Heat Treatment H

After forging or machining:

  1. Heat to 1,500-1,600°F.
  2. Quench.
  3. Reheat to 600-1,200°F. and cool slowly.

Heat Treatment K

After forging or machining:

  1. Heat to 1,500-1,550°F.
  2. Quench.
  3. Reheat to 1,300-1,400°F.
  4. Quench.
  5. Reheat to 600-1,200°F. and cool slowly.

Heat Treatment L

After forging or machining:

  1. Carbonize between 1,600°F. and 1,750°F. (1,650-1,700°F. desired).
  2. Cool slowly in the carbonizing mixture.
  3. Reheat to 1,400-1,500°F.
  4. Quench.
  5. Reheat to 1,300-1,400°F.
  6. Quench.
  7. Reheat to 250-500°F. and cool slowly.

Heat Treatment M