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309 rods
Posted: Fri Apr 05, 2013 1:48 am
by MidnightMusic
So im doing a weld test for Jacobs and its a vertical v groove and an overhead v groove with 309 ss all the way and thay are x rayed. Has anybody ever done anything like this? what are your thoughts? I passed my vertical after a day and a half lol
Re: 309 rods
Posted: Fri Apr 05, 2013 7:57 am
by Alexa
MidnightMusic.
Are you welding stainless steel to carbon steel?
Alexa
Re: 309 rods
Posted: Fri Apr 05, 2013 5:50 pm
by Otto Nobedder
This test is usually carbon-to-carbon with 309, as it really tests your ability to control the puddle and the undercut. Usually, once you pass this, what they ask you to do is easy by comparison.
A side note-- When TIG welding carbon steel, where I have no access to clean the back side of rust, I'll use 309 for my root pass. It helps eliminate porosity from the rust "boiling" out, especially with a backing bar trapping rust.
Steve S
Re: 309 rods
Posted: Fri Apr 05, 2013 6:53 pm
by Alexa
OttoNobedder.
Tanks.
Alexa
Re: 309 rods
Posted: Sat Apr 06, 2013 2:55 am
by MidnightMusic
Yea it was carbon coupons
Re: 309 rods
Posted: Sun May 19, 2013 10:09 pm
by Vince51
I really love stainless stick. Had to post on this one. You welding into a backing or is it open butt?