High hardness hardened steel yog nrov hauv cov cuab yeej txiav, tuag thiab pwm kev lag luam.Feem ntau cov tig, milling nto yog OK, tab sis thaum koj xav tau kom tau zoo nto tiav, koj yuav tsum zom nws.Tab sis rau siab hardness hardened steel, cov pa abrasive log muaj kev ua haujlwm tsis zoo.Zoo, CBN lub log yog qhov zoo tshaj plaws kev sib tsoo lub log los yog lub ntsej muag lub ntsej muag rau Hardened Steels.