The 6061 aluminum coil is a general purpose alloy that’s made with silicon and magnesium. It has great resistance to corrosion, higher than other heat treated aluminums, but has lower strength. It has great machinability and forming properties. It can be easily welded and offers great joining characteristics. This aluminum alloy can be anodized and can have other coatings applied. The electrical conductivity of this metal is 40 percent of copper.
It’s common for 6061 aluminum to be used for structural components, worm gears, electrical connectors, electrical fittings, marine fittings and hardware, marine components and for heavy duty structures that need good resistance to corrosion and strength-to-weight ratio. When in the annealed state, this metal can be cold worked using a variety of standard methods. For instance, it can be deep drawn, stamped, drilled, tapped, cut and bent.
Forging this alloy can be done using a temperature set between 750 and 900 degrees Fahrenheit. Temperatures to use for hot working should be between 500 and 700 degrees Fahrenheit. Any common welding technique can be used for this metal. If annealing is needed, it should be performed continuously at 775 degrees Fahrenheit for between two and three hours, then provide controlled cooling at 50 degrees Fahrenheit per hour, then down to 500 degrees Fahrenheit before air cooling. Aging precipitation heat treatment can also be performed on this grade of aluminum, which should be performed at a 350 degrees Fahrenheit for eight hours before air cooling. This will give it a T6 temper. Heat treatment is another method that can be used to form this alloy. It is recommended that 990 degrees Fahrenheit be used for a long enough time to allow the metal to thoroughly heat, then water quench.