How about a bend/break test with welding coupons of the same size (thickness etc...) and see which weld bead (all other things being equal), is stronger? Putting maybe 1/8" 7018AC electrode, vs .030 ER70s-6 against each other on 1/4" or 3/8" mild steel coupons???????
People on YouTube have already compared 6010/6011 vs 6013 vs 6014 vs 7018 etc, but I've yet to see a mig vs stick test. ChuckE2009 did a 7018 break test alone, then did a mig test alone. It seems to me that the mig welds were stronger than any of his 7018 weld bead beat down tests. So, why not compare the two equally?????
7018 and er70s6 are about equal as far as all tests.You can weld over 7018 with er70s6, or er70s6 over 7018. I have welded many carbon steel pipe tig welding the root pass, and fill to cover using 7018. x-rays are sat.....ron
The tensile strengths of both electrodes are aprox.70,000 psi
The tensile strengths of both electrodes are aprox.70,000 psi
Boomer63
- Boomer63
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Right on Steeldr. 70,000 PSI is 70,00 PSI no matter the process. I administer 3G tests in SMAW 7018 and GMAW .035 75/25. I prep the plates and bend them for the CWI. If they pass a bend test, who is going to say which is stronger?
- weldin mike 27
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Mig gets a bad rap because it's easy to do wrong. Done right, its as strong as anything rated at the same tensile strength.
Boomer63
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AMEN weldin' Mike! I can remember on my first welding job, back in the 1970's, and the boss kept me after hours to help weld on a structure to support a trailer hitch on one of the trucks. I asked him if we were going to use the shop MIG, and he told me we were going to use stick because "it will hold better". I found out later that MIG was getting a bad rap not because it was a bad process, but because of untrained or under trained welders.
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In my opinion, the manufacturers published material on the subject could be used instead of smacking things with a hammer.
Although hammers are fun
Here, Lincoln has listed the typical as welded: yeild, tensile, elongation %, and charpy V notch.
(note: the actual requirements are pretty much identical)
Although hammers are fun
Here, Lincoln has listed the typical as welded: yeild, tensile, elongation %, and charpy V notch.
(note: the actual requirements are pretty much identical)
- Lincoln L56 properties.GIF (54.05 KiB) Viewed 6458 times
- Lincoln 7018.GIF (25.28 KiB) Viewed 6458 times
Dave J.
Beware of false knowledge; it is more dangerous than ignorance. ~George Bernard Shaw~
Syncro 350
Invertec v250-s
Thermal Arc 161 and 300
MM210
Dialarc
Tried being normal once, didn't take....I think it was a Tuesday.
Beware of false knowledge; it is more dangerous than ignorance. ~George Bernard Shaw~
Syncro 350
Invertec v250-s
Thermal Arc 161 and 300
MM210
Dialarc
Tried being normal once, didn't take....I think it was a Tuesday.