Thermal Expansion Coefficients at 20 C

Material Fractional expansion
per degree C x10^-6 Fractional expansion
per degree F x10^-6

Glass, ordinary

9

5

Glass, pyrex

4

2.2

Quartz, fused

0.59

0.33

Aluminum

24

13

Brass

19

11

Copper

17

9.4

Iron

12

6.7

Steel

13

7.2

Platinum

9

5

Tungsten

4.3

2.4

Gold

14

7.8

Silver

18

10

Thermal expansion discussion

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