Preheat Temperature Calculator
Calculate minimum preheat temperature for steel welding.
AWS D1.1 Preheat Guide
| Thickness | Cat I | Cat II | Cat III |
|---|---|---|---|
| <19mm | None | 10°C | 65°C |
| 19-38mm | None | 65°C | 107°C |
| 38-63mm | 10°C | 107°C | 150°C |
| >63mm | 65°C | 150°C | 205°C |
Calculate minimum preheat temperature for steel welding.
| Thickness | Cat I | Cat II | Cat III |
|---|---|---|---|
| <19mm | None | 10°C | 65°C |
| 19-38mm | None | 65°C | 107°C |
| 38-63mm | 10°C | 107°C | 150°C |
| >63mm | 65°C | 150°C | 205°C |