What are the most important and decisive factors in choosing die steel?
The forming method can be selected from two basic material types.
Hot working tool steel, which can withstand relatively high temperatures during die casting, forging and extrusion.
Cooling processing tool steel, which is used for blanking and cutting, cold forming, cold extrusion, cold forging and powder compression molding.
Some plastic: plastic produce corrosive by-products, PCV plastic, for example, for a long time shutdown caused by condensation, corrosive gas, acid, cooling/heating, water, or other factors, such as storage conditions also can produce corrosion, in these cases, it is recommended to use stainless steel material of die steel.
Mold size: large size molds often use prehardened steel, and integral hardened steel is often used for small size molds.
Mold usage: for long-term use (>1000000 times), high hardness steel should be used for molds with a hardness of 48-65hrc.The molds used for a long time (100,000 to 1,000,000 times) should use prehardened steel with a hardness of 30-45 HRC.