2011 aluminium alloy is a heat treatable high strength alloy that machines exceptionally well due to its high copper content. Often called a Free Machining Alloy or ‘FMA’, 2011 is used to produce complex and detailed parts such as screws, bolts, fittings, nuts, automatic lathe and screw machine products, fasteners and fittings.
2011 aluminium alloy has poor corrosion resistance; therefore, parts made from 2011 tend to be anodized to provide additional surface protection. When higher levels of corrosion resistance are required, 6262 T9 may be a suitable replacement.
The most common tempers for 2011 aluminium are T3 (solution heat treated, cold worked and naturally aged) and T6 (solution heat treated and artificially aged).
Aluminium Alloy 2011 is supplied in Bar (Hexagon, Round, Square) and Wire.
|Typical Physical Properties of 2011 Aluminium Alloy||Value|
|Modulus of Elasticity||71 GPa|
|Electrical Resistivity||0.045x10-6 O.m|
|Thermal Conductivity||138 W/m.K|
|Thermal Expansion||23x10-6 /K|
|Typical Mechanical Properties of 2011 Aluminium Alloy||Rod & Bar Up to 200mm Dia., 2011 T4||Rod & Bar Up to 75mm Dia., 2011 T6|
|Proof Stress||125 Min MPa||230 Min MPa|
|Tensile Strength||275 Min MPa||310 Min MPa|
|Elongation A50 mm||12 min %||6 min %|
|Hardness Brinell||95 HB||110 HB|
|Elongation A||14 min %||8 min %|
|Chemical Composition of 2011 Aluminium Alloy||% Present|
|Fabrication Response of 2011 Aluminium Alloy||Rating|
|Workability - Cold||Fair|
|Weldability � Gas||Poor|
|Weldability � Arc||Poor|
|Weldability � Resistance||Poor|
|Alloy Designation||US||US Federal||European||UK||Other|
|2011||QQ-A-225/3 2011 Bar, cold drawn||WS 3.1655||BS FC1 2011 Bar & Rod||AlCu(Bi/Mg)Pb|