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Which should you use? It should be apparent right away that if you use injection molding, you are going to end up with plastic parts and if you use die casting, you are going to end up with metal parts. If you know what sort of parts you want to end up with, you know right away which to use. But if you’re not sure which material is better for you and your company’s products, read on.

Benefits of Plastic Injection Molding

Production is quicker due to more flexibility in the molding process

Plastic Injection molds can accommodate different plastic or polymer materials

Fillers can be used in plastic molds to increase strength

Efficient process with very accurate finishes

Benefits of Aluminum Die Casting

Efficient process with a high degree of accuracy

No need for secondary operations

Complicated designs can be more easily cast

Produces higher-quality products with better tolerance that will last longer

Aluminum Die Casting vs. Injection Molding

So why would you choose injection molding over die casting? If you are looking to produce a lot of parts very inexpensively, injection molding might be the way to go, as labor and material costs are fairly light, although it is important to keep in mind that the cost of the plastic injection molding machines themselves and any secondary equipment can be fairly expensive.