Forge Welding Temperature Calculator
Determine the safe forge welding temperature, flux type, and heat color when welding two different steel types together.
Inputs
°F
Results
Welding Temperature
2,200 °F
Heat Color
Light Yellow / Lemon
Flux Recommendation
Borax (anhydrous) — apply generously at bright orange
Welding Temperature1,204 °C
DifficultyModerate — watch for carbon migration
Est. Heat-Up Time14 min
How to Use This Calculator
- Select the steel types for both pieces being welded — the lower welding temperature of the pair determines the safe welding window.
- Enter ambient temperature (°F) to adjust for cold shop conditions which affect heat retention.
- Review the Target Welding Temperature (°F) — this is the lower of the two steels plus a small margin.
- Use a flux (borax) to prevent oxidation and watch for the steel to reach a wet, glassy appearance before striking.
- Never exceed the Maximum Safe Temperature shown, which risks burning or melting the high-carbon steel.
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