To: "'seaint(--nospam--at)seaint.org'" <seaint(--nospam--at)seaint.org>
Subject: RE: A992 welding - E70XX low hydrogen?
From: Bart Needham <bartn(--nospam--at)ckcps.com>
Date: Thu, 22 Jun 2000 14:50:56 +0100
Subject: A992 welding - E70XX low hydrogen?
I have been assuming that the welding electrodes for
the new A992 are to be the same as A572 Gr 50 - E70xx,
low hydrogen but haven't seen it in writing yet. Can
someone confirm this? This is probably a stupid
question but I will ask it anyway, when you weld an
A36 plate to an A992 beam, should the low hydrogen
electrodes be used?
I believe AWS D1.1 mandates low hydrogen electrodes for any material with a
specified yield of 50ksi or greater. I would have to check and see if this
depends on the process as well, but I know this holds for SMAW.
You should also watch the notch toughness if it is important, because some
low hydrogen material may have poor notch toughness.