Die casting (also called pressure die casting) is a special metal casting process.

By pouring molten or semi-molten metal into the cavity of the casting machine, the metal liquid is filled into the die-casting mold cavity at high speed under high pressure, and the precision casting method is obtained through cooling and solidification.

This process is somewhat similar to injection molding. Most die castings are iron-free, such as zinc, copper, aluminum, magnesium, lead, tin, and lead-tin alloys and their alloys.