Identify the false statement?
Correct answer: A. Martensitic steels are less susceptible to pitting corrosion than austenitic steels
- A. Martensitic steels are less susceptible to pitting corrosion than austenitic steels
- B. Pitting corrosion is usually very localised
- C. Hydrogen embrittlement is facilitated by tensile stress
- D. Stress corrosion cracking is facilitated by tensile stress
Explanation
Martensitic stainless steels generally have lower corrosion resistance and are more prone to pitting than austenitic stainless steels, so statement a is false. Pitting, hydrogen embrittlement, and stress-corrosion cracking are correctly associated with the behaviours stated in b, c, and d.
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