Chapter 10.21, Problem 18QP

(a)

To determine

A $\text{2}\text{kg}$ specimen in entirely $\alpha$ phase solid solution has an composition of 85w%Pb-15wt%Sn alloy and is heated to $\text{200°C}\left(390\text{°F}\right)$. The alloy is to be melted to extent that $50\%$ of the specimen is liquid: The temperature must the specimen be heated?

(b)

To determine

The required amount of tin must be added to specimen to achieve this state?