Temper: Double temper at 400-750?F (200-400?C). Hold for 2 hours minimum each time.
tecnica
Austenitize 1950?F (1065?C). Quench to below 125?F (50?C). Double temper at 600?F (315?C) 2 hrs. minimum each temper. Cool to hand warm between
tecnica
Quench: Air or positive pressure quench (2 bar minimum) to below 125?F (50?C), or salt or interrupted oil quench to about 1000?F (540?C), then air
tecnica
Accademia della crusca
