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Problem $6$

You temper martensite with $0\mathrm{.}77$wt$\%$ carbon concentration in an oven at $450^($@$)$C$.$ Using Figure $12-27$

determine:

a$)$ The tensile strength

b$)$ The yield strength

c$)$ The hardness

Figure $12-27.$ Effect of tempering temperature on the properties of eutectoid steel.