RayTek 3i User Manual
Page 61

Raynger 3i Series Operator’s Manual
B-3
Material
Emissivity
1.0µm
1.6µm
8-14µm
Iron
Oxidized
0.4-0.8
0.5-0.9
0.5-0.9
Unoxidized
0.35
0.1-0.3
n.r.
Rusted
n.r.
0.6-0.9
0.5-0.7
Molten
0.35
0.4-0.6
n.r.
Iron, Cast
Oxidized
0.7-0.9
0.7-0.9
0.6-0.95
Unoxidized
0.35
0.3
0.2
Molten
0.35
0.3-0.4
0.2-0.3
Iron, Wrought
Dull
0.9
0.9
0.9
Lead
Polished
0.35
0.05-0.2
n.r.
Rough
0.65
0.6
0.4
Oxidized
n.r.
0.3-0.7
0.2-0.6
Magnesium
0.3-0.8
0.05-0.3
n.r.
Mercury
n.r.
0.05-0.15
n.r.
Molybdenum
Oxidized
0.5-0.9
0.4-0.9
0.2-0.6
Unoxidized
0.25-0.35
0.1-0.35
0.1
Monel (Ni-Cu)
0.3
0.2-0.6
0.1-0.14
Nickel
Oxidized
0.8-0.9
0.4-0.7
0.2-0.5
Electrolytic
0.2-0.4
0.1-0.3
n.r.
Platinum
Black
n.r.
0.95
0.9
Silver
n.r.
0.02
n.r.
Steel
Cold-Rolled
0.8-0.9
0.8-0.9
0.7-0.9
Ground Sheet
n.r.
n.r.
0.4-0.6
Polished Sheet
0.35
0.25
0.1
Molten
0.35
0.25-0.4
n.r.
Oxidized
0.8-0.9
0.8-0.9
0.7-0.9
Stainless
0.35
0.2-0.9
0.1-0.8
Tin (Unoxidized)
0.25
0.1-0.3
n.r.
Titanium
Polished
0.5-0.75
0.3-0.5
n.r.
Oxidized
n.r.
0.6-0.8
0.5-0.6
Tungsten
n.r.
0.1-0.6
n.r.
Polished
0.35-0.4
0.1-0.3
n.r.
Zinc
Oxidized
0.6
0.15
0.1
Polished
0.5
0.05
n.r.
Material
Emissivity
Table B-1 (continued): Emissivity Values for Metals
n.r. = not recommended