Aluminium alloy 2011 is a high mechanical strength alloy that machines exceptionally well. Often called a Free Machining Alloy or ‘FMA’ it is well suited to use in automatic lathes.

ALLOY DESIGNATIONS

Aluminium alloy 2011, AMS QQ-A-225/3 is covered by Standard BS EN 2100 and has similarities to the following standard designations and specifications:

2011, ISO AlCu6BiPb, 3.1655

UNS A92011,  BS FC1

TEMPER TYPES

The most common tempers for 2011 aluminium are:

• O   - Soft
• T3 - Solution heat treated, cold worked and naturally aged
• T4 - Solution heat treated and naturaly aged to a substantially stable condition. 
• T8 - Solution heat-treated, cold worked and then artificially aged.
• T451 - Solution heat-treated, stress-relieved by controlled stretching and then artificially overaged (between T73 and T76). The products receive no further straightening after stretching.

SUPPLIED FORMS

2011 aluminium is supplied in round bar.

• Round Bar