Page 208 - Intro Predictive Maintenance

Thermography 199

Nonmetals °F °C Emissivity
Greens No. 5210-2C 200–750 93–399 .89–.82
Coating No. C20A 200–750 93–399 .73–.67
Porcelain 72 22 0.92
White Al2O3 200 93 0.9
Zirconia on Inconel 800–2000 427–1093 .62–.45
Clay 68 (20) 0.39 0.39
Fired at 158 70 0.91
Shale at 68 20 0.69
Tiles, Light Red 2500–5000 1371–2760 .32–.34
Tiles, Red 2500–5000 1371–2760 .40–.51
Dark Purple 2500–5000 1371–2760 0.78
Concrete Rough 32–2000 0–1093 0.94
Tiles, Natural 2500–5000 1371–2760 .63–.62
Tiles, Brown 2500–5000 1371–2760 .87–.83
Tiles, Black 2500–5000 1371–2760 .94–.91
Cotton Cloth 68 (20) 0.77
Dolomite Lime 68 (20) 0.41
Emery Corundum 176 (80) 0.86
Glass Convex D 212 100 0.8
Convex D 600 316 0.8
Convex D 932 500 0.76
Nonex 212 100 0.82
Nonex 600 316 0.82
Nonex 932 500 0.78
Smooth 32–200 0–93 .92–.94
Granite 70 21 0.45
Gravel 100 38 0.28
Gypsum 68 20 .80–.90
Ice, Smooth 32 0 0.97
Ice, Rough 32 0 0.98
Lacquer Black 200 93 0.96
Blue, on Al Foil 100 38 0.78
Clear, on Al Foil (2 coats) 200 93 .08 (.09)
Clear, on Bright Cu 200 93 0.66
Clear, on Tarnished Cu 200 93 0.64
Red, on Al Foil (2 coats) 100 38 .61 (.74)
White 200 93 0.95
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 0.95
Marble, White 100 38 0.95
Smooth, White 100 38 0.56
Polished Gray 100 38 0.75
Mica 100 38 0.75