The effects of different experimental conditions on the dry sliding wear behavior of stainless steel surface produced by plasma transferred arc(PTA) hardfacing process were studied.The wear test was conducted in a pin-on-roller wear testing machine,at constant sliding distance of 1 km.Mathematical models were developed to estimate wear rate incorporating with rotational speed,applied load and roller hardness using statistical tools such as design of experiments,regression analysis and analysis of variance.It is found that the wear resistance of the PTA hardfaced stainless steel surface is better than that of the carbon steel substrate. The effects of different experimental conditions on the dry sliding wear behavior of stainless steel surface produced by plasma transferred arc (PTA) hardfacing process were studied. The wear test was conducted in a pin-on-roller wear testing machine, at constant sliding distance of 1 km. Mathematical models were developed to estimate wear rate incorporating with rotational speed, applied load and roller hardness using statistical tools such as design of experiments, regression analysis and analysis of variance. It is found that the wear resistance of the PTA hardfaced stainless steel surface is better than that of the carbon steel substrate.