Hoogtepunten
- 2011 aluminum offers uitstekende bewerkbaarheid, making it ideal for high-speed automatic lathe work.
- Zijn treksterkte is moderate, suited to less demanding precision parts.
- Corrosiebestendigheid 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.
Inleiding
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 matige weerstand tegen corrosie, so anodising or coating is common in harsher service. For sourcing detail and 2026 updates, see our ultimate guide to 2011 aluminum.
Wat is een aluminiumlegering uit 2011?
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.
Chemische samenstelling van aluminium in 2011
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.
| Element | Samenstellingsbereik (% in gewicht) | Beschrijving |
|---|---|---|
| Aluminium (Al) | 91.3 - 94.3 | De primaire component, die een lichtgewicht basis vormt met een matige corrosiebestendigheid. |
| Koper (Cu) | 5.0 - 6.0 | Verhoogt de sterkte aanzienlijk, ideaal voor onderdelen met hoge sterkte. |
| Lood (Pb) | 0.2 - 0.6 | Enhances machinability, allowing smooth, high-speed processing. |
| Bismut (Bi) | 0.2 - 0.6 | Verbetert de spaanvorming tijdens het bewerken, waardoor de precisie toeneemt. |
| IJzer (Fe) | 0,7 (max) | Laag gehouden om de integriteit van de legering te behouden en het risico op corrosie te verminderen. |
| Silicium (Si) | 0,4 (max) | Beperkt om optimale bewerkingseigenschappen te garanderen. |
| Zink (Zn) | 0,3 (max) | Minimaal om de sterkte en corrosiebestendigheid niet te beïnvloeden. |
| Overige (per stuk) | 0,05 (max) | Sporenelementen, gecontroleerd om legeringconsistentie te garanderen. |
| Overige (totaal) | 0,15 (max) | Totaal kleine elementen, laag gehouden om de prestaties te behouden. |
This composition maximizes machinability while keeping weight low. Where higher corrosion resistance is needed, alloys such as 6262 T9 are considered superior alternatives.
Belangrijkste fysische eigenschappen en kenmerken
The physical properties of 2011 aluminum make it useful for high-speed, uitstekende bewerkbaarheid applications that also need modest treksterkte. 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.
Algemene toepassingen
Because of its strengths in fabricage en high-speed machining, 2011 aluminum fits many precision industries. Common applications include:
- Onderdelen and trims with clean aesthetic finishes.
- Afwerkingen voor auto's where lightweight machined parts are needed.
- Bevestigingen en fittingen for functional and decorative use.
- Onderdelen 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 Aluminium vs. Andere legeringen
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.
- Hoge sterkte: tensile strength around 350–400 MPa in T3 temper.
- Uitstekende bewerkbaarheid: 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.
| Eigendom | Value / Description |
|---|---|
| Dichtheid | 2,82 g/cm³ |
| Smeltpunt | ~540-640°C |
| Treksterkte (T3-temperatuur) | ~350-400 MPa |
| Opbrengststerkte (T3-temperatuur) | ~300-350 MPa |
| Corrosiebestendigheid | Poor; requires coatings in harsh environments |
| Thermische geleidbaarheid | ~150-170 W/m-K |
| Elektrische geleidbaarheid | ~38-43% IACS |
| Lasbaarheid | Poor; not recommended for welding |
| Vervormbaarheid | Moderate; suited to machining, not complex shapes |
| Thermische uitzettingssnelheid | 22.9 × 10-⁶ /°C |
2011 vs. 2024 vs. 6061 aluminium
Comparing 2011, 2024, and 6061 shows how each fits different jobs.
| Alloy | Belangrijkste kenmerken | Sterkte | Corrosiebestendigheid | Lasbaarheid | Typische toepassingen |
|---|---|---|---|---|---|
| 2011 | Uitstekend bewerkbaar, warmtebehandelbaar, matig sterk | Matig (T3: ~370 MPa) | Slecht | Slecht | Schroefmachine producten, fittingen, precisie onderdelen |
| 2024 | Hoge sterkte, goed bewerkbaar, warmtebehandelbaar | Hoog (T3: ~480 MPa) | Slecht | Slecht | Vliegtuighuiden, structurele onderdelen voor de ruimtevaart |
| 6061 | Veelzijdig, warmtebehandelbaar, evenwichtige sterkte en vervormbaarheid | Matig (T6: ~310 MPa) | Zeer goed | Uitstekend | Constructiedelen, scheepsbeslag, algemeen gebruik |
In summary:
- 2011 aluminium: top machinability for precision screw-machine parts.
- 2024 aluminium: high strength for aerospace structural components.
- 6061 aluminium: versatile and corrosion resistant for general structures.
Choose 2011 for machinable parts, 2024 for strong aerospace uses, and 6061 for flexible, corrosion-resistant structures.
Vergelijking 2011 T3, T6 en T8 Tempers
Temper choice changes the treksterkte and behavior of 2011 at hoge snelheden.
| Temper | Belangrijkste kenmerken | Sterkte | Corrosiebestendigheid | Vervormbaarheid | Typische toepassingen |
|---|---|---|---|---|---|
| 2011 T3 | Oplosgegloeid, koud bewerkt, natuurlijk verouderd, zeer bewerkbaar | Matig (~370 MPa) | Slecht | Goed | Schroefmachine producten, fittingen, precisie onderdelen |
| 2011 T6 | Oplosgegloeid, kunstmatig verouderd, hogere sterkte | Hoog (~400 MPa) | Slecht | Matig | Precisiecomponenten, bevestigingsmiddelen met hoge sterkte |
| 2011 T8 | Oplosgegloeid, koud bewerkt, kunstmatig verouderd, hoogste sterkte | Hoogst (~420 MPa) | Slecht | Onder | Machinaal bewerkte onderdelen met hoge sterkte, lucht- en ruimtevaartfittingen |
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.
Tips voor de inkoop van aluminium in 2011
- Check alloy specifications: Confirm the 2011 aluminium 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- en T8-temperaturen, 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 automatische schroefmachineproducten, bevestigingsmiddelen en ingewikkelde onderdelen 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.
Conclusie
2011 aluminum is a specialist free-machining grade. It machines faster and cleaner than most alternatives, but its slechte corrosiebestendigheid en 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.
Veelgestelde vragen
Waarin verschilt 2011 aluminium van andere aluminiumlegeringen?
2011 stands out for its uitstekende bewerkbaarheid and efficiency at hoge snelheden. Unlike many alloys, it uses lead and bismuth to aid intricate-part production. It offers only moderate corrosiebestendigheid and needs anodising for surface protection.
Kan aluminium uit 2011 worden gelast of warmtebehandeld?
Welding is not recommended because of extremely poor weldability. It does support koude bewerking en kan warmtebehandeld in tempers such as T6 to raise treksterkte, which suits complex machined components.
Is 2011 aluminium geschikt voor onderdelen met een hoge belasting?
While 2011 excels at uitstekende bewerkbaarheid and high-speed work, its treksterkte is lower than many industrial alternatives. It is better suited to precision parts than to fabrication under extreme or long-term stress.
Is 2011 aluminium geschikt voor corrosieve omgevingen?
Because of its matige weerstand tegen corrosie, 2011 is limited in corrosive environments and components usually need anodising. Its uitstekende bewerkbaarheid en koude bewerking make it ideal for short-term or indoor applications.
Hoe is 2011 te vergelijken met 6061 aluminium wat betreft bewerkbaarheid?
2011 aanbiedingen uitstekende bewerkbaarheid, beating 6061 for intricate and repetitive high-speed work. 6061 gives better corrosiebestendigheid and structural use, while 2011 remains the preference for precision, efficiency-focused tooling.
Welke hardheid van 2011 aluminium is het beste voor machinale bewerking?
De T6-temperatuur of 2011 is a strong choice for machining, combining good treksterkte with efficient koude bewerking. Its harder surface supports high-speed operation and detailed, repetitive tasks.
