Question

The composition of chromium in ferritinic alloy is _____________

(a) 13 – 20 %

(b) 10 – 12 %

(c) 18 – 20 %

(d) 25 – 30 %

The question was asked in an internship interview.

This intriguing question originated from Properties of Fermentation Vessels topic in portion Fermentation System & Management of Fermentation Technology

Answer 1

Right answer is (a) 13 – 20 %

Easiest explanation: The composition of chromium in Ferritinic alloy is 13 – 20 % with less than 0.1% carbon content. They are usually less expensive. They also have good resistance to stress-corrosion cracking.