Heat Treatment

Normalizing: Heat to 1600/1650°F (871/899°C), hold for 10 min. and air cool.

Annealing: Heat to 1550/1600°F (843/871°C), pack in lime or wood ashses until cool.

Hardening: Heat to 1550/1600°F (843/871°C), and oil quench.

Tempering: After hardening, heat to a temperature 400°F to 500°F and air cool.