards such as ASTM B211 and DIN 3.1056.
