... tempering, quenching, quenching the deep carburization, nitriding of various steel products, testing of copper alloy, aluminum, carbide and other ... If annealed low carbon steel, stainless steel, copper alloy, hard alloy, malleable iron. Is to apply a broader Rockwell ... —TDiamond indenter45N45N—TMild steel, stainless steel, copper alloy, aluminum alloy thin strips, thin-walled tubes, small parts, ...