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Re: Proportional Limit, A36 Plate

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Can I count on the *yield* for A36 plate being over 36ksi, or can I assume
the proportional limit as equal to *yield*?  My only reference leads me to
suspect that the proportional limit for steel could be as much as 10
percent below yield.

There's a reason for this exercise -- I'm checking a stack per ASME
STS-1-1992 (the latest according to ASME website).  If the proportional
limit is significantly less than yield, my allowable bending stress will be
lessened substantially.



From: Charlie Carter <carter(--nospam--at)>
To: 'seaint(--nospam--at)'
Subject: RE: Proportional Limit, A36 Plate
Date: Tuesday, May 15, 2001 1:51 PM

>Does anyone have a "ready" number for the proportional limit for A36
>from 3/16" to 1/2" thick?

Fy for ASTM A36 steel plate is 36 ksi up to and including a thickness of
Above 8" thickness, it is reduced to 32 ksi.


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