There are two on the Thermoplastic injection moldmaking questions and answers are as follows

1.What are the PA, POM, PS, PE, EP, PP, ABS, PC, PMMA, PVC these plastic shrinkage?

2.What kind of steel material suitable for above plastic core material (such as PA, POM with what steel material with what steel material)?

Answer:

1 shrinkage with your product size, thickness of the flesh are linked to the online search, and the book says is an average value or a range of values, you need to get this data model you will miserable.

2 selection of mold steel, mainly to see the customer requirements and cost considerations, what materials with no special definition of what steel.