The 6061 aluminum tee bar is a product that can be easily welded, machined or cold worked. Heat treatment can be used for precipitation hardening when needed. In order to accomplish this, it’s recommended that the metal be placed in 320 degrees F for 18 hours, air cooled, placed in 350 degrees F for another 8 hours, and then air cooled again. To make cold working easier, annealing can be performed on this grade of aluminum. This should be done at 775 degrees F for two to three hours, then a drop in temperature by 50 degrees F is required every hour until it’s down to 500 degrees F, and then air cooled.
This 6061 aluminum product is made with silicon and magnesium. It has the highest level of corrosion resistance in its class of heat treated aluminums. This is why it’s commonly used for applications that require a good weight-to-strength ratio and great resistance. Applications that this aluminum grade can be used for include structural components, marine components, truck components, appliance fittings, electrical connectors, valve parts and gears.
Once in the annealed state, 6061 aluminum can be deep drawn, bent, cut, tapped, drilled and stamped using standard methods of cold working. Any common welding technique can be used on this metal as well.
Other available methods of heat treatment can be done, such as aging precipitation heat treatment and solution heat treatment. Water quenching is required for solution heat treating and all of the other forms need air cooling. T6 temper can be produced through the process of aging precipitation, which requires 8 hours of continuous service at 350 degrees Fahrenheit.