IPU 40108
Page 28 of 29
6 Emissivity Lookup Table
Below is a list of approximate emissivity values for a range of materials for making more accurate
temperature measurements.
NOTE: Emissivity values often vary with temperature and wavelength so this table is included as a
guide only.
1.000000 = Black body
0.980000 = Carbon filed surface
0.980000 = Frost crystals
0.980000 = Skin human
0.970000 = Slate
0.960000 = Water distilled
0.960000 = Ice smooth
0.950000 = Soil saturated with water
0.950000 = Carbon candle soot
0.940000 = Glass polished plate
0.940000 = Paint, oil
0.930000 = Brick red
0.930000 = Paper white bond
0.920000 = Concrete
0.920000 = Soil dry
0.910000 = Plaster rough coat
0.900000 = Wood planed oak
0.900000 = Glazed earthenware
0.890000 = Snow, granular
0.880000 = Glazed Silica
0.870000 = Cuprous Oxide at 38°C
0.860000 = Emery Corundum
0.850000 = Snow
0.850000 = Stainless oxidized at 800°C
0.840000 = Oxidised Iron at 500°C
0.830000 = Cuprous Oxide at 260°C
0.820000 = Snow, fine particles
0.810000 = Brass, unoxidised
0.800000 = Glass, convex D
0.790000 = Steel oxidised
0.780000 = Copper heavily oxidised
0.770000 = Cotton cloth
0.760000 = Sand
0.750000 = Unglazed silica
0.740000 = Oxidised iron at 100°C
0.730000 = Coating No. C20A
0.720000 = Basalt
0.710000 = Graphitised carbon at 500°C
0.700000 = Red Rust
0.690000 = Iron sheet heavily rusted
0.670000 = Water
0.660000 = Black Loam
0.650000 = White cement
0.640000 = Iron cast oxidised
0.630000 = Lead oxidised at 1100°F
0.620000 = Zirconia on inconel
0.610000 = Cu-Zn, brass oxidised
0.580000 = Inconel sheet at 760°C
0.560000 = Smooth white marble
0.550000 = Al anodised chromic acid
0.210000 = Iron cast polished
0.200000 = Brass rubbed 80 grit emery
0.160000 = Stainless steel 18-8 buffed
0.090000 = Aluminium as received
0.070000 = Steel polished
0.050000 = Aluminium polished sheet
0.050000 = Copper polished
0.030000 = Brass highly polished
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