Metalcasting is a manufacturing process in which metal is melted and poured into molds where it solidifies into geometrically complex components. Metalcasting is unique among metal component forming processes for a variety of reasons.  

First, the array of available metalcasting processes are capable of producing very simple to extremely complex components in almost any metal, ranging in weight from less than an ounce to several hundred tons. In addition, metalcasting processes are available that make it economical to produce a single prototype part, while others achieve their economies in creating millions of units.

In terms of value and volume, metalcasting ranks second only to sheet steel, which begins by casting steel slabs, in the metal producing industry. According to U.S. Department of Commerce statistics, metalcasting remains one of the ten largest industries when rated on a value-added basis. Annually, more than 2,000 metalcasters produce 13 to 15 million tons of castings valued at $35 to 40 billion (according to 2008 statistics).

The key to metalcasting design and purchasing comes down to understanding the metal-process marriage.