SS316 Clad Vessel vs SS316 Solid

No, but in some cases it can help.
Still plenty of opportunity for localized tensile stress.
What temp?
Chemical?
Temp cycling?
Pressure/thickness?

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P.E. Metallurgy, consulting work welcomed

If SCC does occur in the cladding, it will not lead to rapid failure of the vessel. Clad vs solid is chosen for this reason or for economic reasons. Remember that the stainless steel cladding can be roll clad, explosion clad, of weld overlayed.

Tensile stresses sufficient to qualify for chloride SCC are a given, especially in a vessel. When doing failure investigations involving SCC I usually don't need to look very far to find potential sources of tensile stress, either residual or applied.

Differential thermal expansion between the stainless clad and the steel substrate causes significant interface shear stress all by itself.

"Everyone is entitled to their own opinions, but they are not entitled to their own facts."

I agree with ironic metallurgist.

luis

1. No

2. No

Steve Jones
Corrosion Management Consultant


All answers are personal opinions only and are in no way connected with any employer.