Friction Stir welding is a solid state joining process of using without any filler material. In this work, two base materials likely Al-MMC’s are used namely Silicon Carbide and Zirconium di-Boride are used. Hardness Rockwell Value and Tensile Strength Tests are evaluated to the various tool material respect to Al-ZrB2 and Al-SiC. Threaded Cylinder Tool made of the materials likely OHNS, HCHCr, H13 are carried out in the process with D/d Ratio are used. The process is carried out with three different tool materials and two different base material mainly aluminium reinforced Zirconium diboride (Al-ZrB2) and Silicon Carbide (Al-SiC). The Micrograph of each four zones for the tool material and base material is shown. This paper mainly focusing on which the tool material shows a maximum tensile and hardness value for two base materials.