Ric, Maybe this will help. From the Pure Sound site. Click on Wire Data. http://www.puresound-wire.com/ Alan > From: Ric Brekne <ricbrek at broadpark.no> > Reply-To: "College and University Technicians <caut at ptg.org>" <caut at ptg.org> > Date: Wed, 31 Jan 2007 23:42:31 +0100 > To: caut <caut at ptg.org>, pianotech <pianotech at ptg.org> > Subject: [CAUT] Breaking strengths / percents > > Hi folks > > I'm looking at how to compensate for use of pure sound wire in > spreadsheets for calculating scales. I have the Tension bit figured > out, but I am unsure of how to deal with breaking tension and % of that. > > Roberts gives a simple 0.557*d^1.667 (d in mils) and result in lbs. > > This is for steel wire with an average density of 7.85 gm /cm^3 and an E > modulus of 192 kN/mm2 > > Pure sound has an average density of 7.87 and an E modulus of 187.5 > > What I need to know is what the formula for % breaking strength for pure > sound is. > > Any help to get out there ? > > Cheers > RicB >
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