Affect of QPQ on 625 Overlay on F22

[VictorMeldrew]

One of our customers has quesioned the affect on the corrosion resistance and the ISO15156 compliance of Nitrocarburizing 625 weld overlay on F22. Anyone have any thoughts?

 

[swall]

A little more information about the configuration of the components involved would help.

 

[VictorMeldrew]

It's basicaly a cylindrical part, with a variety of IDs, inlayed over a section of the bore where seals are in contact. The whole thing is nitrocarburized. The bore is exposed to oil well production fluids.