Empirical Relationships for Transformations in Steels. Heat treatment of steels depends upon knowing the A₁, A₃, Acm, M_s, and M_f temperatures. Steel producers often provide their customers with empirical formulas that define these temperatures as a function of alloying element concentrations. For example, one such formula described in the literature is

Write a computer program that will ask the user to provide information for the concentrations of different alloying elements and provide the M_s and M_f temperatures. Assume that the M_f temperature is 215°C below Ms.

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M,(in °C) = 561 - 474(% C) - 33 (% Mn) - 17(% Ni) - 17(%Cr) - 21(% Mo)