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 |
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