Emissivity tables40
Table 40.1 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
Iron and steel rusty, red 20 T 0.69 1
Iron and steel shiny oxide layer,
sheet,
20 T 0.82 1
Iron and steel shiny, etched 150 T 0.16 1
Iron and steel wrought, carefully
polished
40–250 T 0.28 1
Iron galvanized heavily oxidized 70
SW
0.64 9
Iron galvanized heavily oxidized 70 LW 0.85 9
Iron galvanized sheet 92 T 0.07 4
Iron galvanized sheet, burnished 30 T 0.23 1
Iron galvanized sheet, oxidized 20 T 0.28 1
Iron tinned sheet 24 T 0.064 4
Iron, cast casting 50 T 0.81 1
Iron, cast ingots 1000 T 0.95 1
Iron, cast liquid 1300 T 0.28 1
Iron, cast machined 800–1000 T 0.60–0.70 1
Iron, cast oxidized 100 T 0.64 2
Iron, cast oxidized 260 T 0.66 4
Iron, cast oxidized 38 T 0.63 4
Iron, cast oxidized 538 T 0.76 4
Iron, cast oxidized at 600°C
200–600 T 0.64–0.78 1
Iron, cast polished 200 T 0.21 1
Iron, cast polished 38 T 0.21 4
Iron, cast polished 40 T 0.21 2
Iron, cast unworked 900–1100 T 0.87–0.95 1
Krylon Ultra-flat
black 1602
Flat black Room tempera-
ture up to 175
LW ≈ 0.96 12
Krylon Ultra-flat
black 1602
Flat black Room tempera-
ture up to 175
MW ≈ 0.97 12
Lacquer 3 colors sprayed
on Aluminum
70
SW
0.50–0.53 9
Lacquer 3 colors sprayed
on Aluminum
70 LW 0.92–0.94 9
Lacquer Aluminum on
rough surface
20 T 0.4 1
Lacquer bakelite 80 T 0.83 1
Lacquer black, dull 40–100 T 0.96–0.98 1
Lacquer black, matte 100 T 0.97 2
Lacquer black, shiny,
sprayed on iron
20 T 0.87 1
Lacquer heat–resistant 100 T 0.92 1
Lacquer white 100 T 0.92 2
Lacquer white 40–100 T 0.8–0.95 1
Lead oxidized at 200°C
200 T 0.63 1
Lead oxidized, gray 20 T 0.28 1
#T559954; r. AP/42311/42335; en-US
238
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