Originally Posted by
A. Muse
Nothing is fire proof - it may be fire resisting but everything melts at some point.
That is simply not true. Although the heat of a fire in theory has no limit (one can keep adding fuel) the combustion temperature is strictly limited by the chemical potential of the reactants. Any material that is physically and chemically stable above this temperature can contain the fire. Ceramics and refractory metals (amongst others) have no problems doing so.