2011 aluminum alloy is a 2000 series free-machining aluminum grade alloyed primarily with copper, lead, and bismuth. Known for its outstanding machinability—often rated at 90% or above on the aluminum machinability scale—2011 produces short, brittle chips and an excellent surface finish in screw-machine and CNC operations. Linsy supplies 2011 aluminum bar, wire, and tube in tempers T3, T4, T6, and T8, with custom diameters, cut-to-length sizes, and MTC reports available.
Moduli disponibili: round bar / hex bar / wire / tube
Temperamenti comuni: T3 / T4 / T6 / T8
Supporto per l'elaborazione: CNC machining / precision turning / cut-to-length / surface finishing
Documenti di qualità: Rapporto MTC allegato a ogni ordine, test SGS su richiesta
2011 aluminum alloy (UNS A92011) is a 2000 series wrought aluminum grade specifically designed for free-machining applications. Alloyed primarily with copper (Cu), lead (Pb), and bismuth (Bi), 2011 delivers the best machinability of any standard aluminum grade—typically rated above 90% on the aluminum machinability scale. This means it machines at higher speeds with lower tool wear and produces clean, short, brittle chips that break away cleanly during cutting, making it the preferred choice for high-volume screw-machine and CNC turning operations.
2011 is typically supplied in T3 temper (cold-worked and naturally aged), but T4, T6, and T8 tempers are also available for higher strength or specific machinability characteristics. Its primary product forms are bar, wire, and tube—the shapes most commonly used for fasteners, connectors, and precision turned components.
Linsy supplies 2011 aluminum in the standard bar, wire, and tube forms most commonly demanded by precision machining buyers. Specific diameters and lengths can be customized to your job requirements.
| Forma | Temperamento | Diametro (mm) | Lunghezza (mm) |
|---|---|---|---|
| 2011 Round Bar | T3, T4, T6, T8 | 3 – 200 | 1000 – 6000 |
| 2011 Hex Bar | T3, T4, T6, T8 | 6 – 60 | 1000 – 6000 |
| Forma | Temperamento | Diametro (mm) | Peso della bobina |
|---|---|---|---|
| 2011 Wire | T3, T4, T6, T8 | 0.8 – 12.0 | Min. 50 kg |
| Forma | Temperamento | Diametro esterno (mm) | Spessore della parete (mm) | Lunghezza (mm) |
|---|---|---|---|---|
| 2011 Tube (Seamless) | T3, T4, T6, T8 | 6 – 150 | 1 – 20 | 1000 – 6000 |
| Sistema standard | Denominazione |
|---|---|
| UNS | A92011 |
| EN AW | EN AW-2011 / AlCu6BiPb |
| ISO | Al Cu6BiPb |
| AA / SAE | 2011 |
| JIS (Giappone) | A2011 |
| GB / Cinese | 2011 |
Norme comunemente applicabili:
Typical composition limits per ASTM B210 / B211 (weight %):
| Elemento | Min % | Max % |
|---|---|---|
| Rame (Cu) | 5.00 | 6.00 |
| Piombo (Pb) | 0.20 | 0.60 |
| Bismuto (Bi) | 0.20 | 0.60 |
| Silicio (Si) | — | 0.40 |
| Ferro (Fe) | — | 0.70 |
| Zinco (Zn) | — | 0.30 |
| Altri, ciascuno | — | 0.05 |
| Altri, totale | — | 0.15 |
| Alluminio (Al) | Balance (approx. 92.0 – 94.0) | |
Typical values for 2011 aluminum in common tempers. Values are from ASTM B211 and published industry references. Actual properties depend on product form and section thickness.
| Proprietà | T3 | T4 | T6 | T8 |
|---|---|---|---|---|
| Resistenza alla trazione | ≥ 310 MPa | ≥ 280 MPa | ≥ 345 MPa | ≥ 380 MPa |
| Limite di snervamento (0,2%) | ≥ 240 MPa | ≥ 205 MPa | ≥ 275 MPa | ≥ 310 MPa |
| Allungamento a rottura | 10 – 18% | 12 – 18% | 8 – 14% | 6 – 12% |
| Resistenza al taglio | ~ 190 MPa | ~ 170 MPa | ~ 210 MPa | ~ 230 MPa |
| Durezza (Brinell) | ~ 95 | ~ 85 | ~ 105 | ~ 115 |
| Modulo di elasticità | 70 GPa (10,200 ksi) | |||
Each temper offers a different balance between machinability, strength, and formability. All tempers in the 2011 family retain exceptional chip-breaking characteristics, but final mechanical properties vary by condition.
| Temperamento | Il migliore per | Note |
|---|---|---|
| 2011-T3 | General-purpose screw-machine and CNC turning work | Most commonly supplied temper. Cold-worked and naturally aged. Good balance of machinability and moderate strength. |
| 2011-T4 | Parts requiring moderate cold-forming before final machining | Solution heat-treated and naturally aged. Slightly lower strength than T3 but better forming properties. |
| 2011-T6 | Parts requiring higher strength with free-machining characteristics | Solution heat-treated and artificially aged. High strength with machinability somewhat reduced vs T3. |
| 2011-T8 | High-strength precision parts that must maintain dimensional stability | Solution heat-treated, cold-worked, and artificially aged. Highest strength, slightly lower machinability than T3. |
2011 is the highest-rated common aluminum alloy for machinability, typically scored at 90% or above on the machinability scale (with 6061-T6 at approximately 50%). The lead and bismuth additions promote clean chip formation—chips are short and brittle, breaking away consistently during turning, drilling, and milling operations. This means higher feed rates, reduced tool wear, and less downtime compared to machining standard aluminum grades like 6061 or 2024.
Because 2011 produces clean, non-stringy chips and generates low tool friction during cutting, finished parts typically achieve high surface quality directly from the machine spindle. This reduces or eliminates the need for secondary finishing operations, making it cost-effective for high-volume production.
In T6 and T8 conditions, 2011 offers tensile strengths above 345–380 MPa—comparable to mid-strength 6000-series alloys—while retaining its free-machining character. For reference, 2011 in T3 or T6 is roughly 30–40% stronger than 6061 in machinability-adjusted machining applications, because the time saved translates directly to throughput.
2011 contains lead (0.2–0.6%) as an intentional alloying addition to promote machinability. For applications subject to RoHS restrictions, including EU ELV (End of Life Vehicles) or drinking-water contact components, 2011 may not be suitable. For RoHS-compatible free-machining applications, consider 6026 or 6262 aluminum as lead-free alternatives—contact Linsy for guidance.
2011 is specified almost exclusively for parts manufactured on automatic screw machines, CNC lathes, and Swiss-type turning machines. Its application domain is defined by its role as a high-productivity machining grade:
2011 is arguably the easiest aluminum alloy to machine, but a few practical guidelines will help you get the best results:
Il controllo qualità presso Linsy va dalla selezione delle materie prime fino al collaudo del prodotto finito. Ogni ordine viene accompagnato da un MTC (Certificato di analisi dei materiali) rilasciato da Linsy Aluminum al termine della produzione, che riporta i risultati relativi alla composizione chimica e alle proprietà meccaniche del lotto specifico.
Per i clienti che necessitano di una verifica da parte di terzi, i rapporti di prova SGS sono disponibili su richiesta a un costo aggiuntivo. I rapporti SGS disponibili includono:
Linsy Aluminum is a Shenzhen-based aluminum factory with more than 20 years of industry experience, supplying 2011 and other 1000–8000 series alloys to customers across general engineering, automotive, electronics, manufacturing, and precision machining industries.
For your 2011 sourcing, this means:
Use these guides to get more from 2011 aluminum:
2011 is designed for high-speed free-machining applications on automatic screw machines, CNC lathes, and Swiss-type machines. Its major market is precision turned components: fasteners, standoffs, bushings, electrical connectors, and small threaded parts produced in high volumes.
The term “free-machining” refers to the alloy’s ability to be machined at high speeds with excellent chip control and low tool wear. The lead and bismuth alloying additions act as chip breakers—they form microscopic inclusions that cause chips to fracture into small pieces rather than forming long, tangled strings that can jam machines or scratch parts.
No. 2011 is considered non-weldable. The lead and bismuth that give it outstanding machinability also cause severe hot cracking, porosity, and weak fusion zones during welding. If you need a machinable alloy that can be welded, consider 6061 or 6082. If you need a free-machining alloy that must be welded, discuss with our team—there may be alternative alloy options.
2011-T3 is cold-worked and naturally aged—it is the most common temper and offers the best balance of machinability and strength for standard screw-machine work. 2011-T6 is solution heat-treated and artificially aged, yielding higher tensile and yield strength (approx. 345+ MPa vs 310+ MPa), but machinability is slightly lower than T3. For high-volume turning where cycle time matters most, T3 is typically preferred. For parts that need extra mechanical strength post-machining, T6 or T8 may be better choices.
2011 accepts standard anodizing treatments, but the surface finish and color uniformity are typically less consistent than what can be achieved on 6061 or 6063. If cosmetic anodized appearance is important, test a sample before committing to production quantities.
Yes, 2011 contains 0.2–0.6% lead as an intentional alloying addition for machinability. This means 2011 may not comply with RoHS restrictions for certain applications (e.g., consumer electronics sold in the EU, automotive ELV components). For RoHS-compliant free-machining options, 6026 or 6262 aluminum are common alternatives. Contact Linsy for availability and guidance.
2011 machines far better than both 2024 and 7075. On the aluminum machinability scale, 2011 rates approximately 90%, while 2024-T3 rates around 70% and 7075-T6 around 70%. However, 2024 and 7075 are much stronger structural alloys—each about 1.3–1.5 times stronger than 2011-T3. Choose 2011 when machinability and throughput are your priority; choose 2024 or 7075 when ultimate strength is non-negotiable.
2011 is typically supplied as round bar, hex bar, wire, and seamless tube. It is not commonly produced as sheet, plate, or coil, because the alloy’s design purpose is screw-machine and turning work. If your application requires 2011 in a non-standard form, contact Linsy to check feasibility.
For non-stock sizes or custom specifications, typical lead time is 10–60 days depending on alloy, dimensions, processing requirements, and order complexity. In-stock standard specifications can ship faster—contact our team for a specific quote.
Linsy supports low-MOQ custom production for non-stock 2011 items. MOQ varies by form, size, and processing scope; please share your requirements and we will confirm feasibility.
Every order ships with an MTC (Material Test Certificate) issued by Linsy Aluminum after production. Optional SGS third-party test reports are available on request at an additional testing cost.
Yes, samples can be arranged for most standard and custom specifications. Sample cost and lead time depend on size and processing requirements.
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Linsy Aluminum è un fornitore leader di prodotti per la lavorazione dell'alluminio, che serve diversi settori, tra cui quello aerospaziale, dell'ingegneria generale, automobilistico, marittimo, navale e altre applicazioni industriali specializzate.
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