The erosion of several commercial piping steels by coal-solvent slurries was investigated at room and elevated temperatures. The liquid solvents used; kerosene, creosote oil and anthracene oil, had different viscosities that resulted in marked differences in the erosivity of the slurries. The effects of the mechanical properties and compositions of the steel alloys were related to their erosion behavior. The effect on the erosion of steel alloys of the impingement angle of the slurry was determined and related to the viscosity and lubricity of the slurry carrier liquids. The effect of heat treatment of low alloy steels on their erosion rates was determined.

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