Typical Emissivity Values For Non-Metals - RayTek Thermalert GP Series Operator's Manual

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TYPICAL EMISSIVITY VALUES FOR NON-METALS

Material
Asbestos
Asphalt
Basalt
Carbon
Unoxidized
Graphite
Carborundum
Ceramic
Clay
Concrete
Cloth
Glass
Plate
Gravel
Gypsum
Ice
Limestone
Paint (non-al.)
Paper (any color)
Plastic (opaque, over 20 mils)
Rubber
Sand
Snow
Soil
Water
Wood, Natural
68 Thermalert GP Series Operator's Manual
www.calcert.com
15
10 20
5 25
0 30
Emissivity
0.95
0.95
0.7
0.8-0.9
0.7-0.8
0.9
0.95
0.95
0.95
0.95
0.85
0.95
0.8-0.95
0.98
0.98
0.9-0.95
0.95
0.95
0.95
0.9
0.9
0.9-0.98
0.93
0.9-0.95
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