Technical information and articles for thermographic measurements
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Emissivity table
The emissivity of a material is the relative ability of its surface to emit energy by radiation. It is necessary to estimate correct emissivity of surface while measuring temperature.
| Material | condition | Temperature, C | Emissivity |
| Rubber | hard | 23 | 0,94 |
| Rubber, Soft, Gray | 24 | 0,86 | |
| Paints | Black, CuO | 24 | 0,96 |
| Red, Fe2O3 | 24 | 0,91 | |
| Oil, Black | 93 | 0,92 | |
| Al | Unoxidized | 25 | 0,02 |
| Unoxidized | 500 | 0,06 | |
| Oxidized | 199 | 0,11 | |
| Oxidized | 599 | 0,19 |
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