9
d). Pull the trigger
to
store the setting value and exit set mode.
The following table gives typical emissivity values for
common materials
Emissivity VALUES
Typical Emissivity Values; Metals
SURFACE EMISSIVITY
Zinc (oxidized)
0.1*
Galvanized iron
0.3
Tin-plated steel
0.1*
Gold (polished)
0.1*
Silver (polished)
0.1*
Chromium (polished)
0.1*
Iron and Steel
Cast iron (polished)
0.2
Cast iron (turned at 100
℃
)
0.45
Cast iron (turned at 1000
℃
)
0.6 to 0.7
Steel (ground sheet)
0.6
Mild steel
0.3 to 0.5
Steel plate (oxidized)
0.9
Iron plate (rusted)
0.7 to 0.85
Cast iron (rough) rusted
0.95
Rough ingot iron
0.9
EMISSIVITY VALUES
Typical Emissivity Values; Metals
SURFACE EMISSIVITY
Molten cast iron
0.3
Molten mild steel
0.3 to 0.4
Stainless steel (polished)
0.1
Stainless steel (various)
0.2 to 0.6
Aluminum
Polished aluminum
0.1*
Aluminum (heavily oxidized)
0.25
