... JIS SKD61 2, Heat treatment:Nitrided 3, I.H Inner Hardness:HRC42±2° 4, S.H Surface Hardness :HV9001000° 5, Vacuumed :HRC52±2 ... refer to our company website.Shenzhen Datong Precision Metal Co., Ltd. is a specialized manufacturer of mold components in DIN, AISI ...