Sulphide stress cracking

[Vic123]

Can sulphide stress be caused in 304 stainless steel in presence of H2S and chlorides if it is under compressive load?

 

[TVP]

Yes. Compressive load does not necessarily indicate the absence of tensile stresses. Geometry and residual stresses influence this.

 

[EdStainless]

In 304 it is probably choride stress cracking, but the S will make it more likely (lower stress, lower temp, and lower choride levels required).
Even when the nominal loading is compressive there will be tensile stresses some where. If you load a part heavily in compression and then release the load the residual stesses will be dominantly tensile.

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

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