It'll all wear.
I am doing something similar, rebuilding impact crusher hammers for a guy every week. That's just the way it is. They wear down every week. I build them up with Forney 600 (a wear resistent build up rod) then hard face them. I have used several products for the hard facing, Ranite D, Stoody 31, Harder-n-helle, Lincoln wearshield 60 which I believe is the same as Lincore 60. These rods have a Rockwell hardness of 60-63(except the Stoody31, about 50RC). It just don't friggen matter, they all wear the same. He actually only runs the machine for 3 days a week then tears down to build up the hammers. These are mang. type hammers at that. I think the only thing that would help to see a noticeable difference in wear would be to use tungsten carbide type hard face material. We are going to try this process soon.
I couldn't imagine the wear involved on something that is mild steel after seeing what it does to these mang. hammers after only 3 days.
Good luck with it.
Dr. D