| steel temperature ranges (degrees F) | |||
| temperature range | color | proocess with similar range | process range |
| 950-1350 | dark red | critical transformation for 0.083% carbon steel | 1,333 |
| 1400-1600 | bright red | carbon steel hardening | 1350-1550 |
| 1700-1900 | orange | alloy steel hardening | 1450-1950 |
| 2000-2300 | yellow | -- | -- |
| 2400-2800 | white | welding, high-speed steel hardening | 2250-2400 |
Welding Glossary
steel colors, corresponding temperatures and processes
