The percentage of carbon in grey iron castings usually varies between
A. 0.5 to 1%
C. 2.5 to 4.5%
D. 5 to 7%
Answer: Option C
Solution(By Examveda Team)Most cast irons have a chemical composition of 2.5–4.0% carbon, 1–3% silicon, and the remainder iron.
Grey cast iron has less tensile strength and shock resistance than steel, but its compressive strength is comparable to low- and medium-carbon steel.
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