titanium grade for seawater relief valve

[rmetzger]

I'm designing a small (>.625") diameter relief valve for use in a salt water environment and need it to retain as much mechanical strength and surface finish (it will be a sealing surface via o-rings) as possible. Recommendations for a specific titanium or other material (or coatings).

 

[boo1]

Inconel 725 will provide corrosion resistance, strength and minimize gall potential.

 

[EdStainless]

Don't mate Ti to Ti, galling will kill you.
Is this cold seawater? If so a CP or low alloy grade will work.

= = = = = = = = = = = = = = = = = = = =
Corrosion, every where, all the time.
Manage it or it will manage you.

http://www.trent-tube.com/contact/Tech_Assist.cfm

 

[rmetzger]

It'll be ti(?) to PVC or delrin so there will be no metel to metal contact.

thanks for the help folks