Austenitic stainless steels and nickel-base superalloys used as exhaust valves in internal combustion diesel engines are subjected to high temperature oxidizing environments in the presence of sulfur bearing condensed phases and ash-forming constituents. The high operating temperatures and diesel engine exhaust gas environment can create conditions for hot corrosion. In this study, the development of an accelerated corrosion test to simulate hot corrosion attack in diesel exhaust valves is presented and the relative hot corrosion resistance of typical exhaust valve materials are evaluated at 760 C and 870 C, exposed for 80 hours is discussed. The test method provides useful comparative data that can aid in diesel exhaust valve alloy selection.