| Symbol | ɛ |
|---|---|
| Unit | - |
| Attribute-ID | emission ratio radiation |
| Numeric ID | 2444 |
| Value Type | PMDouble |
| Material | Condition | Emission ratio ɛ |
| Grey cast iron GG | Casting scale | 0.60 ... 0.80 |
| Lathed or hobbed | 0.35 ... 0.45 | |
| Steel | Rolling skin | 0.80 ... 0.90 |
| Lathed or hobbed | ≈ 0.15 | |
| Hobbed and oil covered | ≈ 0.25 | |
| Sandblasted | ≈ 0.35 | |
| Sandblasted and oil covered | 0.50 ... 0.60 | |
| Aluminium | Oxide skin | ≈ 0.15 |
| Lathed or hobbed | 0.05 ... 0.10 | |
| All materials painted | With and without oil or dust covered | 0.90 ... 0.95 |