Heat Treating Various Steels

D-2 Tool Steel -

Preheat thoroughly at 1400º/1500ºF and hold for 30 minutes.

Raise heat to 1850º and hold until uniformly heated.

Soak at temperature for 45 to 60 minutes.

Tempering:  Temper at 400ºF for one hour, two times.

440C Stainless -

Preheat thoroughly at 1400/1500ºF and hold for 30 minutes.

Raise heat to 1950º F and hold for one hour.

Air quench at room temperature.  Subzero freeze at 100º below 0.

Tempering:  Temper at 400ºF for one hour, two times

ATS-34 Stainless -

Preheat thoroughly at 1400º/1500ºF and hold for 30 minutes.

Raise heat to 1950º/1975ºF and hold for one hour.

Air quench at room temperature.  Subzero freeze at 100º below 0.

Tempering:  Temper at 950ºF for one hour, two times

0-1 Tool Steel -

Preheat thoroughly at 1200ºF.  Then heat to 1450ºF and hold until heated through.

Quench in 125ºF quenching oil..

Tempering:  Temper at 400ºF.

410 Stainless Steel -

Preheat thoroughly at 1400º/1500ºF and hold for 30 minutes.

Raise heat to 1850º and hold for 30 minutes.

Air quench at room temperature.

Tempering:  Temper at 500ºF for two hours, two times.