3Q MACHINING has rich experience for machining aluminum alloy 2011 parts with high precision, we can machine intricate parts on our CNC Lathe machines and CNC turning centers. Aluminum alloy 2011 has the highest machinability of all aluminum alloys, suitable for complex and detailed parts. Considered a free-machining alloy (FMA), it can be quickly machined to very close tolerances and produces an excellent surface finish. Aluminum 2011 is a great economical choice due to its machinability and production of fine, easily removable chips. Aluminum 2011 is the standard for relative machinability compared to all other aluminum alloys. It can be forged or hot worked but is not ideal for welding or soldering. 2011 can be heat treated, annealed, aged, and tempered. It can be anodized but results in a darker and less corrosion resistant finish than Aluminum 6061.
Aluminum 2011 Machining Capability
- CNC MILLING
- CNC TURNING
- CNC LATHE
Aluminum 2011 Applications
Aluminium alloy 2011 is used in applications that require parts manufactured by repetition machining. These applications may include:
- Appliance parts & trim
- Automotive trim
- Fasteners and fittings
- Ordnance
Noted:
Welding: Aluminium alloy 2011 has extremely poor weldability and thus welding is not recommended. However, as it is used for machined parts there is rarely a need to weld this alloy.
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Common Material Comparison
| Type | General Characteristics | Alloy | Common Applications | Tolerances for 1/2″ Dia. |
| Steel | Designed for excellent machinability. Case hard only | 12L14 | Endless commercial products; probably more pounds used in turned products than any other material | Cold drawn |
| 0 | ||||
| Stainless Steel | Designed for machining, non-magnetic | 303 | Electronic hardware, automotive, aerospace, medical instruments, and many applications requiring corrosion resistance | Cold finished |
| +/- .002 | ||||
| Brass | Strength, corrosion and wear resistance, and excellent machinability | C35300 | Well suited for parts with knurling or threading | +/-.0015 |
| Aluminum | Designed for machining | 2011 | Electronic hardware, endless commercial products | Cold finish |
| +/-.0015 | ||||
| Titanium | High strength, light weight, good bio-compatibility | Ti-6Al-4VEli | Medical implants | Ground & polished |
| +/-.002 |
Table 1. Chemical composition for aluminium alloy 2011
| Element | % Present |
| Si | 0.40% |
| Fe | 0.70% |
| Cu | 5.0-6.0% |
| Pb | 0.2-0.6% |
| Bi | 0.2-0.6% |
| Zn | 0.30% |
| Other | 0.15% |
| Al | Balance |
Table 2 (a). Mechanical properties for aluminium alloy 2011 T4
| Property | Value |
| Proof Stress | 125 Min MPa |
| Tensile Strength | 275 Min MPa |
| Elongation A50 mm | 12 min % |
| Hardness Brinell | 95 HB |
| Elongation A | 14 min % |
| *Properties above are for material in the T4 condition | |
Table 3. Fabrication response for aluminium alloy 2011
| Process | Rating |
| Workability – Cold | Fair |
| Machinability | Excellent |
| Weldability – Gas | Poor |
| Weldability – Arc | Poor |
| Weldability – Resistance | Poor |
| Brazability | Poor |
| Solderability | Fair |
