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In the present study aluminium 6063 plates were used to evaluate its weldability properties by using two different welding processes such as Friction stir welding (FSW) and Gas tungsten arc welding (GTAW). For both base metal and weld bead tensile properties and Vickers hardness values were evaluated as per ASTM standards. It is found that the ultimate tensile strength in both welding processes significantly decreased as compared to base metal. The Vickers hardness values of welded samples in both welding processes increased marginally. The above mechanical properties were correlated by using optical microscopy.