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| Note: Because the emissivity of a given material will vary with temperature and surface finish, the value in these tables should be used only as a guide for relative or differential temperature measurements. The exact emissivity of a material should be determined when high accuracy is required. |
Non-Metals Index
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| NON-METALS | ||
| MATERIAL | TEMP °F (°C) | e-EMISSIVITY |
| Adobe | 68 (20) | .90 |
| MATERIAL | TEMP °F (°C) | e-EMISSIVITY |
| 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 |
| MATERIAL | TEMP °F (°C) | e-EMISSIVITY |
| Basalt | 68 (20) | .72 |
| MATERIAL | TEMP °F (°C) | e-EMISSIVITY |
| 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 |
| MATERIAL | TEMP °F (°C) | e-EMISSIVITY |
| Carborundum | 1850 (1010) | .92 |
| MATERIAL | TEMP °F (°C) | e-EMISSIVITY |
| 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 |
| MATERIAL | TEMP °F (°C) | e-EMISSIVITY |
| 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 |
| MATERIAL | TEMP °F (°C) | e-EMISSIVITY |
| 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 |
| MATERIAL | TEMP °F (°C) | e-EMISSIVITY |
| Cotton Cloth | 68 (20) | .77 |
| MATERIAL | TEMP °F (°C) | e-EMISSIVITY |
| Dolomite Lime | 69 (20) | .41 |
| MATERIAL | TEMP °F (°C) | e-EMISSIVITY |
| Emory Corundum | 176 (80) | .86 |
| MATERIAL | TEMP °F (°C) | e-EMISSIVITY |
| 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 |
| MATERIAL | TEMP °F (°C) | e-EMISSIVITY |
| Granite | 70 (21) | .45 |
| MATERIAL | TEMP °F (°C) | e-EMISSIVITY |
| Gravel | 100 (38) | .28 |
| MATERIAL | TEMP °F (°C) | e-EMISSIVITY |
| Gypsum | 68 (20) | .80-.90 |
| MATERIAL | TEMP °F (°C) | e-EMISSIVITY |
| Ice | ||
| Smooth | 32 (0) | .97 |
| Rough | 32 (0) | .98 |
| MATERIAL | TEMP °F (°C) | e-EMISSIVITY |
| 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) |
| MATERIAL | TEMP °F (°C) | e-EMISSIVITY |
| Lime Mortar | 100-500 (38-260) | .90-.92 |
| MATERIAL | TEMP °F (°C) | e-EMISSIVITY |
| Limestone | 100 (38) | .95 |
| MATERIAL | TEMP °F (°C) | e-EMISSIVITY |
| Marble | ||
| White | 100 (38) | .95 |
| Smooth, White | 100 (38) | .56 |
| Polished Gray | 100 (38) | .75 |
| MATERIAL | TEMP °F (°C) | e-EMISSIVITY |
| Mica | 100 (38) | .75 |
| MATERIAL | TEMP °F (°C) | e-EMISSIVITY |
| Oil on Nickel | ||
| 0.001 Film | 72 (22) | .27 |
| 0.002 Film | 72 (22) | .46 |
| 0.005 Film | 72 (22) | .72 |
| Thick Film | 72 (22) | .82 |
| MATERIAL | TEMP °F (°C) | e-EMISSIVITY |
| 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 |
| MATERIAL | TEMP °F (°C) | e-EMISSIVITY |
| 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 |
| MATERIAL | TEMP °F (°C) | e-EMISSIVITY |
| Paints, Aluminium | 100 (38) | .27-.67 |
| 10% Al | 100 (38) | .52 |
| 26% Al | 100 (38) | .30 |
| Dow XP-310 | 200 (93) | .22 |
| MATERIAL | TEMP °F (°C) | e-EMISSIVITY |
| Paints, Bronze | ||
| Gum Varnish (2 coats) | 70 (21) | .53 |
| Gum Varnish (3 coats) | 70 (21) | .50 |
| Cellulose Binder (2 coats) | 70 (21) | .34 |
| MATERIAL | TEMP °F (°C) | e-EMISSIVITY |
| Paints, Oil | ||
| All colors | 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 |
| MATERIAL | TEMP °F (°C) | e-EMISSIVITY |
| 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 |
| MATERIAL | TEMP °F (°C) | e-EMISSIVITY |
| Red Lead | 212 (100) | .933 |
| MATERIAL | TEMP °F (°C) | e-EMISSIVITY |
| Rubber | ||
| Hard | 74 (23) | .94 |
| Soft, Gray | 76 (24) | .86 |
| MATERIAL | TEMP °F (°C) | e-EMISSIVITY |
| Sand | 68 (20) | .76 |
| MATERIAL | TEMP °F (°C) | e-EMISSIVITY |
| Sandstone | 100 (38) | .67 |
| MATERIAL | TEMP °F (°C) | e-EMISSIVITY |
| Sandstone, Red | 100 (38) | .60-.83 |
| MATERIAL | TEMP °F (°C) | e-EMISSIVITY |
| Sawdust | 68 (20) | .75 |
| MATERIAL | TEMP °F (°C) | e-EMISSIVITY |
| Shale | 68 (20) | .69 |
| MATERIAL | TEMP °F (°C) | e-EMISSIVITY |
| Silica | ||
| Glazed | 1832 (1000) | .85 |
| Unglazed | 2012 (1100) | .75 |
| MATERIAL | TEMP °F (°C) | e-EMISSIVITY |
| Silicon Carbide | 300-1200 (149-169) | .83-.96 |
| MATERIAL | TEMP °F (°C) | e-EMISSIVITY |
| Silk Cloth | 68 (20) | .78 |
| MATERIAL | TEMP °F (°C) | e-EMISSIVITY |
| Slate | 100 (38) | .67-.80 |
| MATERIAL | TEMP °F (°C) | e-EMISSIVITY |
| Snow | ||
| Fine Particles | 20 (-7) | .82 |
| Granular | 18 (-8) | .89 |
| MATERIAL | TEMP °F (°C) | e-EMISSIVITY |
| Soil | ||
| Surface | 100 (38) | .38 |
| Black Loam | 68 (20) | .66 |
| Plowed Field | 68 (20) | .38 |
| MATERIAL | TEMP °F (°C) | e-EMISSIVITY |
| Soot | ||
| Acetylene | 75 (24) | .97 |
| Camphor | 75 (24) | .94 |
| Candle | 250 (121) | .95 |
| Coal | 68 (20) | .95 |
| MATERIAL | TEMP °F (°C) | e-EMISSIVITY |
| Stonework | 100 (38) | .93 |
| MATERIAL | TEMP °F (°C) | e-EMISSIVITY |
| Water | 100 (38) | .67 |
| MATERIAL | TEMP °F (°C) | e-EMISSIVITY |
| Waterglass | 68 (20) | .96 |
| MATERIAL | TEMP °F (°C) | e-EMISSIVITY |
| Wood | Low | .80-.90 |
| Beech, Planed | 158 (70) | .94 |
| Oak, Planed | 100 (38) | .91 |
| Spruce, Sanded | 100 (38) | .89 |
