Plastic mold steel type
- Category by material there are perhardened and quenching－tempering two types.
- Tea perhardened, category by hardness there are HRC10,20,30,40 four types. HRC40 steel can be considered for machinability.
- Tea quenching－tempering, Generally supply annealing steel , after molding ejection that would be heaten for abjust its hardness accordding to its application.
Plastic mold dedicated steel type summary
(1)P20：It is widely used for general plastics molds such as groceries, car shells, appliance shells, etc.
(2)NAK80：Emanate hardened pre-hardened steel․ It is well-know mold steel with hardness in HRC40, which is widely used in general plastic components to molds for vinyl chloride plastics. The advantage of this material is that it's still can be carving and good polishability.
‧Stainless plastic mold steel
‧Extremely high purity
‧Good wear resistance
Plastic materials are distinguished according to the molecular structure of synthetic resins.
Thermoplastics and Thermosets：
Thermoplastics can be melted and recast almost indefinitely.
There are PE / PP / PVC / PS / ABS / PMMA / POM / PC / PA, etc.
Thermoset are composites made from resins which crosslink during curing.
Such as Phenolic plastic、Amino plastic、Melamine、Silicone。
For different application there are common use plastic such as PE / PP / PVC / PS, etc. industrial plastic such asABS / POM / PC / PA, etc. In addition, there are some special plastics such as high temperature, high humidity, corrosion resistance and other plastics modified for special purposes.