... material can be chosen-Mechanical properties:-Tensile strength σ b (MPa) : quenching tempering, frequency 635-Conditions yield strength σ 0.2 (MPa) : quenching tempering, frequency ... , D3, D2, A1, O2, O1, A8, L6, H21, H10, H11, H13,P20, 420SKS3, SKS41, SKD1, SKD11,SKD12,SKS31, SKS3,SKT4, SKD5 ...