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Refractory Material

(material with high condensation temperature)

Refractory Material is material with a high Condensation Temperature (essentially, Boiling Point), thus turns to solid early as it cools. The opposite is called Volatile Material. The material in question can be a pure chemical element, i.e., a Refractory Element or Volatile Element. A commonly-used line between the two is condensation above/below 1300K.

For example, Iron is moderately refractory and Lithium is moderately volatile.