Re: tungsten carbide (nickel based) coating


Posted by Gordon England on February 13, 2003 at 11:11:45:

In Reply to: tungsten carbide (nickel based) coating posted by Ken Stone on February 06, 2003 at 20:31:22:

: Does anyone out there know a suitable coefficient of friction (static or dynamic) for a valve seat ring coated with a nickel based tungston carbide rubbing against a cast nickel-copper wedge? (This is a wedge gate valve in steam or seawater)

: I'd appreciate your input.

: Ken

Hi Ken

I doubt whether you will get any specific values for this combination without testing it for yourself. I would suspect the coefficient of friction will be not be particularly low. Are you experiencing problems with this combination of materials?

Regards Gordon


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