Material selection for equipment: 8% sulfuric acid + 1% nitric acid
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The washing solution contains 8% sulfuric acid + 1% nitric acid, with no chloride ions. No salt. Is 316L material suitable? What material is suitable to choose? Thank you all
It mainly depends on temperature; generally, non-metals are more reliable
I was wondering if it would be possible to provide a polyaniline-coated specimen for testing; if so, carbon steel + polyaniline could be an option
The washing solution contains 8% sulfuric acid + 1% nitric acid, with no chloride ions. Use 80-85 degrees, no salt. Is 316L material suitable? Due to such conditions, 316L stainless steel has poor corrosion resistance, and its use is not recommended. It is recommended to use alloy stainless steel grade 20, which is an excellent material resistant to inorganic acids. Non-metallic material coatings can also be considered; if the right material is chosen, it can solve the problem while also reducing costs.
At this temperature, the corrosivity of mixed dilute acids remains relatively high; it is recommended to use non-metallic materials. What are the operating conditions like?