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Detroit Flame Hardening - Dies & Molds

Stamping, blanking, forming, shearing, cast gray iron, ductile iron, carbon steels and alloy steels.

The initial cost of a die is very high, and wear on the die is usually confined to small areas.

Even the most intricate shapes can be flame hardened

  • Flame hardening of dies and molds reduces wear and increases die life.
  • Large automotive dies provide ideal examples of the proper application of flame hardening and can be handled as readily as small ones.
  • Smaller dies may require hardening of "shut-off" or "runner" areas only. Instead of buying new dies, flame hardening allows the reworking of old dies by making shape modifications and re-flame hardening
  • .
  • Dies can be finished and tried out before they are finally flame hardened for production runs.
  • For molds, the flame hardened areas are usually adjacent to the die working areas, so there is a minimum of heat exposure, which eliminates distortion.


  • Plastic mold dies
  • Metal stamping, blanking, forming, and shearing dies

Suitable materials:

  • Alloy steels
  • Plain carbon steels
  • Ductile iron
  • Cast iron
  • Stainless steel