Fotric 320F Series, User Manual

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118
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
Lacquer
White 100 0.92
Natural color black 100 0.97
Carbon
Smoke black 25 0.95
Candle soot 20 0.95
Graphite rough surface 20 0.98
Paint Average of 16 colors 100 0.94
Paper White 20 0.93
Sand Surface 20 0.90
Wood Polished 20 0.90
Water Distilled water 20 0.96
Skin Human 32 0.98
Pottery
Fine 21 0.90
Abrasive 21 0.93