Patent ID: 10208369

Abstract:
A high-hardness low-alloy wear-resistant steel sheet and a method of manufacturing the same, which has the chemical compositions (wt %): C: 0.33-0.45%; Si: 0.10-0.50%; Mn: 0.50-1.50%; B: 0.0005-0.0040%; Cr: less than or equal to 1.50%; Mo: less than or equal to 0.80%; Ni: less than or equal to 2.00%; Nb: less than or equal to 0.080%; V: less than or equal to 0.080%; Ti: less than or equal to 0.060%; RE: less than or equal to 0.10%; W: less than or equal to 1.00%; Al: 0.010-0.080%, Ca: 0.0010-0.0080%, N: less than or equal to 0.0080%, O: less than or equal to 0.0080%, H: less than or equal to 0.0004%, P: less than or equal to 0.015%, S: less than or equal to 0.010%, and (Cr/5+Mn/6+50B): more than or equal to 0.20% and less than or equal to 0.50%; (Mo/3+Ni/5+2Nb): more than or equal to 0.02% and less than or equal to 0.50%; (Al+Ti): more than or equal to 0.01% and less than or equal to 0.13%, the remainders being Fe and unavoidable impurities. The steel sheet obtained from the above-mentioned chemical compositions and processes, has high hardness, excellent wear-resistant performance, and is applicable to a variety of parts in mechanical equipments extremely vulnerable to wearing.