Plastic injection Mold Material Selection

As part of the mold base and materials procurement process,the various types of metals must also be selected.Just as there are many different plastics suitable for injection molding,there are many ferrous and non-ferrous metals that are suitable for use in injection molds.

Some of the more common metals and their properties are provided.Of all these metals, AISI P20 is the most common due to its favorable combination of properties.However,P20 is sometimes improperly specified in many molding applications since other metals would provide better performance,lower mold making cost,or lower injection molding costs.In this section,important properties and trade-offs of mold materials will be discussed.

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