Material properties

Brass link

E = 105 GPa
α = 20.9 × 10^-6/°C

Steel rod

E = 200 GPa
α = 11.7 × 10^-6/°C

A brass link and a steel rod have the dimensions shown at a temperature of 20°C. The steel rod is cooled until it fits freely into the link. The temperature of the entire link-and-rod assembly is then warmed to 40°C.