In order to investigate the ductility of stainless clad steel with various clad ratios and clad arrangements, eight tests for the notch sensitivity of steel were performed, and clad ratios were varied in five stages, zero (mild steel), 1/7, 1/3, 1 and infinite (stainless steel) and clad arrengements were varied in three types, single type, double type and sandwich type. Effect of clad ratio and clad arrangement on various transition temperature can be seen in Table 3 and 4. In all tests performed, clad ratio and clad arrangement affects the ductility of stainless clad steel and higher clad ratio indicated more ductility and sandwich type clad steel had highest ductility in the three clad arrangement.