A steel alloy is known to contain 93.8 wt% Fe, 6.0 wt% Ni, and 0.2 wt% C. Assume that there are no alterations in the positions of other phase boundaries with the addition of Ni. (a) What is the approximate eutectoid temperature of this alloy

650°C or 1,200°F

Explanation:

Data provided in the question

Steel alloy contains 93.8 wt% Fe, 6.0 wt% Ni, and 0.2 wt% C

Plus we also assume that there are no changes in the boundaries of postions who have other phases but there is an addition of Ni.

Based on the above information, the approximate eutectoid temperature of this alloy for 6.1 wt% is 650°C or 1,200°F