Abstract:Acceleration sensors and strain sensorswere used to study damping properties ofaFe-16Cr-2. 5Mo alloy cantileverbeam and a 18-8 stainless steel cantileverbeam in frequency range of20Hz~ 400Hz under identical experimental conditions. The results indicated that the acceleration and strain of the Fe16Cr-2. 5Mo alloy beam (annealed at 1100e) decaymore significantly comparedwith those of the 18-8 stainless steelone. The results also showed that the acceleration peaks and strain peaks of the Fe-16Cr-2. 5Mo alloy beam are obviously lower than those of the 18-8 stainless steel one.