Stellite on ball Valve engineering Eng Tips
The real problem of applying stellite on the ball is that it gests exfoliated after a while. For this type of application on ball valves Tungsten carbide coating, applied with HVOF method, is technically better. But if the service is really highly corrosive, then they should change the ball material to SDSS or Inconel.
Galling Stellite 6 on Stellite 6
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