Thanks for that answer Jason, actually forgot that I asked it so no sweat Grendel :)
The reason I asked then is that we use a lot of stainless in the line of work we do but we use Martensitic stainless steels mostly 420 series, machined then hardened to about 48 Rc, the problem lately is that we've had a few failures and we discovered it is due to intergranular corrosion.

Have any of you guys, Jason, Gredel, experienced this with the products you guys design being under the ocean and exposed to the salt.

Cheers