Material selection for acid storage tanks
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Dear fellow sailors, what material is most suitable for using in storage tanks for storing acetic acid and concentrated sulfuric acid?
Check HG 20583; there are recommendations in it
For concentrated sulfuric acid, carbon steel is sufficient; for acetic acid, the purity and physical state (liquid, gas, etc.) need to be considered.
At room temperature, carbon steel is used for storage tanks containing concentrated sulfuric acid, while 304 stainless steel, fiberglass, and polyethylene-lined steel can all be used for storage tanks containing glacial acetic acid.
For concentrated sulfuric acid, carbon steel is sufficient, but it’s best to fill it completely. If the amount of acetic acid is low, fiberglass or polypropylene is used; if the amount is high, 304 stainless steel is required.