Question

Transformation of hypoeutectic cast iron is applicable for the composition of cast iron of ________ carbon.

(a) 2.0-4.3%

(b) 4.3%

(c) 4.3-5.0%

(d) Over 5%

I got this question in an international level competition.

I want to ask this question from Transformation of Steel and Cast Iron in chapter Constitution of Alloys and Phase Diagrams of Engineering Material & Metallurgy

Answer 1

Correct answer is (a) 2.0-4.3%

The explanation is: Transformation of hypoeutectic cast iron can be seen for the composition of cast iron between 2.0-4.3%. For eutectic cast iron, this composition is 4.3% carbon, whereas, for hypereutectic cast irons, it is 4.3-5.0% carbon.