Dwyer TIC Manual de usuario Pagina 77

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Appendix
Emissivity table (continue)
Material
Temperature°C
Emissivity
approximation
Stainless steel
18-8
25
0.16
304(8Cr,18Ni)
215490
0.440.36
310(25Cr,20Ni)
215520
0.900.97
Tin
Commercial tin plate
100
0.07
Strong oxidization
0200
0.60
Zinc
Oxidizing at 400°C
400
0.01
galvanized shining
iron plate
28
0.23
Ash zinc oxide
25
0.28
Non-metal materials
Brick
1100
0.75
Fire brick
1100
0.75
Graphite (lamp black)
96225
0.95
Porcelain enamel
(white)
18
0.90
Asphaltum
0200
0.85
Glass (surface)
23
0.94
Heat-resistance glass
200540
0.850.95
Calcimine
20
0.90
Oak
20
0.90
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