RayTek MP150 - Page 59

Appendix
MP150 Rev. E3 07/2013 59
M
ETALS
Material
Emissivity
1 µm
1.6 µm
3.9 µm
5 µm
Lead
Polished
0.05-0.2
0.05-0.2
0.05-0.2
• Rough
0.6
0.4
0.4
Oxidized
0.3-0.7
0.2-0.7
0.2-0.7
Magnesium
0.3-0.8
0.05-0.3
0.03-0.15
0.03-0.15
Mercury
0.05-0.15
0.05-0.15
0.05-0.15
Molybdenum
Oxidized
0.5-0.9
0.4-0.9
0.3-0.7
0.3-0.7
Unoxidized
0.25-0.35
0.1-0.35
0.1-0.15
0.1-0.15
Monel (Ni-Cu)
0.3
0.2-0.6
0.1-0.5
0.1-0.5
Nickel
Oxidized
0.8-0.9
0.4-0.7
0.3-0.6
0.3-0.6
Electrolytic
0.2-0.4
0.1-0.3
0.1-0.15
0.1-0.15
Platinum
Black
0.95
0.9
0.9
Silver
0.04
0.02
0.02
0.02
Steel
Cold-Rolled
0.8-0.9
0.8-0.9
0.8-0.9
0.8-0.9
Ground Sheet
0.5-0.7
0.5-0.7
Polished Sheet
0.35
0.25
0.1
0.1
Molten
0.35
0.25-0.4
0.1-0.2
0.1-0.2
Oxidized
0.8-0.9
0.8-0.9
0.7-0.9
0.7-0.9
Stainless
0.35
0.2-0.9
0.15-0.8
0.15-0.8
Tin (Unoxidized)
0.25
0.1-0.3
0.05
0.05
Titanium
Polished
0.5-0.75
0.3-0.5
0.1-0.3
0.1-0.3
Oxidized
0.6-0.8
0.5-0.7
0.5-0.7
Tungsten
0.05-0.5
0.05-0.5
Polished
0.1-0.3
0.05-0.25
0.05-0.25
Zinc
Oxidized
0.6
0.15
0.1
0.1
Polished
0.5
0.05
0.03
0.03
Tab. 7: Typical Emissivity Values