Cold chamber die casting uses softer metals, like aluminum, because the alloys have high melting temperatures and would ruin the machines. Hot chamber machines use low melting temperature alloys. A ladle is used instead of a pump to carry the liquefied metal to the mold due to the heat damage it would cause to an injection pump. The table below represents different metal alloys and their properties.
Alloys and Their Properties
|Melting Temperature||Density||Corrosion Resistance||Conductivity|
||660°C /1220 °F||Low||Medium||High|
||Varies 762°C/ 1400°F||High||High||High|
||Varies 421°C /801°F||Low||Varies||High|
||419°C/ 787°F||High||Requires Varnish||High|