Material selection in mixed acid media
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I would like to ask everyone which material should be chosen for the following operating conditions: Medium: 68% sulfuric acid and 3% nitric acid; Temperature: 100°C. Since it is used in moving equipment, metal materials are preferred, as non-metals cannot withstand the pressure. The alloy grade 20 is currently in use. Please share your opinions, thank you!
Alloys are fine. Have you considered using tetrafluoroethylene for corrosion protection on carbon steel or 304 surfaces? The cost will be lower.