Assertion: hafnium's melting point | /r/HasProperty | 4215 °c
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Source sentences:
text: Hafnium carbide (HfC) is the most refractory binary compound known, with a melting point of 3890 °C, while the mixed TaHf carbide Ta 4 HfC 5 has the highest melting point (4215 °C) of any currently known compound.