It is suitable for all kinds of metal materials eeb hardness tester MODEL CHI-230Feature & Use:Large LCD display with back ... most metalsBased on the hardness HL value, conversion can be performed to HRB, HRC,HV, HB, HS and Tensile strengthImpact devices DDCDLCD ... from 370 to 2000 (106 N/mm≈)Display functions: Scale, Hardness Value, times, average indicator and average value,impact direction, type ...