The steel is a strong impact on working conditions for non-development alternative to the high manganese steel of the new wear-resistant material. It is applicable to various types of abrasive wear resistance of medium hardness, and be used for all kinds of ball mill liners. The steel is based on the Si-Mn steel, adding a third major alloying elements Cr, and then forms the steel of Cr-Mn-Si, which owns high hardness and wear resistance with good toughness and sufficient reserves. It has been widely used in power, mining, machinery, cement and other industries, totally more than 200 companies.