Preheat the oven to 1,250 degrees Fahrenheit. Let the steel warm in the oven until it reaches the preheated temperature. Raise the temperature to 1,450 degrees and let it soak for at least 45 minutes.
Lower the temperature by no more than 50 degrees each hour until it reaches 900 degrees Fahrenheit. Turn off the furnace and allow the steel to cool to room temperature to anneal.
Place the steel in an oven set at 1,475 degrees Fahrenheit. Let it soak for at least an hour. Remove the steel and quench it in oil until it reaches room temperature and is cooled. This will produce a part with uniform hardness. Temper the steel by raising its temperature to 350 degrees and letting it cool in the air.
Things You Will Need
- Heat treat oven or forge
- Mineral oil
- The slower the steel is cooled in the stress relief and annealing processes, the better the end result.