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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