主要亮点
- 2011 aluminum offers 出色的机加工性能, making it ideal for high-speed automatic lathe work.
- 其 拉伸强度 is moderate, suited to less demanding precision parts.
- 耐腐蚀性 is poor, so protective coatings or anodising are usually required.
- Lead and bismuth additions improve chip breaking for repetitive machining.
- It is not weldable, which limits it to machined or bolted assemblies.
The sections below explain 2011 aluminum in detail, from composition to temper selection.
导言
2011 aluminum alloy is a 2000-series free-machining grade built for high-speed precision machining. It produces fine, easily cleared chips and a good surface finish on automatic lathes, which is why it is often called a “Free Machining Alloy.” Like other 2000-series grades it offers only 中等耐腐蚀性, so anodising or coating is common in harsher service. For sourcing detail and 2026 updates, see our ultimate guide to 2011 aluminum.
什么是 2011 铝合金？
2011 aluminum is a copper-based, free-machining alloy designed for intricate and repetitive screw-machine work. Copper (5.0%–6.0%) is the main strengthening element, while lead and bismuth (0.2%–0.6% each) improve machinability rather than strength. It is a practical choice when the priority is chip control and cycle time, not corrosion performance. It is commonly stocked as bars, rods, and profiles in tempers such as T3 and T8.
2011 年铝的化学成分
2011 is a 2000-series free-machining alloy. Copper raises strength, while lead and bismuth aid machinability. The table below lists typical composition ranges by weight.
| 要素 | 成分范围（按重量计为 %） | 说明 |
|---|---|---|
| 铝 (Al) | 91.3 - 94.3 | 主要成分，提供具有适度耐腐蚀性的轻质底座。 |
| 铜 (Cu) | 5.0 - 6.0 | 显著提高强度，是高强度零件的理想选择。 |
| 铅 (Pb) | 0.2 - 0.6 | Enhances machinability, allowing smooth, high-speed processing. |
| 铋 (Bi) | 0.2 - 0.6 | 改善加工过程中的切屑形成，提高精度。 |
| 铁（Fe） | 0.7（最大值） | 保持低浓度，以保持合金完整性并降低腐蚀风险。 |
| 硅 (Si) | 0.4（最大值） | 有限，以确保最佳加工性能。 |
| 锌 (Zn) | 0.3（最大值） | 尽量减少，以免影响强度和耐腐蚀性。 |
| 其他（每项） | 0.05（最大值） | 痕量元素，受控以确保合金的一致性。 |
| 其他（共计） | 0.15（最大值） | 次要元素总量少，以保持性能。 |
This composition maximizes machinability while keeping weight low. Where higher corrosion resistance is needed, alloys such as 6262 T9 are considered superior alternatives.
主要物理特性和特征
The physical properties of 2011 aluminum make it useful for high-speed, 出色的机加工性能 applications that also need modest 拉伸强度. It has a density of 2.83 g/cm³, which keeps parts lightweight yet durable.
Its modulus of elasticity (70 GPa) gives reliable stability under moderate stress, while its thermal expansion coefficient (22.9×10⁻⁶/K) suits temperature-varying environments. Typical tensile strength is 310 MPa minimum and proof stress 230 MPa minimum.
Corrosion resistance is moderate, so anodising is recommended for some environments. The Brinell hardness of 110 HB supports high-speed operations that generate fine, easy-to-remove chips.
常见应用
Because of its strengths in 制造 和 high-speed machining, 2011 aluminum fits many precision industries. Common applications include:
- 电器配件 and trims with clean aesthetic finishes.
- 汽车饰件 where lightweight machined parts are needed.
- 紧固件和配件 for functional and decorative use.
- 军械部件 that demand durability and repeatability.
These uses rely on the alloy’s machinability and ability to produce detailed components efficiently, though anodising is needed in corrosive environments.
2011 铝与其他合金对比
2011 is a high-strength material built for precision machining and consistent components.
Its main characteristics are:
- Lightweight density: about 2.82 g/cm³, light for its strength.
- 高强度: tensile strength around 350–400 MPa in T3 temper.
- 卓越的机加工性能: easy to cut and shape for precision parts.
- Poor corrosion resistance: needs coatings in harsh or wet environments.
- Limited weldability: not suitable for welding; use machined or bolted assemblies.
| 财产 | Value / Description |
|---|---|
| 密度 | 2.82 克/立方厘米 |
| 熔点 | ~540-640°C |
| 拉伸强度（T3 温度） | ~350-400 兆帕 |
| 屈服强度（T3 温度） | ~300-350 兆帕 |
| 耐腐蚀性 | Poor; requires coatings in harsh environments |
| 导热性 | ~150-170 W/m-K |
| 导电性 | ~38-43% IACS |
| 焊接性 | Poor; not recommended for welding |
| 成型性 | Moderate; suited to machining, not complex shapes |
| 热膨胀率 | 22.9 × 10-⁶ /°C |
2011 与 2024 与 6061 铝对比
Comparing 2011, 2024, and 6061 shows how each fits different jobs.
| 合金 | 主要特点 | 实力 | 耐腐蚀性 | 焊接性 | 典型应用 |
|---|---|---|---|---|---|
| 2011 | 机加工性能优异，可热处理，强度适中 | 中度（T3：~370 兆帕） | 贫穷 | 贫穷 | 螺杆机械产品、配件、精密零件 |
| 2024 | 强度高、机加工性能好、可热处理 | 高（T3： ~480 兆帕） | 贫穷 | 贫穷 | 飞机蒙皮、航空航天结构件 |
| 6061 | 用途广泛、可热处理、强度和成型性均衡 | 中度（T6：~310 兆帕） | 非常好 | 优秀 | 结构部件、船用配件、一般用途 |
In summary:
- 2011 铝材: top machinability for precision screw-machine parts.
- 2024 铝: high strength for aerospace structural components.
- 6061 铝: versatile and corrosion resistant for general structures.
Choose 2011 for machinable parts, 2024 for strong aerospace uses, and 6061 for flexible, corrosion-resistant structures.
2011 年 T3、T6 和 T8 温度比较
Temper choice changes the 拉伸强度 and behavior of 2011 at 高速度.
| 脾气 | 主要特点 | 实力 | 耐腐蚀性 | 成型性 | 典型应用 |
|---|---|---|---|---|---|
| 2011 T3 | 固溶热处理、冷加工、自然老化、高切削性 | 中等（~370 兆帕） | 贫穷 | 良好 | 螺杆机械产品、配件、精密零件 |
| 2011 T6 | 固溶热处理，人工老化，强度更高 | 高（~400 兆帕） | 贫穷 | 中度 | 高强度精密部件、紧固件 |
| 2011 T8 | 固溶热处理，冷加工，人工老化，最高强度 | 最高（~420 兆帕） | 贫穷 | 较低 | 高强度机加工部件、航空航天配件 |
2011 T3 offers a balance for general machining with good surface finishes. 2011 T6 is heat-treated and artificially aged for enhanced strength under stress. 2011 T8 is the hardest option, supporting intricate parts at high speeds.
Selecting the right temper depends on the application. Under rigorous conditions, T6 or T8 outperform T3 where higher strength or finer detailing is required.
采购 2011 年铝材的技巧
- Check alloy specifications: Confirm the 2011 铝材 meets precise machining standards. Linsy Aluminum supplies 2011 that conforms to ASTM B211, ensuring the right chemical composition for free machining.
- Confirm temper availability: Verify the supplier stocks the temper you need. Linsy Aluminum supplies 2011 in T3 和 T8 温度计, known for excellent machinability and chip-breaking behavior.
- Match application needs: Work with suppliers experienced in high-volume machining. Linsy Aluminum specializes in 2011 for 自动螺丝机产品、紧固件和复杂部件 that need superior chip control.
- Assess machinability: Look for consistent chip formation and reduced tool wear. Linsy Aluminum’s 2011 is engineered for outstanding machinability, shortening cycle times and raising efficiency.
- Ensure reliable supply: Choose a supplier with consistent quality and on-time delivery. Linsy Aluminum provides global distribution and dedicated technical support so production runs smoothly.
结论
2011 aluminum is a specialist free-machining grade. It machines faster and cleaner than most alternatives, but its 耐腐蚀性差 和 limited weldability make it best for indoor precision screw-machine parts rather than structural or corrosive-service components.
Why choose Linsy for 2011 aluminum? Linsy Aluminum is a trusted, professional supplier of certified 2011 stock that conforms to ISO 9001, ASTM B211, QQ-A-225/3, and EN standards. With 20 years of experience and 300,000 tons of annual production capacity, Linsy supplies 2011 in T3 and T8 tempers with custom dimensions, low MOQs, and global delivery to 20+ countries plus responsive technical support.
Ready to source 2011 for your next machining run? Visit the 2011 aluminum alloy product page to review stock forms and tempers and request a quote.
常见问题
2011 年铝材与其他铝合金有何不同？
2011 stands out for its 出色的机加工性能 and efficiency at 高速度. Unlike many alloys, it uses lead and bismuth to aid intricate-part production. It offers only moderate 耐腐蚀性 and needs anodising for surface protection.
2011 年的铝材能否进行焊接或热处理？
Welding is not recommended because of extremely poor weldability. It does support 冷加工 并可 热处理 in tempers such as T6 to raise 拉伸强度, which suits complex machined components.
2011 年的铝材是否适用于高应力部件？
While 2011 excels at 出色的机加工性能 and high-speed work, its 拉伸强度 is lower than many industrial alternatives. It is better suited to precision parts than to fabrication under extreme or long-term stress.
2011 年铝材是否适用于腐蚀性环境？
Because of its 中等耐腐蚀性, 2011 is limited in corrosive environments and components usually need anodising. Its 出色的机加工性能 和 冷加工 make it ideal for short-term or indoor applications.
2011 与 6061 铝的可加工性相比如何？
2011 年报价 出色的机加工性能, beating 6061 for intricate and repetitive high-speed work. 6061 gives better 耐腐蚀性 and structural use, while 2011 remains the preference for precision, efficiency-focused tooling.
2011 年哪种铝材最适合机加工？
"(《世界人权宣言》) T6 回火 of 2011 is a strong choice for machining, combining good 拉伸强度 with efficient 冷加工. Its harder surface supports high-speed operation and detailed, repetitive tasks.
