Question

The AISI grade 317 contains ________ amount of molybdenum.

(a) 5 – 10 %

(b) 3 – 5 %

(c) 1 – 2 %

(d) 11 – 14 %

This question was posed to me in homework.

My question is based upon Fermenter Design topic in chapter Design of Fermenter of Fermentation Technology

Answer 1

Correct answer is (b) 3 – 5 %

Explanation: The AISI grade 317 contains 3 – 4 % of molybdenum. It was used in citric acid fermentation to prevent the leaching of heavy metals with steel which interferes in the process of fermentation.