Emissivity Table for Infrared Thermometer Readings

1 Emissivity Table for Infrared Thermometer Readings Material Emissivity Value Adobe Alloy: 20Ni-25Cr-55Fe, oxidized - Alloy: 60Ni-12Cr-28Fe, oxidized - Alloy: 80Ni-20Cr, oxidized - Alloy: 24ST Alloy: 24ST, polished Alloy: A3003, oxidized Alloy: 1100-0 Alloy: 75ST Alloy: 75ST, polished Alumel: Unoxidized - Alumel: Oxidized Alumina: Flame Sprayed Aluminum: Polished - Aluminum: Highly polished - Aluminum: Highly polished Plate - Aluminum: Roughly polished Aluminum: Bright Rolled Plate - Aluminum: Unoxidized - Aluminum: Oxidized - Aluminum: Heavily oxidized - Aluminum: Commercial Sheet Aluminum: Rough - Aluminum: Anodized - Aluminum: Almite treatment Aluminum Foil Aluminum Oxide Aluminum Paint - Antimony: Polished - Asbestos: Board/Cement Asbestos: Cement, red Asbestos: Cement, white Asbestos: Cloth Asbestos: Paper - Asbestos: Slate Asphalt - Asphalt: Pavement Material Emissivity Value Asphalt: Tar Paper Asphalt: Oil, on polished metal.

2 001" Thick Asphalt: Oil, on polished metal .002" Thick Asphalt: Oil, on polished metal .005" Thick Basalt Beryllium Beryllium: Anodized Bismuth: Oxidized Bismuth: Unoxidized - Bismuth: Bright Black Body Matt Black Epoxy Paint Black Parson Optical Black Platinum Black Silicone Paint Brass: Polished Brass: Unoxidized - Brass: Oxidized - Brass: Oxidized 600oC Brass: Burnished - Brass: Rolled Sheet/Plate Natural Surface Brass: Dull Plate Brass: 73% Cu, 27% Zn, polished Brass: 62% Cu, 37% Zn, polished - Brass: 83% Cu, 17% Zn, polished Brass: Cu-Zn, oxidized - Brass: Matte Brick: Building Brick: Red, rough, no gross irregularities Brick: Gault Cream - Brick: Grog, glazed Brick: Silica Brick Brick.

3 Silica, glazed Brick: Silica, unglazed Brick: Fire Clay Brick: Fire Brick - Material Emissivity Value Brick: Light Buff Brick: Lime Clay Brick: Magnesite, refractory Brick: Gray Brick: Sandlime - Bronze: Polished Cadmium Carbon: Unoxidized - Carbon: Filament - Carbon: Soot applied to solid/with water glass - Carbon: Coke - Carbon: Graphite - Carbon: Graphite, pressed, filed surface Carbon: Lamp Black, water glass coating - Carborundum - Cardboard Carpet - Cement Ceramic - Ceramic: Alumina on Inconel - Ceramic: Earthenware Ceramic: Earthenware, Glazed Ceramic: Earthenware, Matte Ceramic: Greens No. 5210-2C - Ceramic: Coating No.

4 C20A - Ceramic: Porcelain Ceramic: Refractory Black Ceramic: Refractory White / White Al2O3 Ceramic: Zirconia on Inconel - Chrome: Oxidized - Chromium - Chromium: Polished - Chromium: Unoxidized Chromium: Oxidized - Clay - Clay: Fired - Clay: Shale Clay: Tiles, light red - Clay: Tiles, red - Clay: Tiles, dark purple Material Emissivity Value Coal Cobalt Cobalt: Unoxidized - Columbium: Polished - Columbium: Oxidized - Columbium: Unoxidized - Concrete - Concrete: Rough Concrete: Tiles, natural - Concrete: Tiles, brown - Concrete: Tiles, black - Copper: Commercial, Scoured to a shine Copper: Calorized Copper: Calorized, oxidized Copper: Plate, heated long time, covered with thick oxide layer Copper: Plate, heated at 600oC Copper: Polished Copper: Roughly Polished Copper: Highly Polished Copper: Rolled Copper: Rough Copper: Oxidized - Copper: Unoxidized - Copper: Roughened Copper: Electroplated Copper: Cuprous Oxide - Copper: Black, oxidized Copper: Etched Copper: Matte Copper: Molten - Copper: Nickel Plated Cotton Cotton Cloth Dolomite Lime Dow Metal - Electrical terminal blocks Emery Corundum Enamel Fabrics Foods - Material Emissivity Value Formica Firebrick Glass: Smooth - Glass.

5 Convex D - Glass: Nonex - Glass: Plate - Glass: Fused quartz Glass: Fiber Glass Glass: Pyrex, lead and soda - Gold: Pure, highly polished - Gold: Polished - Gold: Unoxidized - Gold: Enamel Gold: Unpolished Gold: Plate, on Silver - Gold: Plate, on Nickel - Granite Granite: Polished Granite: Rough Granite: Natural Graphite - Gravel - Gypsum - Haynes Alloy - Haynes Alloy C: Oxidized - Haynes Alloy 25: Oxidized - Haynes Alloy X: Oxidized - Human Skin - Ice - Ice: Smooth - Ice: Rough - Inconel: Type X - Inconel: Type X, polished Inconel: Type X, oxidized Inconel: Type B - Inconel: Type B, polished Inconel: Polished Inconel: Oxidized - Inconel: Sandblasted - Inconel Sheet - Iron: Cast, oxidized - Material Emissivity Value Iron: Cast, Strongly oxidized Iron: Cast, Rusted - Iron: Cast, unoxidized Iron: Cast, polished Iron: Cast, Newly Turned Iron: Cast, Turned and Heated - Iron: Cast, Liquid unoxidized Iron: Cast, Wrought, dull - Iron: Cast, Wrought Iron, dull oxidized Iron: Wrought Iron: Wrought, polished/highly polished Iron: Wrought, dull Iron: Wrought, smooth Iron: Oxidized - Iron: Unoxidized - Iron: Plate, pickled, then rusted red Iron: Plate, completely rusted Iron.

6 Smooth oxidized electrolytic iron - Iron: Iron Oxide - Iron: Rough-ingot iron - Iron: Cast Plate, oxidized, smooth Iron: Cast Plate, oxidized, rough Iron: Molten Pure Iron - Iron: Molten Armco Iron - Iron: Liquid - Iron: Zinc Plating Iron: Red Rust Iron: Rusted - Iron: Polished - Iron: Dark Gray Surface Lacquer: Colored on Al - Lacquer: Colored Lacquer: Clear on Al - Lacquer: Clear on Cu - Lacquer: Clear on Tarnished Cu Lacquer: Black Shiny, sprayed on iron Lacquer: Black on White - Lacquer: Flat Black - Lacquer: A1 Lacquer, Varnish binder on rough plate Lacquer: Blue on Al Material Emissivity Value Lacquer: Red on Al - Lacquer: White Lacquer: White on Al - Lacquer: Yellow on Al - Lead: Pure: unoxidized - Lead: Polished - Lead: Oxidized - Lead: Oxidized, Gray Lead: Oxidized at 1100oF Lead: Rough - Leather - Limestone - Lime Mortar - Lime wash Linseed Oil: On Al Foil, uncoated - Linseed Oil: On Al Foil, +1, 2 coats oil - Linseed Oil: On Polished Iron.

7 001 film Linseed Oil: On Polished Iron, .002 film Linseed Oil: On Polished Iron, .004 film Linseed Oil: On Polished Iron, thick film Magnesia Magnesite Magnesium - Magnesium: Polished - Magnesium Oxide - Marble: Light Grey polished Marble: White Marble: Smooth White Marble: Polished Gray Masonry: Plastered Mercury: Unoxidized - Mercury - Mercury: Liquid Mica Molybdenum - Molybdenum: Polished - Molybdenum: Oxidized - Molybdenum: Oxidized at 1000oF - Molybdenum: Unoxidized - Molybdenum: Filament - Monel: Oxidized - Material Emissivity Value Monel: Ni-Cu - Monel: Ni-Cu, oxidized Monel: Ni-Cu, oxidized at 1110oF Mortar Mortar: Dried Mullite - Nichrome: Clean - Nichrome.

8 Oxidized - Nichrome Wire: Bright - Nickel: Polished - Nickel: Oxidized - Nickel: Unoxidized - Nickel: Electroplated Nickel: Electroplated, polished Nickel: Electroplated, not polished Nickel: Electrolytic - Nickel: Wire - Nickel: Plate, oxidized by heating at 600oC - Nickel: Chrome Nickel - Nickel: Nickel-Silver polished Nickel Oxide - Oak, Planed - Oil: Animal/vegetable - Oil: Mineral - Oil: thick Oil: thick Oil: thick Oil on Nickel: Film Oil on Nickel: Film Oil on Nickel: Film Oil on Nickel: Thick Oil Paints: All Colors - Oil Paints: Black Oil Paints: Black Gloss Oil Paints: Camouflage Green Oil Paints: Flat Black Oil Paints: Flat White Oil Paints: Gray-Green/Green/Red Oil Paints: Lamp Black Oil Paints: White Paint: Bronze Paint - Material Emissivity Value Paint: Bronze Paint, 2 coats gum varnish Paint: Bronze Paint, 3 coats gum varnish Paint: Bronze Paint, 2 coats cellulose binder Paint: Black Glass paint Paint: Green paint, Gray paint, Lamp Black - Paint: on metal - Paint: on plastic or wood - Paint: Black enamel Paint: Gold enamel - Paint: Clear silicone - Paint: Other Al paints, varying age and AI content - Paint: 10% Al Paint: 26% Al Paint: Al Paint after heating to 326oC Paint.

9 Dow XP-310 Paint: Blue Paint: Red Paint: White - Paint: Yellow - Palladium Plate ( on silver) - Paper - Paper offset Paper: black/burnish Paper: white Pine - Plaster - Plaster: Rough Plaster board Plastic - Platinum - Platinum: Black - Platinum: Black oxidized at 1100oF - Platinum: Cleaned polished/polished Plate - Platinum: Filament - Platinum: Unoxidized - Platinum: Wire - Polyester - Polyethylene Polypropylene Polytetrafluoroethylene (PTFE) Material Emissivity Value Porcelain: Glazed - Propellant: Liquid rocket engine PVC - Pyrex Quartz: Rough, fused Quartz: Glass, Thick Quartz: Glass, mm Thick - Quartz: Opaque - Radiator Paint: White, Cream, Bleach - Radiator Paint: Bronze Radiator Paint: Bronze, Lacquer coatings, " thick on Alum.

10 Alloys - Radiator Paint: Bronze, 3M Nextel 101-C10 .98 Radiator Paint: Bronze, Mikron High Temp Test Paint: Spirex SP102 Radiator Paint: Bronze, Clear Silicone Vehicle Coating " thick on mild steels Radiator Paint: Bronze, Clear Silicone Vehicle Coating " thick on stainless steels 316, 301 , 347 - Radiator Paint: Bronze, Clear Silicone Vehicle Coating " thick on Dow Metal Radiator Paint: Bronze, Clear Silicone Vehicle Coating " thick on AI Alloys, 24ST, 75ST - Radiator Paint: Bronze, Clear Silicone Vehicle Coating " thick, Aluminum Paint with silicone vehicle paint on Inconel Radiator Paint: Bronze, Clear Silicone Vehicle Coating " thick, Dull Black Varnish - Radiator Paint.