Materials Emissivity Table

Material Emissivity Asbestos 0.95 Asphalt 0.95 Basalt 0.7 Brick   Red, Rough 0.93 Gault Cream 0.26 to 0.30 Fire Clay 0.75 Lime Clay 0.43 Fire Brick 0.75 to 0.80 Magnesite, Refractory 0.38 Gray Brick 0.75 Silica, Glazed 0.88 Silica, Unglazed 0.80 Sandlime 0.59 to 0.63 Carborundum 0.92 Carbon   Unoxidized 0.8 to 0.9 Graphite 0.7 to 0.8

Material Emissivity Ceramic 0.95 Clay 0.95 Concrete 0.95 Cloth 0.95 Glass 0.85 Gravel 0.95 Gypsum 0.8 to 0.95 Ice 0.98 Limestone 0.98 Paint (non-Al.) 0.9 to 0.95 Paper (any color) 0.95 Plastic 0.95 Rubber 0.95 Sand 0.9 Snow 0.9 Soil 0.9 to 0.98 Water 0.93 Wood 0.9 to 0.95