This standard specifies the technical conditions for steel selection and heat treatment of punch and concave dies. This standard applies to cold blanking and cold forming molds for sheet metal parts.
JB/T 6058-1992 history
2018JB/T 6058-2017 Specifications for punching die steel
1992JB/T 6058-1992 Technical specification for steels intended to be used in die stamping and their heat treatment