Carbon content range for cast irons Select the correct typical carbon range that defines cast iron (as opposed to steel). Choose the correct option.
Mechanical Engineering
Engineering Materials
Difficulty: Easy
Choose an option
-
A0.1 to 0.5% C
-
B0.5 to 1.0% C
-
C1.0 to 1.7% C
-
D1.7 to 4.5% C
Answer
Correct Answer: 1.7 to 4.5% C
Explanation
ConceptCast iron is generally defined for carbon contents from about 2% up to roughly 4.3–4.5%. Many curricula round the lower bound to 1.7% (the eutectoid limit of steel) to distinguish it clearly from steels.
Final Answer1.7 to 4.5% C