Originally Posted by
Wingbone
A 45 deg. bevel on your edges will be very blunt, you'll have a very robust edge, but I don't think you can get very slicing sharp edge on 45 deg.. Even the edge on an axe doesn't go much over 30 deg. You may want to rethink you edge geometry. The steels you mentioned are excellent for holding an edge. Use the right heat treat to insure a durable edge.
Im going to disagree based on the fact that I am a custom knife maker and own a broadhead sharpening guide company and have been sharpening metal edges for decades. 22.5 degrees (per side) is a common angle for 4 blade broadheads and will produce a hair popping, shaving sharp edge. I know this because I do it with great regularity. Aside from that, even on broadheads in which the blades can be removed, 22.5 and 23 degrees is common.