] [Thread] [Date] [Author]

[davisp2(--nospam--at)earthlink.net]

Kipp,

A490 is quenched and tempered steel. Applying heat to Q&T steel is always a bad idea.  From experience, after the weld cools, one good whack with a 5# hammer will break the bolt off. Why an A490 bolt? Can't a piece of threaded rod work?

Davis G. Parsons II, PE
Engineering Manager
Irwin Steel
"Just west of Texas Motor Speedway"

-----Original Message-----
From: Kipp Martin  <KMartin(--nospam--at)carollo.com>
Sent: Oct 26, 2005 10:15 AM
To: seaint(--nospam--at)seaint.org
Subject: Welding High Strength Bolts

I reviewing a remedial detail proposed by a contractor that involves
welding an A490 bolt to an A36 plate.  Welding a high strength bolt does
not seem like a good idea to me, but I haven't been able to find any
thing in the literature saying yes or no.  Can anyone point me to some
information on the do's and don'ts of welding high strength bolts?



Kipp A. Martin, P.E., S.E.
Carollo Engineers
503-227-1885
503-227-1747 (fax)
kmartin(--nospam--at)carollo.com

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