A variety of damping steels have been developed in recent years for construction purposes. Ferritic and martensitic high-damping steels are the most important groups of damping steels. In the former case, damping is based on magnetoelasticity and in the latter case damping is mainly based on dissipative motion of the interfaces between martensite and austenite phases. Damping properties of two steels of both groups were compared in this report. Compositions of the ferritic steels were Fe-12Cr-3Mo and Fe-2.5Al-0.5Si, and compositions of the martensitic steels were Fe-17.5Mn and Fe-13.7Mn-0.2N. Damping properties of all of those steels were good at room temperature. The highest damping capacity was in alloy Fe-13.7Mn-0.2N. This alloy is the most suitable of these steels to engineering applications because its mechanical properties are better than those of the other steels studied.
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