Data Sheets

Aluminium Alloy   |   Commercial Alloy

2011 T3 Rod and Bar

Commercial2011 EN2011

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.

Machining at high speeds produces fine chips that are easily removed. The excellent machining characteristics allow the production of complex and detailed parts. In some circumstances 2011 can replace free machining brass without the need for alterations to tooling.

It has poor corrosion resistance, which means parts made from 2011 tend to be anodised to provide additional surface protection.

When higher levels of corrosion resistance are required, 6262 T9 may be a suitable replacement.

Applications - 2011 is typically used in applications that require parts manufactured by repetition machining. These applications may include:
Appliance parts & trim
Automotive trim
Fasteners and fittings
Ordnance


Chemical Composition

BS EN 573-3:2009
Alloy 2011
Chemical Element % Present
Aluminium (Al) balance
Other (Each) 0.05 max
Others (Total) 0.15 max
Zinc (Zn) 0.3 max
Silicon (Si) 0.4 max
Lead (Pb) 0.2 - 0.4
Bismuth (Bi) 0.2 - 0.6
Iron (Fe) 0.7 max
Copper (Cu) 5 - 6

Alloy Designations

Aluminium alloy 2011 also corresponds to the following standard designations and specifications but may not be a direct equivalent :

AlCu6BiPb

FC1

A92011

CB60

3.1655  

AlCuBiPb:


Temper Types

The most common temper for 2011 aluminium bar - extruded and drawn - is:

  • T3

Supplied Forms

  • Bar

Generic Physical Properties

Physical Property Value
Density 2.83 g/cm³
Modulus of Elasticity 70 GPa
Electrical Resistivity 0.038 x10^-6 Ω .m
Thermal Conductivity 151 W/m.K
Thermal Expansion 22.9 x10^-6 /K
Melting Point 535 °C

Mechanical Properties

BS EN 755-2:2008
Extruded and Drawn Bar - Up to 200mm Dia. or 60mm A/F
Mechanical Property Value
Proof Stress 270 Min MPa
Tensile Strength 320 Min MPa
Hardness Brinell 90 Min HB
Elongation A 10 Min %

Properties above are for material in the T4 condition


Weldability

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.

Fabrication

Process                          Rating

Workability - Cold             Fair

Machinability                    Excellent

Weldability – Gas              Poor

Weldability – Arc               Poor

Weldability – Resistance    Poor

Brazability                        Poor

Solderability                      Fair