ESAB Atom Arc 7018

[DVA]

the talk about moisture is way overdone

That is not true. The fluxes on sticks have alloying elements that provide elements to get the correct mechanical properties of a particular filler material. Water on 7018 can lead to hydrogen in the weld and lead to cracks that form after some time. It may not look apparent but is a huge issue and why you typically see many sticks in ovens to keep the water out.

[SeanMurphy265]

That is not true. The fluxes on sticks have alloying elements that provide elements to get the correct mechanical properties of a particular filler material. Water on 7018 can lead to hydrogen in the weld and lead to cracks that form after some time. It may not look apparent but is a huge issue and why you typically see many sticks in ovens to keep the water out.

I agree, 7018 will not weld/arc worth a crap if they get moisture. My question is about Esab Atom Arc 7018. Are they better at keeping moisture out?

[geezer]

I agree, 7018 will not weld/arc worth a crap if they get moisture. My question is about Esab Atom Arc 7018. Are they better at keeping moisture out?

Haven't used the Atom Arc 7018,,,but I would not hesitate to buy them,,,after all Esab (OK) invented the coated welding electrode ..they must have improved on them since 1904 when they started Esab...

[fdcmiami]

That is not true. The fluxes on sticks have alloying elements that provide elements to get the correct mechanical properties of a particular filler material. Water on 7018 can lead to hydrogen in the weld and lead to cracks that form after some time. It may not look apparent but is a huge issue and why you typically see many sticks in ovens to keep the water out.

what i do when i want to try something is go out and buy it. why don't you try that. let's see, if dva tells you it's ok, you're going to buy some. talk about the blind leading the blind. lol

[DVA]

what i do when i want to try something is go out and buy it. why don't you try that. let's see, if dva tells you it's ok, you're going to buy some. talk about the blind leading the blind. lol

I do not think it matters much about the name on the box, but was just trying to point out that water can make a difference. I would not want someone’s trailer hitch to fall off or other issues because they were using wet 7018 and thought it was no big deal.

[fdcmiami]

I do not think it matters much about the name on the box, but was just trying to point out that water can make a difference. I would not want someone’s trailer hitch to fall off or other issues because they were using wet 7018 and thought it was no big deal.

dva, the name on the box is everything to most welders. ask a guy who run 20 pounds of lincoln excal a day how he'd like running some hobart for a couple of days. haha. there is some serious brand loyalty out there. the moisture/7018 discussion has become cliche; if you can't run some 7018 that's been out of the can for while you probably can't weld at all.

i have a fifty pound can on the shelf at my shop, it's two thirds gone, been there about a year. i weld, no problem and it's hot and humid where i am. do you think everyone throws their rod away? at 100 plus for a fifty pound can, that's not likely. when i see rust on the ends of the rods then maybe i'll start to think about getting some more.

for the record there are several manufacturers that produce a moisture resistant welding rod. they will have the letter R on them. 7018 H4R comes to mind. using the AC rod on an inverter in place of a regular 7018? right.

wet? i have welded with wet rod, in the rain, in the pouring, driving rain. would i advise it, no. caught a couple of nice thumpers doing that when grabbing the electrode while in the stinger.

[SeanMurphy265]

I'm not trying to start an argument, but you cannot tell that 7018 rods that have been sitting around the shop; weld as good as 7018 from a fresh can or straight from the rod oven. I have welded with lincoln exaliber 7018 that have been sitting out and you can weld with them, but you will have some rods that stick. I have tried Hobart 7018 that have been opened for a couple of weeks and you can hang it up. When I worked in structural steel all of your 7018 rods had to be in a rod oven, and the temperature was documented daily. We had to do this for the shop's certifications. When I crawl underneath something and I'm welding all out of shape I want a rod that will light up and run without sticking. That's the point of asking about Esab Atom Arc 7018 rods. The humidity here in Mississippi is terrible and it will affect my assortment of welding rods over time.

[DaveO]

I scanned thru the esab website and didn't see any mention of particular moisture prevention coating on 7018s. You'd think they'd brag on it if they had any kind of edge on the competition.

"Esab invented the coated electrode" Hmmm, I think they get to say that because they bought the Linde div of Union Carbide lock stock and electrode stinger.

FWIW Sean, if you go FDC's route and give Esab electrodes a try and then write up your comments they'll send you some gear.

[DVA]

[QUOTE=fdcmiami;44146]dva, the name on the box is everything to most welders... there is some serious brand loyalty out there. the moisture/7018 discussion has become cliche; if you can't run some 7018 that's been out of the can for while you probably can't weld at all.

i have a fifty pound can on the shelf at my shop, it's two thirds gone, been there about a year. i weld, no problem and it's hot and humid where i am. do you think everyone throws their rod away? at 100 plus for a fifty pound can, that's not likely. when i see rust on the ends of the rods then maybe i'll start to think about getting some more.

for the record there are several manufacturers that produce a moisture resistant welding rod. they will have the letter R on them. 7018 H4R comes to mind. using the AC rod on an inverter in place of a regular 7018? right.QUOTE]

There is some serious brand loyalty but 7018 is 7018 and all 7018 will have issues if it is old and stored wet. The issues when welding would not show up much if you know how to weld and even if 7018 is stored around moisture it will still be fine for a fence or BBQ. If you are welding on a bridge or steam piping (code welds), if a 50 lb box was opened and not handled properly it should be thrown out and this happens all the time as it would be a violation of most welding procedures in any reputable shop.

See the attached links below regarding moisture:

See the storage instructions for this rod-
http://www.hobartbrothers.com/upload...ts/7018XLM.pdf

H4R, storage in oven is recommended:
http://www.hobartbrothers.com/upload...obart718MC.pdf

Did not need to go far for this one-
http://www.everlastgenerators.com/wo...e-7018-part-5/

H4R-
http://www.lincolnelectric.com/en-us...4r-detail.aspx

[SeanMurphy265]

Where I live the humidity can reach 100% in the summer and is just about always over 90%. Those sheets state the over 80% humidity they need to be stored in a rod oven.

[Rambozo]

Where I live the humidity can reach 100% in the summer and is just about always over 90%. Those sheets state the over 80% humidity they need to be stored in a rod oven.

The shop next door to mine the guy kept all his rods in an old refrigerator with silica gel and a hundred watt light running in the bottom. Not a replacement for a rod oven, but a cheap way to have air tight, low humidity storage.

[DVA]

Where I live the humidity can reach 100% in the summer and is just about always over 90%. Those sheets state the over 80% humidity they need to be stored in a rod oven.

That is correct, that is why you see any reputable company store their opened rods in a rod oven, even in a dry climate like Arizona.

One thing I have seen lately from a power plant in Washington State that stores their rods in vacuumed sealed packages of 10, eliminating the need for rod ovens. This may be impractical but not a bad idea if you want to keep your rods fresh. I would think purchasing a rod oven would be more economical.