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In this study, aluminium AA6063 6mm thickness plate were welded by friction stir butt joint, the friction stir welding process is an emerging solid state joining processes in which the material that is being welded does not melt. This process uses a non consumable tool to generate a welding. The welding parameter such as tool rotational speed, welding speed, axial force and tool pin profile play a major role in deciding the joint properties. Two different tool pin profiles (Square and pentagon) have been used to fabricate the joints at constant rotational speed 1500rpm. The effect of welding parameter was evaluated in different mechanical properties of hardness distribution and tensile properties for axial weld zone.

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