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Section 7 - Emissivity Table
Material
Aluminum – pure highly polished plate . . . . . . . . . . . . . . . . . . . . . . .
Aluminum – heavily oxidized . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Aluminum – commercial sheet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.09
Brass – dull plate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.22
Brass – highly polished, 73.2% Cu, 26.7% Zn . . . . . . . . . . . . . . . . . . . . . . . . 0.03
Chromium – polished . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Copper – polished . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.05
Copper – heated at 600°C (1112°F) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.57
Gold – pure, highly polished or liquid . . . . . . . . . . . . . . . . . . . . . . . .
Iron and steel (excluding stainless) – polished iron . . . . . . . . . . . . . . .
Iron and steel (excluding stainless) – polished cast iron . . . . . . . . . . . . . . . . . . 0.21
Iron and steel (excluding stainless) – polished wrought iron . . . . . . . . . . . . . . . 0.28
Iron and steel (excluding stainless) – oxidized dull wrought iron . . . . . . . . . . . 0.94
Iron and steel (excluding stainless) – rusted iron plate . . . . . . . . . . . . . . . . . . . 0.69
Iron and steel (excluding stainless) – polished steel . . . . . . . . . . . . . . . . . . . . . 0.07
Iron and steel (excluding stainless) – polished steel oxidized at
Iron and steel (excluding stainless) – rolled sheet steel . . . . . . . . . . . . . . . . . . . 0.66
Iron and steel (excluding stainless) – rough steel plate . . . . . . . . . . . . .
Lead – gray and oxidized . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.28
Mercury . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Molybdenum filament . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Nickel – polished . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.07
Nickel – oxidized at 649 to 1254°C (1200°F to 2290°F) . . . . . . . . . .
Platinum – pure polished plate . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Platinum – wire . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Silver – pure and polished . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Stainless steel – polished . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.07
Stainless steel – Type 301 at 232 to 942°C (450°F to 1725°F) . . . . . .
Tin – bright . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.06
Tungsten – filament . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.39
Zinc – polished commercial pure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.05
Zinc – galvanized sheet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.23
OS100E Series - Emissivity Table
600°C (1112°F) . . . . . . . . . . . . . . . . . . . 0.79
7
Emissivity (ε)
0.04 to 0.06
0.20 to 0.31
0.08 to 0.36
0.02 to 0.04
0.14 to 0.38
0.94 to 0.97
0.09 to 0.12
0.10 to 0.20
0.59 to 0.86
0.05 to 0.10
0.07 to 0.18
0.02 to 0.03
0.54 to 0.63
7-1
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