Appendix
Pi20
Rev. B 09/2011
51
M
ETALS
Emissivity
Material
8 – 14 µm
Aluminum
Unoxidized
0.02-0.1
Oxidized
0.2-0.4
Alloy A3003, Oxidized
0.3
Roughened
0.1-0.3
Polished
0.02-0.1
Brass
Polished
0.01-0.05
Burnished
0.3
Oxidized
0.5
Chromium
0.02-0.2
Copper
Polished
0.03
Roughened
0.05-0.1
Oxidized
0.4-0.8
Gold
0.01-0.1
Haynes
Alloy
0.3-0.8
Inconel
Oxidized
0.7-0.95
Sandblasted
0.3-0.6
Electropolished
0.15
Iron
Oxidized
0.5-0.9
Unoxidized
0.05-0.2
Rusted
0.5-0.7
Molten
Iron, Cast
Oxidized
0.6-0.95
Unoxidized
0.2
Molten
0.2-0.3
Iron, Wrought
Dull
0.9
Lead
Polished
0.05-0.1
Rough
0.4
Oxidized
0.2-0.6
Magnesium
0.02-0.1
Mercury
0.05-0.15
Molybdenum
Oxidized
0.2-0.6
Unoxidized
0.1
Monel (Ni-Cu)
0.1-0.14
Nickel
