Preheat: Heat to 1400°F (760°C) Equalize.
Austenitize: 1900-2000°F (1037-1093°C), hold time at temperature 30-60 minutes.
Quench: Parks 50 Oil or positive pressure (4 bar minimum) to below 125°F (50°C)
**If you have salt bath then quench to about 1000°F (540°C), then air cool to below 125°F (50°C). Salt bath treatment, if practical, will ensure the maximum attainable toughness for a given hardening treatment.
Temper: Twice at 400-1200°F (204-650°C) 2 hours minimum each time.
Aim hardness: HRC 55-62
1 comment
I purchased several beautiful blades from Jantz knife supply in the past.
My question is we lost or home and everything in it (along with all my tools and half a dozen Damascus blades that I hadn’t put handles on). How can I temper them wit a welding torch? Hate to toss them out.
Thanks for your time.