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Which of the following metal is more susceptible to crevice corrosion?

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Which of the following metal is more susceptible to crevice corrosion?

(a) Titanium

(b) Hastelloy C

(c) Stainless steel-430

(d) Titanium and stainless steel

I have been asked this question in a national level competition.

My question is from Eight Forms topic in portion Eight Forms of Corrosion of Corrosion Engineering

1 Answer

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Best answer
Correct option is (c) Stainless steel-430

To explain I would say: Stainless steel-430 is highly prone to crevice corrosion. The reasons are as follows:

1. Large critical current density

2. Wide active-passive transitions

3. Limited passive region

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