15
E N G L I S H
E N G L I S H
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
Aluminum (polisned prate 98.3%)
227/400
577/1070
0.04
0.06
Aluminum (rough plate)
26/78
0.06
Aluminum (oxidized @599oC)
199/390
599/1110
0.11
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
599/1110
0.18
0.19
Steel
199/390
599/1110
0.52
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
22/72
0.93
Asbestos board
23/74
0.96
Asbestos paper
38/100
371/700
0.93
0.95
Asphalt (paving)
4/39
0.97
