12
Emissivity
(cont’d)
* oxidized
** opaque, over 0.51 mm (0.0020") thick
*** natural
Material
Emissivity
Aluminum
0.30
Asbestos
0.95
Asphalt
0.95
Basalt
0.70
Brass*
0.50
Brick
0.90
Carbon
0.85
Ceramic
0.95
Concrete
0.95
Copper*
0.95
Dirt
0.94
Food (frozen)
0.90
Food (hot)
0.93
Glass (plate)
0.85
Ice
0.98
Iron*
0.70
Lead*
0.50
Limestone
0.98
Oil
0.94
Paint
0.93
Paper
0.95
Plastic**
0.95
Rubber
0.95
Sand
0.90
Snow
0.90
Steel*
0.80
Textiles
0.94
Water
0.93
Wood***
0.94
Common Emissivities