Vaughan 240022 - Page 9

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Surface Material Emissivity Surface
Material
Emissivity Surface
Material
Emissivity
Black lacquer on iron 0.875 Iron, rough ingot 0.87 - 0.95 Rubber, glossy 0.94
Black Silicone Paint 0.93 Lead un-oxidized 0.057 -
0.075
Rubber, natural
hard
0.91
Black Epoxy Paint 0.89 Lead Oxidized 0.43 Salt 0.34
Black Enamel Paint 0.8 Limestone 0.90 - 0.93 Sand 0.76
Brass Dull Plate 0.22 Magnesite 0.38 Sandstone 0.59
Brass Polished 0.03 Magnesium
Polished
0.07 - 0.13 Silica 0.79
Brick, red rough 0.93 Marble White 0.95 Silicon Carbide 0.83 - 0.96
Brick, fireclay 0.75 Masonry Plas-
tered
0.93 Silver Polished 0.02 - 0.03
Carbon, not oxidized 0.81 Mercury liquid 0.1 Soil 0.90 - 0.95
Cast Iron 0.44 Mild Steel 0.20 - 0.32 Steel Oxidized 0.79
Cement 0.54 Mortar 0.87 Steel Polished 0.07
Clay 0.91 Nickel, electro-
plated
0.03 Stainless
Steel(SS)
0.85
Coal 0.8 Nickel, polished 0.072 SS, polished 0.075
Concrete 0.85 Nickel, oxidized 0.59 - 0.86 Steel Galvanized
old
0.88
Concrete, rough 0.94 Oak, planed 0.89 Steel Galvanized
New
0.23
Concrete tiles 0.63 Oil paints, all
colors
0.92 - 0.96 Tile 0.97
Cotton cloth 0.77 Paper offset 0.55 Tin un-oxidized 0.04
Copper Polished 0.023 -
0.052
Plaster 0.98 Water 0.95 - 0.963
Copper Nickel Alloy 0.059 Pine 0.84 Wood Beech,
planned
0.935
Glass smooth 0.92 - 0.94 Plaster board 0.91 Wood Oak,
planned
0.885
Glass, Pyrex 0.85 - 0.95 Porcelain, glazed 0.92 Wood, Pine 0.95