Compared with plastic injection moldings, die castings are stronger, stiffer, more stable dimensionally, more heat resistant, and are superior to plastics on a properties/cost basis. They help prevent radio frequency and electromagnetic emissions. For chrome plating, die castings are much superior to plastic. Die castings have a high degree of permanence under load when compared to plastics, and are completely resistant to ultra-violet rays, weathering, and stress-cracking in the presence of various reagents. Manufacturing cycles for producing die castings are much faster than for plastic injection moldings. Plastics, however, may be cheaper on a unit volume basis, have inherent color properties which tend to eliminate finishing, are temperature sensitive, and are good electrical insulators.

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