In the iron-iron carbide diagram, what is the carbon percentage by weight at eutectic point?(a) 0.8%(b) 3%(c) 4.3%(d) 6.67%The question was asked in an interview for internship.Question is taken from Air Requirements and Metallurgical Control for Cupola topic in section Metal Furnace and Practice of Casting-Forming-Welding II

In the iron-iron carbide diagram, what is the carbon percentage by wei

1.	In the iron-iron carbide diagram, what is the carbon percentage by weight at eutectic point?(a) 0.8%(b) 3%(c) 4.3%(d) 6.67%The question was asked in an interview for internship.Question is taken from Air Requirements and Metallurgical Control for Cupola topic in section Metal Furnace and Practice of Casting-Forming-Welding II
Answer» Right ANSWER is (c) 4.3% To explain I WOULD say: In the IRON iron-carbide equilibrium diagram, the eutectic POINT is achieved at a temperature of 1147°C. At this point, the percentage AMOUNT of carbon is 4.3% by weight.

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