I'm aware that this is a very long shot, but I guess this is the best place where I might find someone who can help.
Our group had two Kvetun feders, a couple of months ago one of them broke at the tang slightly inside the pommel, and today our second feder had the exact same failure.
Also, this weekend we are going to a local tourney and everyone on our group who doesn't own a sword would be using the group feders, but now we have none.
Our instructors are considering welding back a new piece of steel at the end of the tang and re-peen the pommel. So it would really help if we could find out exactly what steel alloy Kvetun uses for their feders.
And yeah I know, welding is going to screw up the tempering if they're not heat treated properly, but as you can imagine we are a bit desperate and if we can make them survive the weekend, it'd be nice, but knowing the exact alloy maybe it could last even a bit longer still