Chapter 16, Problem 13PCE

Bimetallic strip A is made of copper and steel; bimetallic strip B is made of aluminum and steel. (a) Referring to Table 16-1, which strip bends more for a given change in temperature? (b) Which of the metals listed in Table 16-1 would give the greatest amount of bend when combined with steel in a bimetallic strip?

Table 16-1 Coefficients of Thermal Expansion near 20°C

Substance	Coefficient of linear expansion, α(K−1)
Lead	29 × 10−6
Aluminum	24 × 10−6
Brass	19 × 10−6
Copper	17 × 10−6
Iron (steel)	12 × 10−6
Concrete	12 × 10−6
Window glass	11 × 10−6
Pyrex glass	3.3 × 10−6
Quartz	0.50 × 10−6
Substance	Coefficient of volume expansion, β(K−1)
Ether	1.51 × 10−3
Carbon tetrachloride	1.18 × 10−3
Alcohol	1.01 × 10−3
Gasoline	0.95 × 10−3
Olive oil	0.68 × 10−3
Water	0.21 × 10−3
Mercury	0.18 × 10−3