Emissivity tables22
Table 22.1 T: Total spectrum; SW: 2–5 µm; LW: 8–14 µm, LLW: 6.5–20 µm; 1: Material; 2: Specification; 3:
Temperature in °C; 4: Spectrum; 5: Emissivity: 6:Reference (continued)
1 2 3 4 5 6
Emery
coarse 80 T 0.85 1
Enamel 20 T 0.9 1
Enamel lacquer 20 T 0.85–0.95 1
Fiber board hard, untreated 20
SW
0.85 6
Fiber board masonite 70
SW
0.75 9
Fiber board masonite 70 LW 0.88 9
Fiber board particle board 70
SW
0.77 9
Fiber board particle board 70 LW 0.89 9
Fiber board porous, untreated 20
SW
0.85 6
Gold polished 130 T 0.018 1
Gold polished, carefully
200–600 T 0.02–0.03 1
Gold
polished, highly 100 T 0.02 2
Granite
polished 20 LLW 0.849 8
Granite rough 21 LLW 0.879 8
Granite rough, 4 different
samples
70
SW
0.95–0.97 9
Granite rough, 4 different
samples
70 LW 0.77–0.87 9
Gypsum
20 T 0.8–0.9 1
Ice: See Water
Iron and steel cold rolled 70
SW
0.20 9
Iron and steel cold rolled 70 LW 0.09 9
Iron and steel covered with red
rust
20 T 0.61–0.85 1
Iron and steel electrolytic 100 T 0.05 4
Iron and steel electrolytic 22 T 0.05 4
Iron and steel electrolytic 260 T 0.07 4
Iron and steel electrolytic, care-
fully polished
175–225 T 0.05–0.06 1
Iron and steel freshly worked
with emery
20 T 0.24 1
Iron and steel ground sheet 950–1100 T 0.55–0.61 1
Iron and steel heavily rusted
sheet
20 T 0.69 2
Iron and steel hot rolled 130 T 0.60 1
Iron and steel hot rolled 20 T 0.77 1
Iron and steel oxidized 100 T 0.74 4
Iron and steel oxidized 100 T 0.74 1
Iron and steel oxidized 1227 T 0.89 4
Iron and steel oxidized 125–525 T 0.78–0.82 1
Iron and steel oxidized 200 T 0.79 2
Iron and steel oxidized 200–600 T 0.80 1
#T559770; r. AF/30726/30726; en-US
137
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