Satir E8-N User Manual page 78

Appendix
Emissivity table (continue)
Material
Iron
Polished cast iron
Processed cast iron
Polished tempered
iron
Polished steel ingot
Raw welded steel
Surface ferric oxide
Completely rusty
surface
Rolled iron plate
Oxidized steel
Cast iron (Oxidizing at
600°C)
Steel (Oxidizing at
600°C )
Electrolytic ferric
oxide
Iron plate
Cast iron, heavy ferric
oxide
Tempered iron, ferric
oxide
Melting surface
Melting cast iron
Melting mild steel
Liquid steel
Pure liquid iron
78
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Temperature（°C）
200
20
40～250
770～1040
945～1100
20
22
100
198～600
198～600
125～520
500～1200
925～1120
25
40～250
22
1300～1400
1600～1800
1500～1650
1515～1680
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Emissivity
approximation
0.21
0.44
0.28
0.52～0.56
0.52～0.61
0.69
0.66
0.74
0.64～0.78
0.79
0.78～0.82
0.85～0.89
0.87～0.95
0.80
0.95
0.94
0.29
0.28
0.42～0.53
0.42～0.45
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