Commonly material are used:
P20,718,S45C,S50C,2738,2314,H13,etc for Core and cavity and mould base.
SKD61,SUJ2,etc for gate,gate bush,guide pin/bush.
LKM,DME standard mould base or ther generic steel.
YUDO,EWIKON HASCO,MOLD-MASTER etc brand hot runner system and some Chi...
Products: motorcycle helmets icon,
motorcycle powder coating