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Re: charpy v notch toughness

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>what is the correct standard requirement for charpy v notch toughness for 
>weld material for full pen welds?
It varies. The usual minimum is 15-20 ft-lb at temperatures at or below 
your normal service temperatures.  It won't vary with the weld detail. 
Charpy V energy reflects the toughness (the ability to absorb energy by 
yielding) of the weld detail in the presence of a notch. The AISC 
Publication 'Properties of Bridge Steels' has a really good section on 
impact toughness.

Christopher Wright P.E.    |"They couldn't hit an elephant from
chrisw(--nospam--at)        | this distance"   (last words of Gen.
___________________________| John Sedgwick, Spotsylvania 1864)

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