Cold-chamber machines transfer molten metal into the shot sleeve for each cycle and suit higher-melting alloys such as aluminum. Hot-chamber machines keep the injection system in the molten metal and support fast cycles for suitable zinc and magnesium alloys.
Alloy, part size, cycle rate, tooling, and equipment availability should be reviewed together.
Source: [https://redstonemanufacturing.com/cold-chamber-vs-warm-chamber-vs-hot-chamber-die-casting](https://redstonemanufacturing.com/cold-chamber-vs-warm-chamber-vs-hot-chamber-die-casting)
