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QQ A-200/8, ASTM-B-221

Principal Design Features
Square Bar (6061-T6511) is an extruded aluminum bar product that is very versatile and has a wide range of applications. This alloy combines corrosion resistance with high strength making it popular for a wide variety of uses. It has excellent finishing characteristics and will anodize well.

Used for general structural fabrication purposes. 6061-T6511 is commonly used for scaffolding, ship construction, transmission towers, truck trailers, machine parts, braces and bracketing applications.

Machinability for 6061-T6511 is considered good for this alloy.


6061-T6511 is readily weldable using common welding techniques.

Heat Treatment
6061-T6511 is heat treatable. .

For more technical information on this product, download the Product Data Sheet at the top of the page or contact our friendly professional sales team for assistance.
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Item #




N/A 1/2 x 1/2 N/A 12 ft N/A .298
N/A 3/4 x 3/4 N/A 12 ft N/A .661
N/A 1 x 1 N/A 12 ft N/A 1.176
N/A 1 1/4 x 1 1/4 N/A 12 ft N/A 1.874
N/A 1 1/2 x 1 1/2 N/A 12 ft N/A 2.745
N/A 2 x 2 N/A 12 ft N/A 4.80
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