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Appendix | Emissivity Table Metals
thermoMETER TIM 8 / thermoIMAGER TIM 40
Material
Typical Emissivity
Spectral response
1.0 μm
1.6 μm
5.1 μm
8 - 14 μm
Iron
Non oxidized
0.35
0.1 - 0.3
0.05 - 0.25
0.05 - 0.2
Rusted
0.6 - 0.9
0.5 - 0.8
0.5 - 0.7
Oxidized
0.7 - 0.9
0.5 - 0.9
0.6 - 0.9
0.5 - 0.9
Forget, blunt
0.9
0.9
0.9
0.9
Molten
0.35
0.4 - 0.6
Iron, casted
Non oxidized
0.35
0.3
0.25
0.2
Oxidized
0.9
0.7 - 0.9
0.65 - 0.95
0.6 - 0.95
Lead
Polished
0.35
0.05 - 0.2
0.05 - 0.2
0.05 - 0.1
Roughened
0.65
0.6
0.4
0.4
Oxidized
0.3 - 0.7
0.2 - 0.7
0.2 - 0.6
Magnesium
0.3 - 0.8
0.05 - 0.3
0.03 - 0.15
0.02 - 0.1
Mercury
0.05 - 0.15
0.05 - 0.15
0.05 - 0.15
Molybdenum
Non oxidized
0.25 - 0.35
0.1 - 0.3
0.1 - 0.15
0.1
Oxidized
0.5 - 0.9
0.4 - 0.9
0.3 - 0.7
0.2 - 0.6
Monel (Ni-CU)
0.3
0.2 - 0.6
0.1 - 0.5
0.1 - 0.14
Nickel
Electrolytic
0.2 - 0.4
0.1 - 0.3
0.1 - 0.15
0.05 - 0.15
Oxidized
0.8 - 0.9
0.4 - 0.7
0.3 - 0.6
0.2 - 0.5
Platinum
Black
0.95
0.9
0.9
Silver
0.04
0.02
0.02
0.02
