Fluke Endurance Series User Manual page 143

Metals
Emissivity
Material 1 µm
Silver
Steel
Cold-Rolled 0.8-0.9
Ground Sheet
Polished Sheet 0.35
Molten 0.35
Oxidized 0.8-0.9
Stainless 0.35
Tin (Unoxidized) 0.25
Titanium
Polished 0.5-0.75
Oxidized
Tungsten
Polished 0.35-0.4
Zinc
Oxidized 0.6
Polished 0.5
1.6 µm 2.4 µm
0.02 0.02
0.8-0.9
0.6-0.7
0.25 0.2
0.25-0.4 0.25-0.4
0.8-0.9 0.8-0.9
0.2-0.9 0.2-0.9
0.1-0.3 0.1-0.3
0.3-0.5 0.2-0.5
0.6-0.8 0.6-0.8
0.1-0.6
0.1-0.3 0.1-0.3
0.15 0.15
0.05 0.05
Appendix 15
Typical Emissivity Values
143