It'll be ferritic(magnetic), couldn't hold an edge otherwise. Don't know where the myth started that ALL stainless was non-magnetic, think it was some junkyard guy separating nickle- and chrome-plated steel from all-stainless car trim with his little magnet-ona-keychain. There ARE more exotic non-iron alloys that will hold an edge and are non-magnetic, you won't find most knifemakers using them, though. Don't commonly fall into the "stainless steel" category, either.
Stan