What are die castings advantages over producing a design as a plastic molding?
A. Compared with the most widely specified plastic injection moldings, die castings are stronger, stiffer, more stable dimensionally, more heat resistant, and are superior to plastics based on mechanical properties per unit of cost. Die castings have a high degree of permanence under load when compared to plastics and are far more resistant to ultra-violet irradiation, weathering and stress cracking in the presence of various reagents. Castings offer built-in EMI/RFI shielding, which is often a problematic and costly post-casting operation with plastic housings. However, plastic raw material costs less on a unit volume basis. It has color- inherent properties which tend to eliminate finishing. It is temperature sensitive and has a high degree of electrical resistance.
