How come you can pour molten titanium with a melting point of 3291 degrees into a steel funnel with a melting point of 1300 degrees and it doesn't melt the funnel?
Firstly you're mixing units
The melting point of titanium is 1668C (3000F)
The melting point of steel starts at around 1300C up to around 1500C depending on carbon content.
For brief contact where the mass of the steel is reasonably high you would probably get away with this but generally foundry equipment which comes into contact with molten metal is lined with a refractory of some sort. Which both provides thermal insulation and prevents cross-contamination.
Rather more of an issue is the reactivity of titanium which will burn in air some time before it gets to its melting point and needs inert gas shielding to be worked hot.