Aluminum 2011

Aluminum 2011 is a high-strength, free-machining aluminum alloy developed specifically for applications requiring excellent machinability and precision. The alloy contains small additions of copper and bismuth, which significantly improve chip formation and tool life during machining operations.

While Aluminum 2011 offers superior machinability compared to most aluminum alloys, it has lower corrosion resistance and weldability. As a result, it is typically used in dry environments where tight tolerances, repeatability, and production efficiency are critical.

Aluminum 2011 is commonly supplied in bar and rod form and is widely used for high-volume CNC machining, automatic screw machine parts, and precision components where machining performance is prioritized over corrosion resistance.

Aluminum 2011 – FAQ

What is Aluminum 2011 used for?

Aluminum 2011 is primarily used for high-speed machining applications such as precision components, fittings, fasteners, bushings, and screw-machine parts where excellent machinability is required.

Why is Aluminum 2011 considered a free-machining alloy?

Aluminum 2011 contains controlled additions of copper and bismuth that improve chip breakage and reduce tool wear. This allows for faster cutting speeds, improved surface finish, and higher production efficiency.

Is Aluminum 2011 heat treatable?

Yes. Aluminum 2011 is a heat-treatable alloy and is commonly supplied in tempers such as T3 or T8, depending on mechanical property requirements.

How does Aluminum 2011 compare to Aluminum 6061?

Compared to Aluminum 6061, Aluminum 2011 offers:

Significantly better machinability
Higher strength in certain tempers
Lower corrosion resistance
Poor weldability

2011 is chosen for machining efficiency, while 6061 is preferred for structural and corrosion-resistant applications.

Is Aluminum 2011 weldable?

No. Aluminum 2011 is generally not recommended for welding due to its alloying elements, which can cause cracking and poor weld quality.

Can Aluminum 2011 be custom cut or processed?

Yes. Aluminum 2011 can be supplied with value-added services including custom cutting, machining, testing, and certification based on application requirements.

Select AMS

AMS Number	Alloy	Type	UNS	Cross Ref. Spec	Misc./Shape
AMS QQ A 225 3	2011	Aluminum	A92011
AMS QQ A 225 3 Bar	2011	Aluminum	A92011	QQ-A-225/3	Bar
AMS QQ A 225 3 Rod	2011	Aluminum	A92011	QQ-A-225/3	Rod
AMS QQ A 225 3 Wire	2011	Aluminum	A92011	QQ-A-225/3	Wire