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pbc76049 wrote:
> FASTEST RACE GLASS ON THE PLANET
> "Dick" <rwripper@prodigy.net> wrote in message
> news:Z2Owf.2267$801.194@newssvr30.news.prodigy.com...
> > Help an old mind come to the correct conclusion <G>.
> >
> > The situation is (2) steel straps side by side and fully in contact with a
> > bolt hole at each end . One is 4130 with about 80,000 psi tensile and the
> > other a heat treated 4130 to a 124,000 psi tensile strength.
> >
> > Is the combination strength 80,000 or 124,000 or
> > 204,000 psi tensile??
> >
> > Thanks, Dick
>
> GOD NO
>
> Tensile strength is stated in PSI per unit area, usually a square inch.
> If you think about this for a minute, ask the question.
> How can 2 pieces of metal, one that will carry at most
> 124KSI, carry 204 KSI if each of them will have failed
> way before reaching that load??
> You cannot add them up. You need to look at the applied
> load, figure the differences in elongation and what it will
> do to the joint. This is not particularly hard, you just need to
> look at the charts and do the math. There are many good
> books out there......
i.e.: pick one material or the other and size it to carry the desired load.
Richard
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Re: Tensile Strength Question
