Fotric 340M Series, User Manual

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Appendix
Emissivity Table
（
For reference only
）
Material Name Surface Condition Temperature
(℃）
Emissivity
(ε）
Aluminum
Non-oxidized 100 0.20
Oxidized 100 0.55
Brass
Polished brown 20 0.40
Unpolished 38 0.22
Oxidized 100 0.61
Copper Severely oxidized 20 0.78
Iron
Oxidized 100 0.74
Rusty 25 0.65
Cast iron
Oxidized 200 0.64
Non-oxidized 100 0.21
Wrought iron
Roughened 25 0.94
Polished 38 0.28
Nickel Oxidized 200 0.37
Stainless steel Oxidized 60 0.85
Steel Oxidized at 800 ℃ 200 0.79
Common brick Surface 20 0.93
Concrete Surface 20 0.92
Glass Polished plate 20 0.94