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In the iron-iron carbide diagram, what is the carbon percentage by weight at eutectoid point?

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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 at eutectoid point?

(a) 0.8%

(b) 0.18%

(c) 4.3%

(d) 6.67%

I got this question in quiz.

My question is taken from Air Requirements and Metallurgical Control for Cupola topic in division Metal Furnace and Practice of Casting-Forming-Welding II

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The correct option is (a) 0.8%

To elaborate: None.

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