Fluke endurance series, Руководство пользователя

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Endurance® Series
Users Manual
90
Table 13: Typical Emissivity Values (Metals)
Emissivity at 1 µm for Metals Emissivity at 1 µm for Metals
Material Emissivity Material Emissivity
Aluminum Iron, cast
unoxidized 0.1-0.2 oxidized 0.7-0.9
oxidized 0.4 unoxidized 0.35
roughened 0.2-0.8 molten 0.35
polished 0.1-0.2 Magnesium 0.3-0.8
Brass Molybdenum
polished 0.1-0.3 oxidized 0.5-0.9
Burnished 0.6
Monel (Ni-Cu)
0.25-0.35
Chromium 0.4 Nickel
Copper unoxidized 0.3
polished 0.05
Oxidized 0.8-0.9
roughened 0.05-0.2 electrolytic 0.2-0.4
oxidized 0.2-0.8 Silver 0.04
Gold 0.3
Steel
Haynes
cold rolled 0.8-0.9
Alloy 0.5-0.9 polished sheet 0.35
Inconel
molten 0.35
oxidized 0.4-0.9 oxidized 0.8-0.9
sandblasted 0.3-0.4 stainless 0.35
electropolished 0.2-0.5 Tin (unoxidized) 0.25
Iron Titanium
oxidized 0.4-0.8 polished 0.5-0.75
unoxidized 0.35 Zinc
molten 0.35 oxidized 0.6
polished 0.5
Table 14: Typical Emissivity Values (Non-Metals)
Emissivity at 1 µm for Non-Metals
Material Emissivity
Asbestos 0.9
Ceramic 0.4
Concrete 0.65
Carbon
unoxidized 0.8-0.95
graphite 0.8-0.9