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molten tin and Hastelloy

molten tin and Hastelloy

molten tin and Hastelloy

(OP)
I hve been handed the job of findinga  replacement valve for our tin anode caster.  I was told it is hastelloy lined and is replaced every 4 onths due to leaking.  It shows signs of pitting and the tin in bonding with the Hastelloy.  Can anyone tell me a good coating to use instead of Hastelloy?

Thanks

RE: molten tin and Hastelloy

Whats the temperature ? Can Teflon be used ?

RE: molten tin and Hastelloy

(OP)
Temp is 450 F - 500 F.  That's at the top of the range for Teflon.

RE: molten tin and Hastelloy

Perhaps a conventional steel valve that has it's wetted areas flame sprayed with Alumina might be a cheaper alternative.

RE: molten tin and Hastelloy

(OP)
Great tips.  I will investigate all of them.  Thanks so much.

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