Material / Thermal conductivity (W/(m·K))
Cement, portland [1] 0.29
Concrete, stone [2] 1.7
Air 0.025
Wood 0.04 - 0.4
Alcohols and oils 0.1 - 0.21
Silica Aerogel 0.004-0.03
Soil 1.5
Rubber 0.16
Epoxy (unfilled) 0.19
Epoxy (silica-filled) 0.30
Water (liquid) 0.6
Thermal grease 0.7 - 3
Thermal epoxy 1 - 4
Glass 1.1
Ice 2
Sandstone 2.4
Stainless steel[3] 12.11 ~ 45.0
Lead 35.3
Aluminium 237
Gold 318
Copper 401
Silver 429
Diamond 900 - 2320
LPG 0.23 - 0.26