... plastic injection tooling1) Injection mould material (for core and cavity) : 718, 136H, NAK80, P20 or according to customer's requirements 2 ... material45#,50#,2738,2343,DIN-1,S130,H13,2344,738H,718,8407,S136,NAK80,P20,KD-61,NIMAX ect3Steel hardness20-60HRC4TreatmentPre ...