Re: hardness testing
From: CWatters (colin.watters_at_pandoraBOX.be)
Date: 03/21/05
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Date: Mon, 21 Mar 2005 17:03:21 GMT
"als" <astilger@yahoo.com> wrote in message
news:1111423350.280113.104490@f14g2000cwb.googlegroups.com...
> can anyone please supply me with a conversion of hardness testing. i am
> currently using the rebound method aka Leeb's method. the units that
> are given on the readout are not workable. in the owner's manual it is
> stated that the value "L" (hardness value) is the quotient of the
> impact body's rebound and impact velocities, multiplied by 1000. i
> would prefer to have something in SI units. thank you.
This paper...
says there isn't a mathematical formula for doing the conversion. Aparently
instruments use lookup tables but Figure 11 looks like quite a good straight
line to me.
Try....
HRC = 0.1375*L - 48.75
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