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Table de materiales segun su emisión


Material					Temp F (C)		Emissivity
Metals
Alloys
	20-Ni, 24-CR, 55-FE, Oxid.		392 (200)		.90
	20-Ni, 24-CR, 55-FE, Oxid.		932 (500)		.97
	60-Ni, 12-CR, 28-FE, Oxid.		518 (270)		.89
	60-Ni, 12-CR, 28-FE, Oxid.		1040 (560)		.82
	80-Ni, 20-CR, Oxidised 			212 (100)		.87
	80-Ni, 20-CR, Oxidised 			1112 (600)		.87
	80-Ni, 20-CR, Oxidised 			2372 (1300)		.89
Aluminium
	Unoxidised				77 (25)			.02
	Unoxidised				212 (100)		.03
	Unoxidised				932 (500)		.06
	Oxidised				390 (199)		.11
	Oxidised				1110 (599)		.19
	Oxidised at 599¡C (1110¡F)		390 (199)		.11
	Oxidised at 599¡C (1110¡F)		1110 (599)		.19
	Heavily Oxidised			200 (93)		.20
	Heavily Oxidised			940 (504)		.31
	Highly Polished				212 (100)		.09
	Roughly Polished			212 (100)		.18
	Commercial Sheet			212 (100)		.09
	Highly Polished Plate			440 (227)		.04
	Highly Polished Plate			1070 (577)		.06
	Bright Rolled Plate			338 (170)		.04
	Bright Rolled Plate			932 (500)		.05
	Alloy A3003, Oxidised			600 (316)		.40
	Alloy A3003, Oxidised			900 (482)		.40
	Alloy 1100-0				200-800 (93-427)	.05
	Alloy 24ST				75 (24)			.09
	Alloy 24ST, Polished			75 (24)			.09
	Alloy 75ST				75 (24)			.11
	Alloy 75ST, Polished			75 (24)			.08
Bismuth, Bright					176 (80)		.34
Bismuth, Unoxidised				77 (25)			.05
Bismuth, Unoxidised				212 (100)		.06
Brass
	73% Cu, 27% Zn, Polished		476 (247)		.03
	73% Cu, 27% Zn, Polished		674 (357)		.03
	62% Cu, 37% Zn, Polished		494 (257)		.03
	62% Cu, 37% Zn, Polished		710 (377)		.04
	83% Cu, 17% Zn, Polished		530 (277)		.03
	Matte					68 (20)			.07
	Burnished to Brown Colour		68 (20)			.40
	Cu-Zn, Brass Oxidised			392 (200)		.61
	Cu-Zn, Brass Oxidised			752 (400)		.60
	Cu-Zn, Brass Oxidised			1112 (600)		.61
	Unoxidised				77 (25)			.04
	Unoxidised				212 (100)		.04
Cadmium						77 (25)			.02
Carbon
	Lampblack				77 (25)			.95
	Unoxidised				77 (25)			.81
	Unoxidised				212 (100)		.81
	Unoxidised				932 (500)		.79
	Candle Soot				250 (121)		.95
	Filament				500 (260)		.95
	Graphitized				212 (100)		.76
	Graphitized				572 (300)		.75
	Graphitized				932 (500)		.71
Chromium					100 (38)		.08
Chromium					1000 (538)		.26
Chromium, Polished				302 (150)		.06
Cobalt, Unoxidised				932 (500)		.13
Cobalt, Unoxidised				1832 (1000)		.23
Columbium, Unoxidised				1500 (816)		.19
Columbium, Unoxidised				2000 (1093)		.24
Copper
	Cuprous Oxide				100 (38)		.87
	Cuprous Oxide				500 (260)		.83
	Cuprous Oxide				1000 (538)		.77
	Black, Oxidised				100 (38)		.78
	Etched					100 (38)		.09
	Matte					100 (38)		.22
	Roughly Polished			100 (38)		.07
	Polished				100 (38)		.03
	Highly Polished				100 (38)		.02
	Rolled					100 (38)		.64
	Rough					100 (38)		.74
	Molten					1000 (538)		.15
	Molten					1970 (1077)		.16
	Molten					2230 (1221)		.13
	Nickel Plated				100-500 (38-260)	.37
Dow Metal					0.4-600 (Ð18-316)	.15
Gold
	Enamel					212 (100)		.37
	Plate (.0001)
	Plate on .0005 Silver			200-750 (93-399)	.11-.14
	Plate on .0005 Nickel			200-750 (93-399)	.07-.09
	Polished				100-500 (38-260)	.02
	Polished				1000-2000 (538-1093)	.03
Haynes Alloy C,
	Oxidised				600-2000 (316-1093)	.90-.96
Haynes Alloy 25,
	Oxidised				600-2000 (316-1093)	.86-.89
Haynes Alloy X,
	Oxidised				600-2000 (316-1093)	.85-.88
Inconel Sheet					1000 (538)		.28
Inconel Sheet					1200 (649)		.42
Inconel Sheet					1400 (760)		.58
Inconel X, Polished				75 (24)			.19
Inconel B, Polished				75 (24)			.21
Iron
	Oxidised				212 (100)		.74
	Oxidised				930 (499)		.84
	Oxidised				2190 (1199)		.89
	Unoxidised				212 (100)		.05
	Red Rust				77 (25)			.70
	Rusted					77 (25)			.65
	Liquid					2760-3220 (1516-1771)	.42-.45
Cast Iron
	Oxidised				390 (199)		.64
	Oxidised				1110 (599)		.78
	Unoxidised				212 (100)		.21
	Strong Oxidation			40 (104)		.95
	Strong Oxidation			482 (250)		.95
	Liquid					2795 (1535)		.29
Wrought Iron
	Dull					77 (25)			.94
	Dull					660 (349)		.94
	Smooth					100 (38)		.35
	Polished				100 (38)		.28
Lead
	Polished				100-500 (38-260)	.06-.08
	Rough					100 (38)		.43
	Oxidised				100 (38)		.43
	Oxidised at 1100¡F			100 (38)		.63
	Gray Oxidised				100 (38)		.28
Magnesium					100-500 (38-260)	.07-.13
Magnesium Oxide					1880-3140 (1027-1727)	.16-.20
Mercury						32 (0)			.09
	"					77 (25)			.10
	"					100 (38)		.10
	"					212 (100)		.12
Molybdenum					100 (38)		.06
	"					500 (260)		.08
	"					1000 (538)		.11
	"					2000 (1093)		.18
	" Oxidised at 1000¡F			600 (316)		.80
	" Oxidised at 1000¡F			700 (371)		.84
	" Oxidised at 1000¡F			800 (427)		.84
	" Oxidised at 1000¡F			900 (482)		.83
	" Oxidised at 1000¡F			1000 (538)		.82
Monel, Ni-Cu					392 (200)		.41
Monel, Ni-Cu					752 (400)		.44
Monel, Ni-Cu					1112 (600)		.46
Monel, Ni-Cu Oxidised				68 (20)			.43
Monel, Ni-Cu Oxid. at 1110¡F			1110 (599)		.46
Nickel
	Polished				100 (38)		.05
	Oxidised				100-500 (38-260)	.31-.46
	Unoxidised				77 (25)			.05
	Unoxidised				212 (100)		.06
	Unoxidised				932 (500)		.12
	Unoxidised				1832 (1000)		.19
	Electrolytic				100 (38)		.04
	Electrolytic				500 (260)		.06
	Electrolytic				1000 (538)		.10
	Electrolytic				2000 (1093)		.16
Nickel Oxide					1000-2000 (538-1093)	.59-.86
Palladium Plate (.00005
	 on .0005 silver)			200-750 (93-399)	.16-.17
Platinum					100 (38)		.05
	"					500 (260)		.05
	"					1000 (538)		.10
Platinum, Black					100 (38)		.93
	"					500 (260)		.96
	"					2000 (1093)		.97
	" Oxidised at 1100¡F			500 (260)	.07
	"					1000 (538)		.11
Rhodium Flash (0.0002
	on 0.0005 Ni)				200-700 (93-371)	.10-.18
Silver
	Plate (0.0005 on Ni)			200-700 (93-371)	.06-.07
	Polished				100 (38)		.01
	"					500 (260)		.02
	"					1000 (538)		.03
	"					2000 (1093)		.03
Steel
	Cold Rolled				200 (93)		.75-.85
	Ground Sheet				1720-2010 (938-1099)	.55-.61
	Polished Sheet				100 (38)		.07
	"					500 (260)		.10
	"					1000 (538)		.14
	Mild Steel, Polished			75 (24)			.10
	Mild Steel, Smooth			75 (24)			.12
	Mild Steel,
	ÊLiquid					2910-3270 (1599-1793)	.28
	Steel, Unoxidised			212 (100)		.08
	Steel, Oxidised				77 (25)			.80
Steel Alloys
	Type 301, Polished			75 (24)			.27
	Type 301, Polished			450 (232)		.57
	Type 301, Polished			1740 (949)		.55
	Type 303, Oxidised			600-2000 (316-1093)	.74-.87
	Type 310, Rolled			1500-2100 (816-1149)	.56-.81
	Type 316, Polished			75 (24)			.28
	Type 316, Polished			450 (232)		.57
	Type 316, Polished			1740 (949)		.66
	Type 321				200-800 (93-427)	.27-.32
	Type 321 Polished			300-1500 (149-815)	.18-.49
	Type 321 w/BK Oxide			200-800 (93-427)	.66-.76
	Type 347, Oxidised			600-2000 (316-1093)	.87-.91
	Type 350				200-800 (93-427)	.18-.27
	Type 350 Polished			300-1800 (149-982)	.11-.35
	Type 446, Polished			300-1500 (149-815)	.15-.37
	Type 17-7 PH				200-600 (93-316)	.44-.51
	Type 17-7 PH
	ÊPolished				300-1500 (149-815)	.09-.16
	Type C1020,
	ÊOxidised				600-2000 (316-1093)	.87-.91
	Type PH-15-7 MO				300-1200 (149-649)	.07-.19
Stellite, Polished				68 (20)			.18
Tantalum, Unoxidised				1340 (727)		.14
	"					2000 (1093)		.19
	"					3600 (1982)		.26
	"					5306 (2930)		.30
Tin, Unoxidised					77 (25)			.04
	"					212 (100)		.05
Tinned Iron, Bright				76 (24)			.05
	"					212 (100)		.08
Titanium
	Alloy C110M,
	Polished				300-1200 (149-649)	.08-.19
	" Oxidised at
	538C (1000F)				200-800 (93-427)	.51-.61
	Alloy Ti-95A,
	Oxid. at
	538C (1000F)				200-800 (93-427)	.35-.48
	Anodized onto SS			200-600 (93-316)	.96-.82

Tungsten
	Unoxidised				77 (25)			.02
	Unoxidised				212 (100)		.03
	Unoxidised				932 (500)		.07
	Unoxidised				1832 (1000)		.15
	Unoxidised				2732 (1500)		.23
	Unoxidised				3632 (2000)		.28
	Filament (Aged)				100 (38)		.03
	Filament (Aged)				1000 (538)		.11
	Filament (Aged)				5000 (2760)		.35
Uranium Oxide					1880 (1027)		.79
Zinc
	Bright, Galvanised			100 (38)		.23
	Commercial 99.1%			500 (260)		.05
	Galvanised				100 (38)		.28
	Oxidised				500-1000 (260-538)	.11
	Polished				100 (38)		.02
	Polished				500 (260)		.03
	Polished				1000 (538)		.04
	Polished				2000 (1093)		.06

Non-Metals
Adobe						68 (20)			.90
Asbestos
	Board					100 (38)		.96
	Cement					32-392 (0-200)		.96
	Cement, Red				2500 (1371)		.67
	Cement, White				2500 (1371)		.65
	Cloth					199 (93)		.90
	Paper					100-700 (38-371)	.93
	Slate					68 (20)			.97
	Asphalt, pavement			100 (38)		.93
	Asphalt, tar paper			68 (20)			.93
Basalt						68 (20)			.72
Brick
	Red, rough				70 (21)			.93
	Gault Cream				2500-5000 (1371-2760)	.26-.30
	Fire Clay				2500 (1371)		.75
	Light Buff				1000 (538)		.80
	Lime Clay				2500 (1371)		.43
	Fire Brick				1832 (1000)		.75-.80
	Magnesite, Refractory			1832 (1000)		.38
	Grey Brick				2012 (1100)		.75
	Silica, Glazed				2000 (1093)		.88
	Silica, Unglazed			2000 (1093)		.80
	Sandlime				2500-5000 (1371-2760)	.59-.63
Carborundum					1850 (1010)		.92
Ceramic
	Alumina on Inconel			800-2000 (427-1093)	.69-.45
	Earthenware, Glazed			70 (21)			.90
	Earthenware, Matte			70 (21)			.93
	Greens No. 5210-2C			200-750 (93-399)	.89-.82
	Coating No. C20A			200-750 (93-399)	.73-.67
	Porcelain				72 (22)			.92
	White Al2O3				200 (93)		.90
	Zirconia on Inconel			800-2000 (427-1093)	.62-.45
Clay						68 (20)			.39
	" Fired					158 (70)		.91
	" Shale					68 (20)			.69
	" Tiles, Light Red			2500-5000 (1371-2760)	.32-.34
	" Tiles, Red				2500-5000 (1371-2760)	.40-.51
	" Tiles,
	Dark Purple				2500-5000 (1371-2760)	.78
Concrete
	Rough					32-2000 (0-1093)	.94
	Tiles, Natural				2500-5000 (1371-2760)	.63-.62
	 " Brown				2500-5000 (1371-2760)	.87-.83
	 " Black				2500-5000 (1371-2760)	.94-.91
Cotton Cloth					68 (20)			.77
Dolomite Lime					68 (20)			.41
Emery Corundum					176 (80)		.86
Glass
	Convex D				212 (100)		.80
	Convex D				600 (316)		.80
	Convex D				932 (500)		.76
	Nonex					212 (100)		.82
	Nonex					600 (316)		.82
	Nonex					932 (500)		.78
	Smooth					32-200 (0-93)		.92-.94
Granite						70 (21)			.45
Gravel						100 (38)		.28
Gypsum						68 (20)			.80-.90
Ice, Smooth					32 (0)			.97
Ice, Rough					32 (0)			.98
Lacquer
	Black					200 (93)		.96
	Blue, on Al Foil			100 (38)		.78
	Clear, on Al Foil (2 coats)		200 (93)		.08 (.09)
	Clear, on Bright Cu			200 (93)		.66
	Clear, on Tarnished Cu			200 (93)		.64
	Red, on Al Foil (2 coats)		100 (38)		.61 (.74)
	White	200 (93)	.95
	White, on Al Foil (2 coats)		100 (38)		.69 (.88)
	Yellow, on Al Foil (2 coats)		100 (38)		.57 (.79)
Lime Mortar					100-500 (38-260)	.90-.92
Limestone					100 (38)		.95
Marble, White					100 (38)		.95
	" Smooth, White				100 (38)		.56
	" Polished Grey				100 (38)		.75
Mica						100 (38)		.75
Oil on Nickel
	0.001 Film				72 (22)			.27
	0.002 "					72 (22)			.46
	0.005 "					72 (22)			.72
	Thick "					72 (22)			.82
Oil, Linseed
	On Al Foil, uncoated			250 (121)		.09
	On Al Foil, 1 coat			250 (121)		.56
	On Al Foil, 2 coats			250 (121)		.51
	On Polished Iron, .001 Film		100 (38)		.22
	On Polished Iron, .002 Film 		100 (38)		.45
	On Polished Iron, .004 Film		100 (38)		.65
	On Polished Iron, Thick Film		100 (38)		.83
Paints
	Blue, Cu2O3				75 (24)			.94
	Black, CuO				75 (24)			.96
	Green, Cu2O3				75 (24)			.92
	Red, Fe2O3				75 (24)			.91
	White, Al2O3				75 (24)			.94
	White, Y2O3				75 (24)			.90
	White, ZnO				75 (24)			.95
	White, MgCO3				75 (24)			.91
	White, ZrO2				75 (24)			.95
	White, ThO2				75 (24)			.90
	White, MgO				75 (24)			.91
	White, PbCO3				75 (24)			.93
	Yellow, PbO				75 (24)			.90
	Yellow, PbCrO4				75 (24)			.93
Paints, Aluminium				100 (38)		.27-.67
	10% Al					100 (38)		.52
	26% Al					100 (38)		.30
	Dow XP-310				200 (93)		.22
Paints, Bronze					Low			.34-.80
	Gum Varnish (2 coats)			70 (21)			.53
	Gum Varnish (3 coats)			70 (21)			.50
	Cellulose Binder (2 coats)		70 (21)			.34
Paints, Oil
	All colours				200 (93)		.92-.96
	Black					200 (93)		.92
	Black Gloss				70 (21)			.90
	Camouflage Green			125 (52)		.85
	Flat Black				80 (27)			.88
	Flat White				80 (27)			.91
	Grey-Green				70 (21)			.95
	Green					200 (93)		.95
	Lamp Black				209 (98)		.96
	Red					200 (93)		.95
	White					200 (93)		.94
Quartz, Rough, Fused				70 (21)			.93
	Glass, 1.98 mm				540 (282)		.90
	Glass, 1.98 mm				1540 (838)		.41
	Glass, 6.88 mm				540 (282)		.93
	Glass, 6.88 mm				1540 (838)		.47
	Opaque					570 (299)		.92
	Opaque					1540 (838)		.68
Red Lead					212 (100)		.93
Rubber, Hard					74 (23)			.94
Rubber, Soft, Grey				76 (24)			.86
Sand						68 (20)			.76
Sandstone					100 (38)		.67
Sandstone, Red					100 (38)		.60-.83
Sawdust						68 (20)			.75
Shale						68 (20)			.69
Silica,Glazed					1832 (1000)		.85
Silica, Unglazed				2012 (1100)		.75
Silicon Carbide					300-1200 (149-649)	.83-.96
Silk Cloth					68 (20)			.78
Slate						100 (38)		.67-.80
Snow, Fine Particles				20 (Ð7)			.82
Snow, Granular					18 (Ð8)			.89
Soil
	Surface					100 (38)		.38
	Black Loam				68 (20)			.66
	Plowed Field				68 (20)			.38
Soot
	Acetylene				75 (24)			.97
	Camphor					75 (24)			.94
	Candle					250 (121)		.95
	Coal					68 (20)			.95
Stonework					100 (38)		.93
Water						100 (38)		.67
Waterglass					68 (20)			.96
Wood						Low			.80-.90
	Beech P!aned				158 (70)		.94
	Oak, Planed				100 (38)		.91
	Spruce, Sanded				100 (38)		.89

 

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