Wichtigste Highlights
- 2011 aluminum offers hervorragende Zerspanbarkeit, making it ideal for high-speed automatic lathe work.
- Seine Zugfestigkeit is moderate, suited to less demanding precision parts.
- Korrosionsbeständigkeit 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.
Einführung
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 mäßige Korrosionsbeständigkeit, so anodising or coating is common in harsher service. For sourcing detail and 2026 updates, see our ultimate guide to 2011 aluminum.
Was ist eine Aluminiumlegierung 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 Zusammensetzung von Aluminium 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 | Zusammensetzung Bereich (% nach Gewicht) | Beschreibung |
|---|---|---|
| Aluminium (Al) | 91.3 - 94.3 | Die Hauptkomponente, die eine leichte Basis mit mäßiger Korrosionsbeständigkeit bietet. |
| Kupfer (Cu) | 5.0 - 6.0 | Erhöht die Festigkeit beträchtlich, ideal für hochfeste Teile. |
| Blei (Pb) | 0.2 - 0.6 | Enhances machinability, allowing smooth, high-speed processing. |
| Bismut (Bi) | 0.2 - 0.6 | Verbessert die Spanbildung bei der Bearbeitung und erhöht die Präzision. |
| Eisen (Fe) | 0,7 (maximal) | Niedrig gehalten, um die Integrität der Legierung zu erhalten und das Korrosionsrisiko zu verringern. |
| Silizium (Si) | 0,4 (maximal) | Begrenzt, um optimale Bearbeitungseigenschaften zu gewährleisten. |
| Zink (Zn) | 0,3 (maximal) | Minimal, um die Festigkeit und Korrosionsbeständigkeit nicht zu beeinträchtigen. |
| Sonstige (jeweils) | 0,05 (maximal) | Spurenelemente, kontrolliert, um die Konsistenz der Legierung zu gewährleisten. |
| Sonstige (insgesamt) | 0,15 (maximal) | Insgesamt geringfügige Elemente, die niedrig gehalten werden, um die Leistung zu erhalten. |
This composition maximizes machinability while keeping weight low. Where higher corrosion resistance is needed, alloys such as 6262 T9 are considered superior alternatives.
Wichtige physikalische Eigenschaften und Merkmale
The physical properties of 2011 aluminum make it useful for high-speed, hervorragende Zerspanbarkeit applications that also need modest Zugfestigkeit. 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.
Gemeinsame Anwendungen
Because of its strengths in Fabrikation und high-speed machining, 2011 aluminum fits many precision industries. Common applications include:
- Teile für Haushaltsgeräte and trims with clean aesthetic finishes.
- Automobilverkleidungen where lightweight machined parts are needed.
- Verbindungselemente und Beschläge for functional and decorative use.
- Ordnungsgemäße Teile 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 Legierungen
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.
- Hohe Festigkeit: tensile strength around 350–400 MPa in T3 temper.
- Ausgezeichnete Bearbeitbarkeit: 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.
| Eigentum | Value / Description |
|---|---|
| Dichte | 2,82 g/cm³ |
| Schmelzpunkt | ~540-640°C |
| Zugfestigkeit (T3-Zustand) | ~350-400 MPa |
| Streckgrenze (T3-Zustand) | ~300-350 MPa |
| Korrosionsbeständigkeit | Poor; requires coatings in harsh environments |
| Wärmeleitfähigkeit | ~150-170 W/m-K |
| Elektrische Leitfähigkeit | ~38-43% IACS |
| Schweißeignung | Poor; not recommended for welding |
| Verformbarkeit | Moderate; suited to machining, not complex shapes |
| Thermische Ausdehnungsrate | 22.9 × 10-⁶ /°C |
2011 vs. 2024 vs. 6061 Aluminium
Comparing 2011, 2024, and 6061 shows how each fits different jobs.
| Legierung | Wesentliche Merkmale | Stärke | Korrosionsbeständigkeit | Schweißeignung | Typische Anwendungen |
|---|---|---|---|---|---|
| 2011 | Hervorragende Bearbeitbarkeit, wärmebehandelbar, mittlere Festigkeit | Mäßig (T3: ~370 MPa) | Schlecht | Schlecht | Schraubmaschinenprodukte, Beschläge, Präzisionsteile |
| 2024 | Hohe Festigkeit, gute Bearbeitbarkeit, wärmebehandelbar | Hoch (T3: ~480 MPa) | Schlecht | Schlecht | Luftfahrthaut, Strukturteile für die Luft- und Raumfahrt |
| 6061 | Vielseitig, wärmebehandelbar, ausgewogene Festigkeit und Umformbarkeit | Mäßig (T6: ~310 MPa) | Sehr gut | Ausgezeichnet | Strukturelle Komponenten, Schiffsarmaturen, allgemeine Verwendung |
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.
T3-, T6- und T8-Temperaturen 2011 im Vergleich
Temper choice changes the Zugfestigkeit and behavior of 2011 at hohe Geschwindigkeiten.
| Temperament | Wesentliche Merkmale | Stärke | Korrosionsbeständigkeit | Verformbarkeit | Typische Anwendungen |
|---|---|---|---|---|---|
| 2011 T3 | lösungsgeglüht, kaltverformt, natürlich gealtert, hohe Zerspanbarkeit | Mäßig (~370 MPa) | Schlecht | Gut | Schraubmaschinenprodukte, Beschläge, Präzisionsteile |
| 2011 T6 | Lösungsgeglüht, künstlich gealtert, höhere Festigkeit | Hoch (~400 MPa) | Schlecht | Mäßig | Hochfeste Präzisionskomponenten, Verbindungselemente |
| 2011 T8 | lösungsgeglüht, kaltverformt, künstlich gealtert, höchste Festigkeit | Höchste (~420 MPa) | Schlecht | Unter | Hochfeste bearbeitete Teile, Fittings für die Luft- und Raumfahrt |
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.
Tipps für die Beschaffung von Aluminium 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 und T8 Temperamente, 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 Schraubmaschinenprodukte, Verbindungselemente und komplizierte Teile 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.
Schlussfolgerung
2011 aluminum is a specialist free-machining grade. It machines faster and cleaner than most alternatives, but its geringe Korrosionsbeständigkeit und 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.
Häufig gestellte Fragen
Wodurch unterscheidet sich Aluminium 2011 von anderen Aluminiumlegierungen?
2011 stands out for its hervorragende Zerspanbarkeit and efficiency at hohe Geschwindigkeiten. Unlike many alloys, it uses lead and bismuth to aid intricate-part production. It offers only moderate Korrosionsbeständigkeit and needs anodising for surface protection.
Kann Aluminium 2011 geschweißt oder wärmebehandelt werden?
Welding is not recommended because of extremely poor weldability. It does support Kaltumformung und können wärmebehandelt in tempers such as T6 to raise Zugfestigkeit, which suits complex machined components.
Ist Aluminium 2011 für hoch beanspruchte Bauteile geeignet?
While 2011 excels at hervorragende Zerspanbarkeit and high-speed work, its Zugfestigkeit is lower than many industrial alternatives. It is better suited to precision parts than to fabrication under extreme or long-term stress.
Ist Aluminium 2011 für korrosive Umgebungen geeignet?
Because of its mäßige Korrosionsbeständigkeit, 2011 is limited in corrosive environments and components usually need anodising. Its hervorragende Zerspanbarkeit und Kaltumformung make it ideal for short-term or indoor applications.
Wie lässt sich 2011 im Vergleich zu 6061 Aluminium bearbeiten?
2011 Angebote hervorragende Zerspanbarkeit, beating 6061 for intricate and repetitive high-speed work. 6061 gives better Korrosionsbeständigkeit and structural use, while 2011 remains the preference for precision, efficiency-focused tooling.
Welcher Zustand von Aluminium 2011 ist für die Bearbeitung am besten geeignet?
Die T6 Temperament of 2011 is a strong choice for machining, combining good Zugfestigkeit with efficient Kaltumformung. Its harder surface supports high-speed operation and detailed, repetitive tasks.
