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Surface Treatment of Titanium Without Fatigue Penalty

We are thinking of making some titanium studs from 6Al-4V, and would like to apply some form of surface treatment to prevent galling. These studs are very highly stressed, so ideally the surface treatment shouldn't cause a loss in fatigue strength. What treatments are suitable for this?

Wayne Ward
- Derbyshire, England
2002

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First of two simultaneous responses --

Something lubrious and softer than your substrate, I guess. Could it be mechanical plating of cadmium? Worth investigating if possible and affordable. Beware of hydrogen pick up in electroplating procedures.

Guillermo Marrufo
Monterrey, NL, Mexico
2002

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Second of two simultaneous responses --

Sound like a titanium anodize process per AMS 2488 Type II. It is compressively stressed and lubrous. In the states only a handful of shops do it.

Jon Quirt
- Fridley, Minnesota
2002