Tantalum Bolts vs Polymer Bolts for HCl

Q: We have on application in one HCL tank and we are using hastelloy bolts but they are not efficient. So I ask the quotation for material tantalum in metals or other material like PEEK, please advise what is the better solution.

A:  It depends on the temperature of the HCL and the load the bolts will need to handle. Tantalum bolts are the best material for HCl at elevated temperatures however it is very expensive. Depending on the load and temperature a polymer like PVDF bolts may work.

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