HotFind-D Infrared Camera Operation Manual
41
Appendix:
Emissivity of Various Materials
Material
Emissivity
Temperature (°C)
approximation
Metal
Aluminum
Polished aluminum
100
0.09
Commercial aluminum
100
0.09
foil
Electrolytic
25
~
600
0.55
chromeplate alumina
25
~
600
0.10
~
0.20
Mild alumina
25
~
600
0.30
~
0.40
Strong alumina
Brass
Brass mirror (highly
28
0.03
polished)
200
~
600
0.61
~
0.59
Brass oxide
Chrome
40
~
1090
0.08
~
0.36
Polished chrome
Copper
Copper mirror
100
0.05
Strong copper oxide
25
0.078
800
~
1100
0.66
~
0.54
Cuprous oxide
1080
~
1280
0.16
~
0.13
Liquid copper
Gold
230
~
630
Gold mirror
0.02
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