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6061:

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Disclaimer: The content of this page is for general information only and is not to be used for engineering or design. The content of this material specification page was compiled from available public sources and authorities on material properties. Although we believe the information to be corrrect, Metal Stock, Inc. is not responsible for the accuracy of any of the material specifications and only presents this data as general information for our customers.

6061 is a good, general purpose aluminum alloy with magnesium and silicon as its alloying elements. 6061 has the highest resistance to corrosion of all the heat treated aluminums, but strength is lower. 6061 has a wide range of mechanical properties and is readily machined and has good forming properties. 6061 welds easily, has excellent joining characteristics, and has good acceptance to anodizing and other applied coatings. Electrical conductivity is 40% of copper. 6061 is widely used and has the largest size selection of all aluminum.

6061 Structurals conform to ASTM B308, QQ-A-200/16.
6061 Extruded Bar conforms to ASTM B221, QQ-A-200/3.
6061 Extruded Tube and Pipe conforms to ASTM B241, AMS 4173, AMS 4080, AMS 4082, AMS 4083, WW-T-700/6.
6061-T651 conforms to ASTM BB209, QQ-A-250/11, AMS 4027.

 

General Information about 6061:


APPLICATIONS:

6061 is commonly used for structural components, screw machine parts, frames, brackets, jigs, fixtures, base plates, machine parts, couplings, hydraulic valve bodies, valves and valves parts, fuse parts, gears and shafts, worm gears, pistons, rectifier parts, fasteners, hardware, truck and marine components, marine fittings and hardware, electrical fittings and connectors, hinge pins, magneto parts, brake pistons, hydraulic pistons, appliance fittings, camera lens mounts, bike frames, etc. 6061 is used for heavy duty structures requiring good strength-to-weight ratio with good corrosion resistance. 6061 is easily cold worked and formed in the annealed condition. Cutting, stamping, bending, spinning, deep drawing, drilling, tapping, etc. are all readily accomplished using standard methods.

MACHINING AND WELDING:

6061 in the T4 condition has a machinability rating of 90% when compared to 2011 at 100%. Machines to a high finish.

6061 can be forged at temperatures in the range of 750° to 900°F. Hot working may be done in the temperature range of 500°F to 700°F.

6061 can be readily welded using all the common welding techniques.

HEAT TREATING - Forging, Normalizing, and Annealing:

Solution heat treat at 990°F for adequate time to allow for thorough heating and then water quenched.
Precipitation hardening is done at 320°F for 18 hours and air cool, followed by 350°F for eight hours and air cooled.
Annealing should be done at 775°F for two to three hours at temperature, followed by controlled cooling at 50°F per hour down to 500°F then air cooled.
The aging precipitation heat treatment is done at 350°F for eight hours followed by air cooling. This produces the T6 temper.

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