Material selection issues for 85% concentrated phosphoric acid at 108°C
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As the title suggests, I would appreciate it if everyone could tell me which material is better to choose Also, can 904L withstand 85% phosphoric acid at 108°C? Thank you all!
904L can withstand 108°C and 85% sulfuric acid without any problem.
This post was last edited by wx_Catherine_Mi on 2022-5-7 09:25. Thank you very much
I understand what you mean. The corrosion caused by phosphoric acid is very similar to that caused by sulfuric acid. Thank you very much
What is the approximate corrosion rate?
What is the approximate corrosion rate?
904L (N08904, 1.4539) is a super austenitic acid-resistant stainless steel, containing 19.0%-23.0% chromium, 23.0%-28.0% nickel, 4%-5% molybdenum, and 1%-2% copper in its composition. Material 904L exhibits excellent activation-passivation transition capabilities and very good corrosion resistance. It shows good resistance to non-oxidizing acids such as sulfuric acid, acetic acid, formic acid, and phosphoric acid, as well as good pitting resistance in neutral chloride-containing media. Additionally, it possesses good resistance to crevice corrosion and stress corrosion. It is suitable for sulfuric acids of various concentrations at temperatures below 70°C; it resists corrosion under normal pressure in acetic acids of any concentration and at any temperature, as well as in mixed acids of formic acid and acetic acid.