A steel is heated until 40 austenite with a carbon content

Question

1. A steel contains 55% α and 45% γ at 750°C. Estimate the carbon content of the steel.

2. A steel contains 96% γ and 4% Fe₃C at 800°C. Estimate the carbon content of the steel.

3. A steel is heated until 40% austenite, with a carbon content of 0.5%, forms. Estimate the temperature and the overall carbon content of the steel.