HVOF Corrosion

Hayden Corp

This test was performed by an independent laboratory.

The sample coatings were applied to bars of 4140 steel as follows:



  • Nitrided to approximately .007 - .010-inch depth
  • Chrome plated, .002- .003 - inch thick
  • Plasma spray, tungsten carbide/cobalt powder
  • JK 558 TRIBALO™® T-800
  • JK 591 NISTELLE™® C
  • JK 112, tungsten carbide/cobalt powder

The lower third of the surfaces were immersed in acid concentrates at elevated temperatures. Corrosion was measured by weight loss. The acids and conditions were as follows:


Click Image to Enlarge

HVOF corrosion

Data courtesy TAFA, Inc., Concord, NH.


The Federal Communications Commission specifies that most devices must remain passively susceptible to impingent interference.* Minimize risk and reduce compromising emissions with conductive surfaces from Hayden Corporation.


*See FCC 79-555/14686


Learn more about HVOF coating.