The die casting process is a forming process in which molten metal is injected into the cavity of a steel die. The cavity is precision machined, with tight tolerances, into a block of heat resistant tool steel. Coupled with process control and the uniform shrinkage characteristics of zinc alloys, this process results in castings with exact precision. In zinc alloy die casting, the production cycle is the fastest of the metal casting processes due to zinc’s relatively low melting/solidification temperature (379-390°C). Zinc die casting is used to produce parts from less than a gram in weight to a kilo or more.