TABLE OF CONTENTS The following tables are presented for use as a guide when making infrared temperature measurements with the OMEGASCOPE or other infrared pyrometers. The total emissivity ( ?) for metals, non-metals and common building materials are given.
Since the emissivity of a material will vary as a function of temperature and surface finish, the values in these tables should be used only as a guide for relative or delta measurements. The exact emissivity of a material should be determined when absolute measurements are required.
| Material | Temp F ( C) | ?-Emissivity | Material | Temp F ( C) | ?-Emissivity | Material | Temp F ( C) | ?-Emissivity |
|---|---|---|---|---|---|---|---|---|
| Alloys | Polished | 100 (38) | .03 | Monel, Ni-Cu Oxid. at | 1110 F1110 (599) | .46 | ||
| 20-Ni, 24-CR, 55-FE, Oxid. | 392 (200) | .90 | Highly Polished | 100 (38) | .02 | Nickel | ||
| 20-Ni, 24-CR, 55-FE, Oxid. | 932 (500) | .97 | Rolled | 100 (38) | .64 | Polished | 100 (38) | .05 |
| 60-Ni , 12-CR, 28-FE, Oxid. | 518 (270) | .89 | Rough | 100 (38) | .74 | Oxidized | 100 500 (38 260) | .31 .46 |
| 60-Ni,12-CR,28-FE,Oxid. | 1040 (560) | .82 | Molten | 1000 (538) | .15 | Unoxidized | 77 (25) | .05 |
| 80-Ni, 20-CR, Oxidized | 212 (100) | .87 | Molten | 1970 (1077) | .16 | Unoxidized | 212 (100) | .06 |
| 80-Ni, 20-CR, Oxidized | 1112 (600) | .87 | Molten | 2230 (1221) | .13 | Unoxidized | 932 (500) | .12 |
| 80-Ni, 20-CR, Oxidized | 2372 (1300) | .89 | Nickel Plated | 100 500 (38 260) | .37 | Unoxidized | 1832 (1000) | .19 |
| Aluminium | Dow Metal | 0.4 600 ( ?18 316) | .15 | Electrolytic | 100 (38) | .04 | ||
| Unoxidized | 77 (25) | .02 | Gold | Electrolytic | 500 (260) | .06 | ||
| Unoxidized | 212 (100) | .03 |
