I believe that any steel 1" bar will flex about the same amount. The
question is how far can you bend the steel before it reaches its
elastic limit. That parameter will vary.

I suggest you go check out "Machinery's Handbook" from your local library.
There have been 26 editions, but any will do. Look in the index for the
term "elastic limit" and follow the reference and start reading. Or, if
you're more comfortable online, try googling for that term.

Grant

Jim wrote:

I have a shop making a digging tool which I resell. They use CRS 1".
My customers want to know what it would take to bend this bar if they pry
with it.
short of immobilizing one end of the bar in a horizontal position and adding
weights to the end of it, how can I describe it's "bendability"? *and*
where can I find that info?
I realize there are a lot of variables, like how long the bar is (48"), and
the range of temper and tensile strength it reached during it's manf., but
given all the above, what would it take to bend this bar?

Thanks for your input.
Jim