... UT test 3 annealed,black/peeled/turned 4 in stock carbon steel bars Steel grade: Cr12(GB), D3(ASTM/AISI), SKD1(JIS), ... hardness :269-217HBS 4 Properties• good wear resistance and compressive strength and • resistance to plastic deformation• good hardenability 5 ApplicationsIt ... for manufacture of trimming dies, blanking dies for paper and plastic, shear blades for cutting light gauge material, thread ...