Which Electrodes/Wire A572

[stickermigtigger]

Have a customer wanting you attach a bracket made from A572 to a tractor bucket that is most likely A572 as well. I’d use E7018/8018 sticks for this.

What GMAW wire would you folks suggest. Will ER70S-6 work or will I need to purchase another filler metal?

I looked for a chart that would match filler to work material but didn’t find anything. I can’t believe there isn’t something like that and I just don’t know what I’m looking for correctly.

[aametalmaster]

Myself i would use a dual shield mig wire and co2...Bob

[MMW]

Ditto with Bob or a t11 wire but why not use 7018/8018? It is just a bracket so the time saving is non existent I would think? Not knowing the application I would shy away from er70s wire.

[stickermigtigger]

I most likely ‘will’ use 7018 as I don’t have any dial shield or CO2 in stock. But I’ve got this new MMatic 255 I keep looking for things to weld with so that’s where my wire question comes from.

[ryanjones2150]

Get you some dual shield. I love that stuff. Some of the stuff I have runs on C25.

[aametalmaster]

Dual shield is so well used in shops most don't have stick machines anymore...Bob

[ryanjones2150]

This time of year, I tend to stick weld more than I do when the weather isn’t trying to air fry my brain. A couple of the shops I work in, let’s just say those mechanics would hang me high if I turned those fans off.

[MMW]

I run esab 7100 ultra with 75/25 mix. If you think you will have some heavier stuff to do I would get a spool of .045 to keep around.

[ryanjones2150]

I was running that 7100 ultra and I switched to the select-arc 730....supposed to be resistant to the humidity I live in. Seems solid so far and it runs on 75/25.

[aametalmaster]

I ran ESAB 7100 everyday with 75/25 at work. Then the QC made me switch to CO2 because my certs didn't cover 75/25...Bob

[Thrutraffic]

ESAB states on their web page: "Dual Shield 7100 Ultra can be used with either 100% CO2 or 75% Ar/25% CO2"

I guess QC or customer specs can override that but at least the manufacturer thinks it's ok which works for me cuz I AM QC in my shop. LOL

[MMW]

When I worked in a fab shop we used CO2 with 7100 ultra because it was cheaper than mixed gas. If you are running it all day long everyday it adds up. Now working for myself I don't run it all the time so I just run 75/25 mix instead of having another bottle around. I have also heard, but no data from me to back it up, that it runs a little hotter with CO2.

[aametalmaster]

Had i taken my certification with 7100 and 75/25 thats what i would have to use but i used C02 because it was specific to the test..Bob

[stickermigtigger]

MMW: I can understand this as CO 2 is what’s used to achieve globular transfer which is a lot hotter process with greater penetration than other processes.

[ryanjones2150]

Friend of mine works at a pretty big fab shop locally, they make brush hogs and other small tractor implements there, but they changed to straight CO2 a couple years ago strictly based on the cost. I’m sure they use a lot. It’s one of those shops where the shielding gas is piped around from an upright bulk storage tank
outside.

He hates it. Well, hate is a strong word....he would very much prefer to use C25, and he’s the shop foreman. They use a lot of dual shield there, but he says all they get is the cheapest wire the purchasing agent can find.