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<DIV><FONT face=Arial size=2><FONT face="Times New Roman" size=3>"At 03:24 -0400
10/4/08, Dean May wrote:<BR><BR>>...I haven?t yet been able to substantiate
Mike?s claim that with <BR>>modern piano wire the yield strength is closer to
the ultimate. I <BR>>have found sources that place it at
43-35%..."</FONT></FONT></DIV>
<DIV><FONT face=Arial size=2><FONT face="Times New Roman" size=3>Yes, I also
found the 43 % number for ASTM 228 which is the spec for modern music
wire. I was quite surprised actually, because my 30 year old textbook
suggested yield was 75 percent of ultimate! None the less, steel doesn't
get tired, so it would either yield immediately, or......there is something that
further stresses it later. I'm keeping an open mind as the discussion
continues, but for now my vote is still that it is not
stretching!</FONT></FONT></DIV>
<DIV><FONT face=Arial size=2><FONT face="Times New Roman"
size=3>
Mike </FONT></DIV></FONT></BODY></HTML>