Sentry ST-677, Instruction Manual

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Emissivity Table
Material
Temp C/ F
° °
Emissivity
Gold(
pure highly polished
) 227/440 0.02
Aluminum foil
27/81 0.04
Aluminum disc 27/81 0.18
Aluminum household(
flat
) 23/73
0.01
577/1070 0.06
Aluminum(
rough plate
) 26/78 0.06
Aluminum(
oxidized @599 C
)
°
199/390 0.11
599/1110 0.19
Aluminum surfaced roofing 38/100 0.22
Tin(
bright tinned iron sheet
) 25/77
0.04
Nickel wire 187/368
0.1
Lead(
pure 99.95-unoxidized
) 127/260 0.06
Copper 199/390 0.18
599/1110
0.19
Steel 199/390 0.52
599/1110 0.57
Zinc galvanized sheet iron(
bright
) 28/82
0.23
Brass(
highly polished
): 247/476 0.03
Brass(
hard rolled-polished w/lines
): 21/70 0.04
Iron galvanized(
bright
) -
0.13
Iron plate(
completely
) 20/68
0.69
Rolled sheet steel 21/71 0.66
Oxidized iron 100/212 0.74
Wrought iron 21/70 0.94
Molten iron
1299-1399/3270-2550
0.29
Copper(
polished
) 21-117/70-242 0.02
Copper(
scraped shiny not mirrored
) 22/72
0.07
Copper(
Plate heavily oxidized
) 25/77 0.78
Enamel(
white fused on iron
) 19/66 0.9
Formica 27/81
0.94
Frozen soil -
0.93
Brick(
red-rough
) 21/70 0.93
Brick(
silica-unglazed rough
) 1000/1832
0.8
Carbon(
T-carbon 0.9% ash
) 127/260
0.81
Concrete - 0.94
Glass(
smooth
) 22/72 0.94
Granite(
polished
) 21/70 0.85
Ice 0/32
0.97
Marble(
light gray polished
) 22/72 0.93
Asbestos board 23/74
0.96
Asbestos paper 38/100 0.93
371/700
0.95
Asphalt(
paving
) 4/39 0.97
Aluminum (
polisned prate 98.3%
) 227/400
0.04
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