Question

Which of the following composition range is correct regarding stainless steel?

(a) 11.5 to 30% chromium and 10 to 22% nickel

(b) 11.5 to 30% chromium and 0 to 22% nickel

(c) 0 to 30% chromium and 0 to 22% nickel

(d) 0 to 30% chromium and 10 to 22% nickel

The question was asked in exam.

I need to ask this question from Prevention in portion Corrosion Prevention of Corrosion Engineering

Answer 1

Right answer is (b) 11.5 to 30% chromium and 0 to 22% nickel

The best I can explain: Stainless steel is the generic name for a series of more than 30 different alloys with composition ranges from 11.5% to 30% chromium and 0 to 22% nickel and other alloying elements.