Product details
MM40/MM30 is beryllium copper alloy steel.
Because the thermal conductivity of MM40 is 3-4 times that of die steel, MM40 beryllium copper alloy is widely used in the manufacture of dies, cores, inserts and inserts that need rapid cold working, which can shorten the production cycle of products.The current factory status of MM40 can be divided into two types: high hardness MM40 hardness: 36-42hrc;