CTE for Some Common Materials Material | CTE1 | Alumina, Grade 99 | 7.8 | Aluminum Alloy 5086 | 23.7 | Aluminum Alloy 6061 | 23.4 | Beryllium Copper | 18 | Beryllium I-70H, Optical Grade | 11.4 | Borosilicate Glass | 42 | Cast Iron, Gray | 10.82 | Chromium Carbide | 8.4 | Copper alloy, Free Cutting Brass | 20.5 | Copper Alloy, Yellow Brass | 20.3 | Copper, UNS C14310 | 17 | Diamond, Natural | 1.2 | Fused Silica, Fused Quartz | 0.55 | Granite | 6.32 | Invar | 1.2 | Sapphire (Aluminum Oxide - Al2O3) | 4.0 | Stainless Steel, 304 | 17.3 | Stainless Steel, 316 | 16.0 | Stainless Steel, 440 | 10.2 | Tool Steel, 52100 | 11.9 | Tool Steel, D2 | 10.5 | Tungsten Carbide (6% Cobalt Binder) | 4.9 | Zerodur | 0.05 | Zirconia, 5-10% CaO Stabilized | 7.5 | Zirconia, Gauge Block | 9.2 | Zirconia, Y2O3 Stabilized | 10.5 | NOTES: 1. These are average values culled from a number of sources. They are, in general, averages over the range 0-100 °C, and the uncertainty is estimated to be 3-5 % (k = 2). 2. These entries are averages of a class of materials, and the variability within the class is over 10 %. |