It is used to determine the Rockwell hardness of ferrous metals, non-ferrous metals and non-metallic materials. It is widely used

in quenched steel, quenched and tempered, annealed steel, chilled castings, malleable castings, hard alloy steel, aluminum alloy,

copper, bearing steel, Hard plastic, hard rubber, aluminum, tin, copper, mild steel, synthetic resin and friction material hardness

measurement