May not be as bad as it appears.. but warrants removing the plate and inspecting.. I think that what you see as a crack is an "interstitial inclusion" or lamination.. These form when rolling the red hot stainless (all metals, pretty much) into thin plates at the mill. basically a very thin layer of "not stainless" that gets put there from slag or dirt or bad mixing of the metal from the pour (when the molten stainless was poured into the mold prior to rolling). It probably does not go very far in the plate, and as long as it is in plane with the wide dimension (as it appears to be), it really does not weaken the plate in the direction of the shroud pull..
That having been said, it would be wise to pull the strap and polish it and carefully inspect to make sure that the inclusion has not caused a crack to propagate in the thin dimension, which
would weaken the plate..The other inclusion to the right side is more concerning and the rust stain on the link pin should really be investigated as well. Or ya could buy a little 316 stainless and have a machine shop make ya a new one.. Not going to be a lot of dollars to duplicate a flat strap with a few holes in it.
like this;
http://www.onlinemetalsupply.com/p-15986-304-stainless-steel-flat-bar-375-x-2-x-48.aspx
or in 316 stainless.. These guys are out right now.
