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Boriding / Boronizing for Extreme Wear Resistance Heat Treating

Boronizing, also known as boriding, is a case hardening diffusion process where boron atoms are diffused into the surface of a metal component to form hard metal-boride compound layers under the surface of a component. Boronized parts have 2-5 times longer wear life compared to other heat treatments. 

Boronized metal parts are extremely wear resistant and will often last two to five times longer than components treated with conventional heat treatments.

Properties of Boronizing
  • Extremely high wear resistance (erosion or abrasive wear)
  • Galling resistance
  • High surface hardness (1200-1800 HV for ferrous materials, 2000-2800 HV for nickel-based alloys)
  • Boride layer depths can range from .0005" to .015" deep depending on base material and processing parameters selected
  • High temperature resistance with up to 1200F service temperature possible with no adverse effects or degradation of the boride layer
  • Increased corrosion resistance to acids
  • Reduced co-efficient of friction
  • Wide range of materials possible for treatment
  • Able to be combined with other heat treatment processes such as carburizing, hardening, induction hardening, austempering to develop deeper case depths and improved core properties below boride layer
  • Able to be selectively applied
Materials Suitable for Boronizing
  • Plain carbon steels
  • Alloy steels
  • Tool steels
  • Cast Iron, Ductile Iron
  • Nickel-based superalloys (Inconel, Hastelloy)
  • Cobalt alloys
  • Stellite
Applications for Boronizing
  • Agricultural harvesting components exposed to high wear
  • Grain handling equipment
  • Blades and cutters
  • Ground engaging tools
  • Pump housings, cases and impellers
  • Ball Valves, Gate Valves, Valve Seats, Valve Housings
  • Extrusion Dies
  • Plastic injection molding/compounding equipment such as screws, barrels, dies and augers
  • Burner nozzles
  • Rolls
  • Downhole drilling tools for oil and gas industry
  • Wire drawing dies
  • Pipe fittings
  • Grinding wheels
  • Glass molding tools / glass cutting tools
  • Ceramic molding and handling tools
  • Brick making molds, dies and tools
  • Plungers
  • Core pins / Ejection pins
  • Turbine components
  • Wear Rings
  • Pipes and Elbows
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