1.

In annealing process, for the formation of hypereutectoid steel, the steel has to be heated above what point?(a) Ac1(b) Ac2(c) Ac3(d) Ac4

Answer» Right answer is (a) Ac1

For explanation I would say: For the formation of hypereutectoid steel, in annealing process, the steel has to be heated above the Ac1 point, which is the lower critical line in the temperature versus carbon content graph.


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