The percentage of carbon in cost iron is :

Options

A. 0.01 to 0.25
B. 0.5 to 1.5
C. 6 to 8
D. 3 to 5

Answer

D

Explanation

Cast Iron is a hard, brittle, nonmalleable iron-carbon alloy, cast into shape. It contains 2 to 4.5 percent carbon, 0.5 to 3 percent silicon, and lesser amounts of sulfur, man- ganese, and phosphorus.