Question

What is the amount of silicon present in cast carbon steels?

(a) 0.25% – 0.6%

(b) 0.25% – 0.8%

(c) 0.45% – 0.9%

(d) 0.45% – 0.1%

I had been asked this question in semester exam.

This intriguing question originated from Classification of Foundry Metals and Alloys in section Foundry Introduction & Materials of Casting-Forming-Welding II

Answer 1

The correct choice is (b) 0.25% – 0.8%

To explain I would say: The amount of silicon that is present in terms of percentage composition is found to be 0.25% to 0.8%. Elements like silicon and manganese are added in the steel alloys for the purpose of deoxidation.