... ally steel, aluminum alloy, bearing steel, carburized steel sheet, etc.HRM-45DT Motorized Superficial Rockwell Hardness Tester adopts motorized testing method ... , HRF,HRG,HRH,HRKHR15N, HR30N, HR45N, HR15T, HR30T, HR45THRE, HRL, HRM, HRRInitial Testing Force10kgf (98N)3kgf (29.42N)10kgf (98N)All ...