B
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23
Operating manual – Infrared camera
Material
Temperature
(°C)
Emissivity
approximation
Iron
Polished cast iron
200
0,21
Processed cast iron
20
0,44
Polished tempered
iron
40 ~ 250
0,28
Polished steel ingot
770 ~ 1040
0,52 ~ 0,56
Raw welded steel
945 ~ 1100
0,52 ~ 0,61
Surface ferric oxide
20
0,69
Completely rusty
surface
22
0,66
Rolled iron plate
100
0,74
Oxidized steel
198 ~ 600
0,64 ~ 0,78
Cast iron
(Oxidizing at 600°C)
198 ~ 600
0,79
Steel
(Oxidizing at 600°C )
125 ~ 520
0,78 ~ 0,82
Electrolytic ferric
oxide
500 ~ 1200
0,85 ~ 0,89
Iron plate
925 ~ 1120
0,87 ~ 0,95
Cast iron,
heavy ferric oxide
25
0,80
Tempered iron,
ferric oxide
40 ~ 250
0,95
Melting surface
22
0,94
Melting cast iron
1300 ~ 1400
0,29
Melting mild steel
1600 ~ 1800
0,28
Liquid steel
1500 ~ 1650
0,42 ~ 0,53
Pure lead
1515 ~ 1680
0,42 ~ 0,45
Silver
Polished Silver
100
0,05
Material
Temperature
(°C)
Emissivity
approximation
Nickel
Nickel-chrome
(heat-resistance)
50 ~ 1000
0,65 ~ 0,79
Nickel-chrome alloy
50 ~ 1040
0,64 ~ 0,76
Nickel-chrome alloy
(heat resistance)
50 ~ 500
0,95 ~ 0,98
Nickel-silver alloy
100
0,14
Lead
Pure lead
(Non-oxidization)
125 ~ 225
0,06 ~ 0,08
Stainless steel
18 - 8
25
0,16
304 (8Cr, 18Ni)
215 ~ 490
0,44 ~ 0,36
310 (25Cr, 20Ni)
215 ~ 520
0,90 ~ 0,97
Tin
Commercial tin plate
100
0,07
Strong oxidization
0 ~ 200
0,60
Zinc
Oxidizing at 400°C
400
0,01
galvanized shining
iron plate
28
0,23
Ash zinc oxide
25
0,28
Magnesium
Magnesia
275 ~ 825
0,55 ~ 0,20
Hg
0 ~ 100
0,09 ~ 0,12
Nickel
Electroplate polishing
25
0,05
Electroplate
20
0,01
Nickel wire
185 ~ 1010
0,09 ~ 0,19
Nickel alloy (oxide)
198 ~ 600
0,37 ~ 0,48
11. EMISSIVITY TABLE