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
Last Updated: 11/14/18 https://cmsearch.coleparmer.com/ant_assembler/CPDomestic/tech_article_landing?format=json&Ntt=/tech-article/emissivity-of-specific-materials&tlg=en-us go BACK TO TOP