주요 특징
- 2011 aluminum offers 뛰어난 가공성, making it ideal for high-speed automatic lathe work.
- 그것의 인장 강도 is moderate, suited to less demanding precision parts.
- 내식성 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.
소개
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 중간 정도의 내식성, so anodising or coating is common in harsher service. For sourcing detail and 2026 updates, see our ultimate guide to 2011 aluminum.
2011 알루미늄 합금이란?
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.
2011년 알루미늄의 화학 성분
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.
| 요소 | 구성 범위(중량 기준 %) | 설명 |
|---|---|---|
| 알루미늄(Al) | 91.3 - 94.3 | 주요 구성 요소로, 적당한 내식성을 갖춘 가벼운 베이스를 제공합니다. |
| 구리(Cu) | 5.0 - 6.0 | 강도가 크게 증가하여 고강도 부품에 이상적입니다. |
| 납(Pb) | 0.2 - 0.6 | Enhances machinability, allowing smooth, high-speed processing. |
| 비스무트(Bi) | 0.2 - 0.6 | 가공 중 칩 형성을 개선하여 정밀도를 높입니다. |
| 철(Fe) | 0.7(최대) | 합금 무결성을 유지하고 부식 위험을 줄이기 위해 낮게 유지합니다. |
| 실리콘(Si) | 0.4(최대) | 최적의 가공 특성을 보장하기 위해 제한됩니다. |
| 아연(Zn) | 0.3(최대) | 강도와 내식성에 영향을 미치지 않도록 최소화합니다. |
| 기타(각) | 0.05(최대) | 합금 일관성을 보장하기 위해 제어되는 미량 원소. |
| 기타(합계) | 0.15(최대) | 성능을 유지하기 위해 총 마이너 요소를 낮게 유지합니다. |
This composition maximizes machinability while keeping weight low. Where higher corrosion resistance is needed, alloys such as 6262 T9 are considered superior alternatives.
주요 물리적 속성 및 기능
The physical properties of 2011 aluminum make it useful for high-speed, 뛰어난 가공성 applications that also need modest 인장 강도. 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.
일반적인 애플리케이션
Because of its strengths in 제작 그리고 high-speed machining, 2011 aluminum fits many precision industries. Common applications include:
- 어플라이언스 부품 and trims with clean aesthetic finishes.
- 차량용 트림 where lightweight machined parts are needed.
- 패스너 및 피팅 for functional and decorative use.
- 병기 부품 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 알루미늄과 다른 합금 비교
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.
- 높은 강도: tensile strength around 350–400 MPa in T3 temper.
- 뛰어난 가공성: 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.
| 속성 | Value / Description |
|---|---|
| 밀도 | 2.82g/cm³ |
| 녹는점 | ~540-640°C |
| 인장 강도(T3 온도) | ~350-400 MPa |
| 항복 강도(T3 템퍼) | ~300-350 MPa |
| 내식성 | Poor; requires coatings in harsh environments |
| 열 전도성 | ~150-170W/m-K |
| 전기 전도성 | ~38-43% IACS |
| 용접성 | Poor; not recommended for welding |
| 성형성 | Moderate; suited to machining, not complex shapes |
| 열팽창률 | 22.9 × 10-⁶ /°C |
2011 대 2024 대 6061 알루미늄
Comparing 2011, 2024, and 6061 shows how each fits different jobs.
| 합금 | 주요 특징 | 힘 | 내식성 | 용접성 | 일반적인 애플리케이션 |
|---|---|---|---|---|---|
| 2011 | 우수한 가공성, 열처리 가능, 적당한 강도 | 보통(T3: ~370MPa) | Poor | Poor | 나사 기계 제품, 피팅, 정밀 부품 |
| 2024 | 고강도, 우수한 가공성, 열처리 가능 | 높음(T3: ~480MPa) | Poor | Poor | 항공기 스킨, 항공우주 구조 부품 |
| 6061 | 다용도, 열처리 가능, 균형 잡힌 강도 및 성형성 | 보통(T6: ~310MPa) | 매우 좋음 | 우수 | 구조용 부품, 해양용 피팅, 일반용 |
In summary:
- 2011 알루미늄: top machinability for precision screw-machine parts.
- 2024 알루미늄: high strength for aerospace structural components.
- 6061 알루미늄: versatile and corrosion resistant for general structures.
Choose 2011 for machinable parts, 2024 for strong aerospace uses, and 6061 for flexible, corrosion-resistant structures.
2011년 T3, T6 및 T8 템퍼 비교
Temper choice changes the 인장 강도 and behavior of 2011 at 빠른 속도.
| 성질 | 주요 특징 | 힘 | 내식성 | 성형성 | 일반적인 애플리케이션 |
|---|---|---|---|---|---|
| 2011 T3 | 솔루션 열처리, 냉간 가공, 자연 숙성, 높은 가공성 | 보통(~370MPa) | Poor | Good | 나사 기계 제품, 피팅, 정밀 부품 |
| 2011 T6 | 열처리, 인공 숙성, 고강도 용액 | 높음(~400MPa) | Poor | 보통 | 고강도 정밀 부품, 패스너 |
| 2011 T8 | 솔루션 열처리, 냉간 가공, 인위적 숙성, 최고 강도 | 최고(~420MPa) | Poor | Lower | 고강도 가공 부품, 항공 우주 피팅 |
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.
2011년 알루미늄 소싱을 위한 팁
- Check alloy specifications: Confirm the 2011 알루미늄 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 및 T8 템퍼, 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 자동 스크류 기계 제품, 패스너 및 복잡한 부품 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.
결론
2011 aluminum is a specialist free-machining grade. It machines faster and cleaner than most alternatives, but its 열악한 내식성 그리고 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.
자주 묻는 질문
2011 알루미늄이 다른 알루미늄 합금과 다른 점은 무엇인가요?
2011 stands out for its 뛰어난 가공성 and efficiency at 빠른 속도. Unlike many alloys, it uses lead and bismuth to aid intricate-part production. It offers only moderate 내식성 and needs anodising for surface protection.
2011 알루미늄을 용접하거나 열처리할 수 있나요?
Welding is not recommended because of extremely poor weldability. It does support 냉간 가공 그리고 열처리 in tempers such as T6 to raise 인장 강도, which suits complex machined components.
2011 알루미늄은 고응력 부품에 적합합니까?
While 2011 excels at 뛰어난 가공성 and high-speed work, its 인장 강도 is lower than many industrial alternatives. It is better suited to precision parts than to fabrication under extreme or long-term stress.
2011 알루미늄은 부식성 환경에 적합합니까?
Because of its 중간 정도의 내식성, 2011 is limited in corrosive environments and components usually need anodising. Its 뛰어난 가공성 그리고 냉간 가공 make it ideal for short-term or indoor applications.
2011년은 6061 알루미늄과 가공성 측면에서 어떻게 비교됩니까?
2011 오퍼 뛰어난 가공성, beating 6061 for intricate and repetitive high-speed work. 6061 gives better 내식성 and structural use, while 2011 remains the preference for precision, efficiency-focused tooling.
2011년 알루미늄 중 가공에 가장 적합한 성질은 무엇입니까?
그리고 T6 성질 of 2011 is a strong choice for machining, combining good 인장 강도 with efficient 냉간 가공. Its harder surface supports high-speed operation and detailed, repetitive tasks.
