What is the basis of selecting E6013 for Cr-Mo steel?
Why diffusion hydrogen level required for E6013, when it is not a low
hydrogen electrode?
One can't compare the stress value with two different AWS
classifications; instead you can study by taking two different batches
of E9015B9 electrodes with different diff H2 levels (not comparing with
E6013) and test it!
Members please share your thoughts
-----Original Message-----
From: materials-welding@googlegroups.com
[mailto:materials-welding@googlegroups.com] On Behalf Of mech
Sent: Wednesday, June 11, 2008 7:49 PM
To: Materials & Welding
Subject: [MW:846] on preheating effect
dear sir
i am a welding engg student and doing project on hydrogen cracking
of cr-mo steel by using implant test method.
the following result were observed
electrode diff hydrogen
level critical stress
E6013 (ruttile type) 5
ml 456 mpa
E9015 B9
10.6ml 500 mpa
according to theory if hydrogen level increases critical cracking
stress will decreases but in my exp critical cracking stress is coming
more in low level of hydrogen
i would like to have your comment on this result
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