Fluke endurance series - Page 144

Endurance
®
Series
Users Manual, Rev. 2.0, Jun 2020
144
Table 15-2: Typical Emissivity Values for Non-Metals
NON-METALS
Emissivity
Material
1 µm
1.6 µm
2.4 µm
Asbestos
0.9
0.8
Asphalt
Basalt
Carbon
Unoxidized
0.8-0.95
0,8-0,9
Graphite
0.8-0.9
0.8-0.9
Carborundum
0.95
Ceramic
0.4
0.8-0.95
Clay
0.8-0.95
Coke
0.95-1.00
0.95-1.00
0.95-1.00
Concrete
0.65
0.9
Cloth
Glass
Plate
0.2
“Gob”
0.4-0.9
Gravel
Gypsum
Ice
Limestone
Paint (non-al.)
Paper (any color)
Plastic, opaque at 500 µm
thickness (20 mils)
Rubber
Sand
Snow
Soil
Water
Wood, Natural