[TheForge] Prybar question

[Barking Crow]

A friend dropped off a two pronged commercial wrecking bar and a list of
modifications he'd like made to it, or rather modifications he'd like
incorporated into two more he wants me to make.  I expect to be paid in
lunches so I'd like the project to come out well.  The two prongs that are 3
1/2" apart and designed to go down between deck boards and pry them up
efficiently are made of 1/4 plate on edge that tapers down to 3/16 at the
point, and then back up to 1 1/4" wide at the curve which is 4" back from
the tip and designed to roll back and lift the tip and the decking caught
above it, up.  My question is whether or not I need to use some steel other
than mild 1/4 plate like I have lots of lying around?  Will the mild steel
hold up to the pressure of prying wood loose from ring shank nails and
whatever other torture can be dreamed up for a job site prybar.

Any advice will be appreciated.

Jeff Valentine in Tallahassee where it is scheduled to go to 78 degrees
today and I'm already getting nervous about summer's approach