We need to install a level switch probe in 98% sulfuric acid. Based on corrosion resistance, would it be better to use a Hastelloy C alloy or should we use 316L stainless steel? The storage tank temperature is 70 to 90 degrees F and there is no contamination of the acid.
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Re: Is it better to use a Hastelloy C alloy or 316L stainless steel?
12 January 2012 at 1:29pmAccording to NACE Recommended Practice RP-0391 "Materials for the Handling and Storage of Commercial Concentrated (90 to 100%) Sulfuric Acid at Ambient Temperatures", either of these materials of construction should work for 98% sulfuric acid under the conditions you have described.
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