>Can any body help me about low temperature bolts at -90 deg c design(for
>liquid nitrogen).In our plant min temp -46c only. will A320 sustain that
>temperature.
You can get some guidance from Paragraph UG-66 of Section VIII Div1 of
the ASME Code. Typically cryogenic temperatures require austenitic steel.
ASTM A-320 covers a lot of different high alloy bolting materials.
You might want to check that operating temperature. The critical point of Nitrogen is -146 C at 33 atm. You can liquify nitrogen at higher temperature than the critical temperaure but the pressures get high.
Christopher Wright P.E. |"They couldn't hit an elephant at chrisw@skypoint.com | this distance" (last words of Gen. ___________________________| John Sedgwick, Spotsylvania 1864)http://www.skypoint.com/~chrisw Received on Sun Dec 21 15:34:00 2003
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