Can 304 steel withstand 8%–10% liquid caustic at a temperature of 60°C? ? ?
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Can 304 steel withstand 8%–10% liquid caustic at a temperature of 60°C? ? ? No, do I need to use 316L?
Simply speaking, at 60 degrees Celsius, 10% alkaline solution does not cause stress corrosion in 304 material.
Calculate the PPM of CHLORIDE; at 60 DEG, if the PPM is >50 ppm, 304 is not suitable. 50-300ppm, use 316; >300ppm, use Ti
No, the corrosion data sheet specifies that at less than 50% sodium hydroxide, it can be used at 25°C; it can also be used at 50°C and 80°C, but corrosion is more severe in those conditions. It cannot be used at temperatures above 100°C.
Which manual is it? Which page? ?
It’s not very good, and 316L is not recommended; 310S is the suggested choice
When the temperature exceeds 50 degrees, the corrosivity increases significantly. My advice regarding the materials to be used in the caustic soda electrolysis plant is that you had better follow my recommendation, to avoid problems in the future.
Corrosion Data Manual, Page 461
Our company uses a large amount of 8% alkaline solution at a temperature of around 54 degrees. The pipes and storage tanks are mostly made of carbon steel; however, there is some corrosion in those parts of the pipes where the pressure is high. Using 304 material will not pose any problem at all