Aluminum Workshop: Using 4043, 4643 when welding 6061T6
4/12/2014 0183 32In order to approach the unwelded properties of 6061T6, you need to perform a complete heat treatmentthat is, solution heat treatment, quenching, and aging. Remember, the 4043 is becoming heattreatable because of weld dilution from the 6061. In welds in thin material, say, 38 in. or less, there usually is enough weld dilution to make the weld heattreatable. But what happens in thicker ...