Emissivity of Specific Materials

Emissivity of Specific Materials

Table scrolls horizontally

Adobe
Alloys
Aluminum
Asphalt
Basalt
Bismuth
Brass
Brick
Cadmium
Carbon
Carborundum
Cast iron
Ceramic
Chromium
Clay
Columbium
Concrete
Copper
Cotton cloth
Dolomite lime
Dow metal
Emery corundum
Glass
Gold
Granite
Gravel
Gypsum
Haynes Alloy C., oxidized
Haynes Alloy 25, oxidized
Haynes Alloy X., oxidized
Ice
Inconel
Iron
Lacquer
Lead
Lime mortar
Limestone
Magnesium
Magnesium oxide
Marble
Mercury
Mica
Oil on nickel
Oil, linseed
Paints
Paints, aluminum
Paints, bronze
Paints, oil
Palladium plate
Paper
Plastics (average)
Platinum
Quartz
Red lead
Rhodium flash
Rubber
Sand
Sawdust
Silica
Silver
Slate
Snow
Soil
Steel
Steel alloys
Stellite, polished
Stonework
Tantalum
Tin
Tinned iron
Titanium
Tungsten
Uranium oxide
Water
Wood
Wrought iron
Zinc

The emissivity information below was determined under ideal conditions. Note: Surface contamination such as dust, oil films, or other agents will affect the actual emissivity of your material.

Table scrolls horizontally

MATERIAL
TEMPERATURE EMISSIVITY
°F °C
Adobe 68 20 0.90
MATERIAL TEMPERATURE EMISSIVITY
°F °C
Alloys:
Alloy 24ST, polished 75 24 0.90
Alloy 75ST 75 24 0.11
20-Ni, 25-Cr, 55-Fe, oxidized 392
932
200
500
0.90
0.97
60-Ni, 12-Cr, 28-Fe, oxidized 518
1040
270
560
0.89
0.82
80-Ni, 20-Cr, oxidized 212
1112
2372
100
600
1300
0.87
0.87
0.89
MATERIAL TEMPERATURE EMISSIVITY
°F °C
Aluminum:
Unoxidized 77
212
932
25
100
500
0.02
0.03
0.06
Oxidized 390
1110
199
599
0.11
0.19
Oxidized @1110°F 390
1110
199
599
0.11
0.19
Heavily oxidized 200
940
93
504
0.20
0.31
Highly polished 212 100 0.09
Roughly polished 212 100 0.18
Commercial sheet 212 100 0.09
Highly polished plate 440
1070
227
577
0.04
0.06
Bright rolled plate 338
932
170
500
0.04
0.05
Alloy A3003, oxidized 600
900
315
482
0.40
0.40
Alloy 1100-0 200 to 800 93 to 427 0.05
Alloy 24ST 75 24 0.09
Alloy 24ST, polished 75 24 0.09
Alloy 75ST 75 24 0.11
Alloy 75ST, polished 75 24 0.08
MATERIAL TEMPERATURE EMISSIVITY
°F °C
Asphalt:
Pavement 100 38 0.93
Tar paper 68 20 0.93
MATERIAL TEMPERATURE EMISSIVITY
°F °C
Basalt 68 20 0.72
MATERIAL TEMPERATURE EMISSIVITY
°F °C
Bismuth:
Bright 176 80 0.34
Unoxidized 77
212
25
100
0.05
0.06
MATERIAL TEMPERATURE EMISSIVITY
°F °C
Brass:
Matte 68 20 0.07
Burnished to brown color 68 20 0.40
Cu-Zn, brass oxidized 392
752
1112
200
400
600
0.61
0.60
0.61
Unoxidized 77 25 0.04
Unoxidized 212 100 0.04
MATERIAL TEMPERATURE EMISSIVITY
°F °C
Brick:
Red, rough 70 21 0.93
Gault cream 2500 to 5000 1371 to 2760 0.26 to 0.30
Fire clay 2500 1371 0.75
Light buff 1000 538 0.80
Lime clay 2500 1371 0.43
Fire brick 1832 1000 0.75 to 0.80
Magnesite, refractory 1832 1000 0.38
Gray brick 2012 1100 0.75
Silica, glazed 2000 1093 0.88
Silica, unglazed 2000 1093 0.80
Sandime 2500 to 5000 1371 to 2760 0.59 to 0.63
MATERIAL TEMPERATURE EMISSIVITY
°F °C
Cadmium 77 25 0.02
MATERIAL TEMPERATURE EMISSIVITY
°F °C
Carbon:
Lamp black 77 25 0.95
Unoxidized 77 25 0.81
Unoxidized 212
932
100
500
0.81
0.79
Candle soot 250 121 0.95
Filament 500 260 0.95
Graphitized 212
572
932
100
300
500
0.76
0.75
0.71
MATERIAL TEMPERATURE EMISSIVITY
°F °C
Carborundum 1850 1010 0.92
MATERIAL TEMPERATURE EMISSIVITY
°F °C
Cast iron:
Oxidized 390
1110
199
599
0.64
0.78
Unoxidized 212 100 0.21
Strong oxidation 104
482
40
250
0.95
0.95
Liquid 2795 1535 0.29
MATERIAL TEMPERATURE EMISSIVITY
°F °C
Ceramic:
Alumina on Inconel 800 to 2000 427 to 1093 0.69 to 0.45
Earthenware, glazed 70 21 0.90
Earthenware, matte 70 21 0.93
Greens, No. 5210-2C 200 to 750 93 to 399 0.89 to 0.82
Coating, No. C20A 200 to 750 93 to 399 0.73 to 0.67
Porcelain 72 22 0.92
White, Al2O3 200 93 0.90
Zirconia on Inconel 800 to 2000 427 to 1093 0.62 to 0.45
MATERIAL TEMPERATURE EMISSIVITY
°F °C
Chromium:
Chromium 100
1000
38
538
0.08
0.26
Chromium, polished 302 150 0.06
MATERIAL TEMPERATURE EMISSIVITY
°F °C
Clay: 68 20 0.39
Fired 158 70 0.91
Shale 68 20 0.69
Tiles, light red 2500 to 5000 1371 to 2760 0.32 to 0.34
Tiles, red 2500 to 5000 1371 to 2760 0.40 to 0.51
Tiles, dark purple 2500 to 5000 1371 to 2760 0.78
MATERIAL TEMPERATURE EMISSIVITY
°F °C
Columbium:
Unoxidized 1500
2000
816
1093
0.19
0.24
MATERIAL TEMPERATURE EMISSIVITY
°F °C
Concrete:
Rough 32 to 200 0 to 93 0.94
Tiles, natural 2500 to 5000 1371 to 2760 0.63 to 0.62
Tiles, brown 2500 to 5000 1371 to 2760 0.87 to 0.83
Tiles, black 2500 to 5000 1371 to 2760 0.94 to 0.91
MATERIAL TEMPERATURE EMISSIVITY
°F °C
Copper:
Black, oxidized 100 38 0.78
Etched 100 38 0.09
Matte 100 38 0.22
Roughly polished 100 38 0.07
Polished 100 38 0.03
Highly polished 100 38 0.02
Rolled 100 38 0.64
Rough 100 38 0.74
Molten 1000
1970
2230
538
108
1221
0.15
0.16
0.13
Nickel plated 100 to 500 38 to 260 0.37
MATERIAL TEMPERATURE EMISSIVITY
°F °C
Cotton cloth 68 20 0.77
MATERIAL TEMPERATURE EMISSIVITY
°F °C
Dolomite lime 68 20 0.41
MATERIAL TEMPERATURE EMISSIVITY
°F °C
Dow metal 0 to 600 -18 to 315 0.15
MATERIAL TEMPERATURE EMISSIVITY
°F °C
Emery corundum 176 80 0.86
MATERIAL TEMPERATURE EMISSIVITY
°F °C
Glass:
Convex D 212
600
932
100
315
500
0.80
0.80
0.76
Nonex 212
600
932
100
315
500
0.82
0.82
0.78
Smooth 32 to 200 0 to 93 0.92 to 0.94
MATERIAL TEMPERATURE EMISSIVITY
°F °C
Gold:
Enamel 212 100 0.37
Plate (0.001) on 0.0005 silver 200 to 750 93 to 399 0.11 to 0.14
Plate (0.001) on 0.005 nickel 200 to 750 93 to 399 0.07 to 0.09
Polished 100 to 500
1000 to 2000
38 to 260
538 to 1093
0.02
0.03
MATERIAL TEMPERATURE EMISSIVITY
°F °C
Granite 70 21 0.45
MATERIAL TEMPERATURE EMISSIVITY
°F °C
Gravel 100 38 0.28
MATERIAL TEMPERATURE EMISSIVITY
°F °C
Gypsum 68 20 0.80 to 0.90
MATERIAL TEMPERATURE EMISSIVITY
°F °C
Haynes Alloy C., oxidized 600 to 2000 316 to 1093 0.90 to 0.96
MATERIAL TEMPERATURE EMISSIVITY
°F °C
Haynes Alloy 25, oxidized 600 to 2000 316 to 1093 0.86 to 0.89
MATERIAL TEMPERATURE EMISSIVITY
°F °C
Haynes Alloy X., oxidized 600 to 2000 316 to 1093 0.85 to 0.88
MATERIAL TEMPERATURE EMISSIVITY
°F °C
Ice:
Smooth 32 0 0.97
Rough 32 0 0.98
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