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In the iron-iron carbide diagram, what is the carbon percentage by weight in the peritectic region?

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in Casting-Forming-Welding II by (119k points)
In the iron-iron carbide diagram, what is the carbon percentage by weight in the peritectic region?

(a) 0.8%

(b) 0.18%

(c) 4.3%

(d) 6.67%

This question was posed to me in an online interview.

My doubt stems from Air Requirements and Metallurgical Control for Cupola in chapter Metal Furnace and Practice of Casting-Forming-Welding II

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Best answer
Correct answer is (b) 0.18%

Easiest explanation: None.

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