Does 32% NaOH cause corrosion to 304 at 87 degrees? Is the corrosion severe? At 350KPA pressure?

2016-03-04View Original

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Does 32% NaOH cause corrosion to 304 at 87 degrees? Is the corrosion severe? At 350KPA pressure?

Reply #22016-03-05

There is a risk of stress corrosion at 100°C

Reply #32016-03-29

The pressure isn’t high, but 32% NaOH at 87 degrees is corrosive to 304 steel; it’s safer to use 316L.

Reply #42016-03-30

Corrosion mainly occurs at the weld area; it is recommended to provide protection for the welds.

Reply #52016-03-30

Since parameters for all concentrations and temperatures are not available, here is a reference: at 120°C and a concentration of 30%, the annual corrosion rate is <0.05 mm

Reply #62021-01-15

Will alkali embrittlement occur?

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