Hot Tensile Test (HTT) is the method of testing the material properties at high temperature. High-temperature properties of materials are a vital concern in many applications such as power generation plant, aerospace, and automotives. Based on applications, many components like turbine blades, piston, valves, cylinder head, etc are subjected to high temperature; this high temperature will induced thermal stress which causes failure of components. So it is important to study the effect of high temperature on strength of material. This paper will focused on effect of high temperature & strain rate on tensile strength, microstructure of aluminium alloy by using hot tensile test.