Specifically, a crucible made from 90+% Aluminum Oxide. What metals can be melted in it without any weird reaction taking place?
closed as unclear what you're asking by Wildcat, ron, bon, M.A.R. ಠ_ಠ, Jan Oct 4 '15 at 13:09
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I would suppose that the manufacturer would provide details as to what the melting point of the crucible is....and it probably isn't a good idea to find for yourself. Anyhow for sure you can melt gallium. https://en.wikipedia.org/wiki/Gallium
But it probably cannot melt tungsten. https://en.wikipedia.org/wiki/Tungsten