Aluminum 5083 welding

It is not usual to do any post heat treatment, This metal can only be hardened by cold working.

Excessive heat input during welding should be avoided as this does cause a slightly courser grain structure in the weld zone..Avoid double welding in the same area. There can be a loss of 50% of tensile strength in HAZ

Welding processes for joining components made of 5083-H321 aluminium alloy is acceptable. However local loads in the vicinity of the weldment should be kept as low as possible as there appears to be a significant reduction in static strength due to the weld process. Retaining the weld reinforcement at the joint could be one option to reduce local loads but stress concentration at the reinforcement root should be carefully controlled in order to avoid possible fatigue crack initiation.