I had a Mavic SSC Rear wheel Hub that had cracked and later Chipped off ( an ear where the spokes are held).Tried bringing it to a Machinist but suggested, it wont last and would just corrode the interface of the hub.I know its quite old, (about 5 yrs old) but should it crack that way?

Could I get a rear hub? I believe it cant be fixed by welding.Does mavic have warranty on this?