Material selection for sulfuric acid tanks
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Hello everyone: The medium is sulfuric acid – how should the material be selected? Some use carbon steel, while others use alloy 20, a nickel-based alloy
Check the concentration and temperature. For your question, it’s given a poor rating – the conditions aren’t all met.
Concentrated sulfuric acid requires stainless steel, as a passivation layer forms on its surface when it comes into contact with concentrated sulfuric acid. . . .
At a certain temperature, the corrosion rate of carbon steel by dilute sulfuric acid increases as the concentration rises; once a certain concentration is reached, the corrosion rate drops sharply as the concentration continues to increase. Another characteristic of sulfuric acid’s corrosive effect is that, at the same concentration, its corrosiveness **increases** as the temperature rises. In addition to concentration and temperature, the corrosivity of sulfuric acid is also greatly influenced by impurities present in the acid. In addition, some physical factors such as medium flow rate, solid particles, and scaling also affect corrosivity.
Concentration, temperature? ~Different materials are used for different concentrations and temperatures
What metal material is better for phosphoric acid and mixed acids?