Here is a professional factory who can supply China Metal Stamping Services talking about the materials for stamping die. The main materials for stamping
die are die steel (including tool steel and high speed steel), and sometimes
China Metal Stamping Services
Stamping die is usually required to have high hardness and wear resistance, and heat treatment is indispensable.
The hardness test of the die steel is mainly carried out by using a Rockwell hardness tester to test the HRC hardness value. When the mold is large and it is inconvenient to move, a leeb hardness tester can be used. The hardness of the cemented carbide was measured using a Rockwell hardness HRA scale.