RayTek MP150 - Page 58

Appendix
58 Rev. E3 07/2013 MP150
M
ETALS
Material
Emissivity
1 µm
1.6 µm
3.9 µm
5 µm
Aluminum
Unoxidized
0.1-0.2
0.02-0.2
0.02-0.2
0.02-0.2
• Oxidized
0.4
0.4
0.2-0.4
0.2-0.4
Alloy A3003, Oxidized
0.4
0.4
0.4
Roughened
0.2-0.8
0.2-0.6
0.1-0.4
0.1-0.4
Polished
0.1-0.2
0.02-0.1
0.02-0.1
0.02-0.1
Brass
Polished
0.35
0.01-0.05
0.01-0.05
0.01-0.05
Burnished
0.65
0.3
0.3
Oxidized
0.6
0.5
0.5
Chromium
0.4
0.4
0.03-0.3
0.03-0.3
Copper
Polished
0.05
0.03
0.03
0.03
Roughened
0.05-0.2
0.05-0.2
0.05-0.15
0.05-0.15
Oxidized
0.2-0.8
0.2-0.9
0.5-0.8
0.5-0.8
Gold
0.3
0.01-0.1
0.01-0.1
0.01-0.1
Haynes
Alloy
0.5-0.9
0.6-0.9
0.3-0.8
0.3-0.8
Inconel
Oxidized
0.4-0.9
0.6-0.9
0.6-0.9
0.6-0.9
Sandblasted
0.3-0.4
0.3-0.6
0.3-0.6
0.3-0.6
Electropolished
0.2-0.5
0.25
0.15
0.15
Iron
Oxidized
0.7-0.9
0.5-0.8
0.6-0.9
0.6-0.9
Unoxidized
0.35
0.1-0.3
0.05-0.25
0.05-0.25
Rusted
0.6-0.9
0.5-0.8
0.5-0.8
Molten
0.35
0.4-0.6
—
—
Iron, Cast
Oxidized
0.9
0.7-0.9
0.65-0.95
0.65-0.95
Unoxidized
0.35
0.3
0.25
0.25
Molten
0.35
0.3-0.4
0.2-0.3
0.2-0.3
Iron, Wrought
Dull
0.9
0.9
0.9
Tab. 6: Typical Emissivity Values