Zinc casting question

Hello, I'm new, just joined. I have a "what would happen if?" question.

If I had a stainless steel half sphere - the shape of half a tennis ball, placed a copper tube coil inside that steel half ball shape - then poured zinc into the ball - encasing the copper coil to the brim, what would happen?

Would the copper coil remain "cast-in" the steel when cooled - or could I remove it from the steel?

I am trying to "cast-in" a copper tube coil inside zinc as a solid piece - but have the smooth round shape of half a tennis ball - half an egg - etc.

Also, would the molten zinc destroy the copper tube? I am trying to fabricate a custom heater element for a prototype of an invention.

I appreciate any help. Kind regards.


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