Table 4: Emissivity Values For Common Materials - Teledyne FLIR A68 Series User Manual

The following images demonstrate the effect of this reflected energy; depending on the
angle, the stainless steel blade reflects the heat from the nearby hot object onto the IR
sensor making it appear hotter than it actually is. Note that the reflection on the angled
blade shows the difference in emissivity between the camera body and the Teledyne
FLIR logo paint.
Flat blade
Emissivity tables for many types of material are available from a variety of sources.
The following table lists approximate emissivity values for some common surfaces.

Table 4: Emissivity Values for Common Materials

Material
Aluminum, anodized
Aluminum, polished
Asphalt
Brick
Concrete, rough
Copper, polished
Copper, oxidized
Glass, smooth (uncoated)
Ice
Limestone
Marble (polished)
Paint (including white)
Paper, roofing or white
Plaster, rough
Sand
Silver, polished
Silver, oxidized
Skin (human)
Snow
Water
FLIR A68/A38 Series IR Camera User's Manual
Emissivity
0.77
0.05
0.88
0.90
0.91
0.04
0.87
0.95
0.97
0.92
0.89 to 0.92
0.9
0.88 to 0.86
0.89
0.9
0.02
0.04
0.98
0.8 to 0.9
0.98
Angled blade reflecting energy
Introduction to Microbolometers • 25