... %Mn0.35~1.20%Si0.40~1.20%S≤0.05%P≤0.05%Cr0.5%~1.65Average ... preparation applications(2)≥53-60HRC:With this hardness,Newly made bearing steel grit is angularity , the grit is ... gradually grinded to be round in use, its particularly suited for cleaning oxide skin, ... operator and workers’ health. Abrasive bearing steel grit made in China , skype:qt.1131 QQ:1742625742 Tel:008615966055683