best tig rod for DOM cage?

[Lone Ranger in Oregon]

what Tig rod do you prefer for weldong a DOM cage. I prefer to use stainless rod on some of my ridged parts but I dont think it will be the correct choice for the cage. what Rod and why I am leaning twards good old ER_70_02.

[Rprice]

thats what i would use. .045 or 1/16

[loufish]

prefer to use stainless rod on some of my ridged parts but I dont think it will be the correct choice for the cage

What stainless do you use, when you use it?...312, 0r 309?

[Wild bill]

70s-2 3/32 dia.

[Paul Jacobs]

70s is industry standard on everything including 4130.

[creynolds]

70s-2 3/32 dia.

Whoah...coat hanger!:D Just kidding.....to each their own. I prefer 70s-2 .045

[djblakely]

I prefer to use 70S-6, it offers better edge wetting by adding silicone and magnesium into filler material. I use this rod on all my 4130 welding. I would use it on 1020 DOM just the same. I like the smaller 1/16" rod for most work, any bad fit up I jump to 3/32"

Run it cool enough to get the straw colors in your welds.

[glamisrnr]

noob question, do I just use regular MIG wire for welding DOM? I have .032 wire in my machine right now.

[NicksTrix]

noob question, do I just use regular MIG wire for welding DOM? I have .032 wire in my machine right now.

all depends what the wire is. pull the spool out and see what it's tagged. more than likely it is a 70S series wire. is it a flux core or solid, you don't mention that.

[glamisrnr]

Forgot about that. its solid I dont have the welder here but its what came with the welder. Its a Millermatic 210.

[151fab]

I prefer to use 70S-6, it offers better edge wetting by adding silicone and magnesium into filler material. I use this rod on all my 4130 welding. I would use it on 1020 DOM just the same. I like the smaller 1/16" rod for most work, any bad fit up I jump to 3/32"

Run it cool enough to get the straw colors in your welds.

I'll second the 70s-6. Better for 4130 than 70s-2 and it's the standard for Mig too

[brandon1026]

I and most people i know run the 70s-6

[TUBETECK]

ER70- series rods. The nickle and chrome content in the stainless rod will make the weld more on the brittle side unless your using 309 which is for dissimaler metals, in which case you might as well use ER70 filler rod.

[Scooterinvegas]

I dont mean to hijack the thread, but what about ER70 vs ER80 on 4130??

[DUMP!]

I dont mean to hijack the thread, but what about ER70 vs ER80 on 4130??

ER 80 will heat treat ER 70 will not. Use ER 80 on things that are going to the heat treater and the weld will get harder just like the parent material. ER 70 will not get any harder and will remain more ductal.

Dump

[loufish]

ER 80 will heat treat ER 70 will not.

How far will that take the heat treat. I've been building camera car suspension parts that are highly loaded and getting them to about 34-36 Rc....The rod we use is a dissimilar metal, high strength, high elongation chrome/stainless that is supposed to got to about 40 Rc if needed to...

[DUMP!]

How far will that take the heat treat. I've been building camera car suspension parts that are highly loaded and getting them to about 34-36 Rc....The rod we use is a dissimilar metal, high strength, high elongation chrome/stainless that is supposed to got to about 40 Rc if needed to...

I'm not sure. Best check with the welding supply and get a spec sheet for the rod. The way I understand it ER 80 is exactly like what you discribe for dissimilar metals and all. The welding supply I use sells it as a replacement for 502 rod. I was told that 502 was also good for welding dissimilar metals. Bill Savage is who told me that the 502 is what should be used for heat treated parts and that the ER 80 is its replacement/substatute. That when used, it is stronger then ER70 and more forgiving then welding with 4130 rod for a part that is intended to be heat treated.

Dump

[BallisticFab]

ER80s is the only thing we use here, heat treated or not. Holds much better and seems to weld nicer as well.

[tomahawkracefab]

ER80s is the only thing we use here, heat treated or not. Holds much better and seems to weld nicer as well.

x 2 ...

[loufish]

I'm not sure. Best check with the welding supply and get a spec sheet for the rod. The way I understand it ER 80 is exactly like what you discribe for dissimilar metals and all. The welding supply I use sells it as a replacement for 502 rod. I was told that 502 was also good for welding dissimilar metals. Bill Savage is who told me that the 502 is what should be used for heat treated parts and that the ER 80 is its replacement/substatute. That when used, it is stronger then ER70 and more forgiving then welding with 4130 rod for a part that is intended to be heat treated.

Thanks, I'll get some ER 80 and give it a try....must be cheaper then the hi dollar rod we use now...

[BallisticFab]

Thanks, I'll get some ER 80 and give it a try....must be cheaper then the hi dollar rod we use now...

Still probably twice as much than er70s, but well worth it.

[Triaged]

ER80s is the only thing we use here, heat treated or not. Holds much better and seems to weld nicer as well.ER80s-What? There are a bunch of different types. Any particular brand you like?

[shake'n'bake]

I use ER80S-D2 and it welds really nice, but will cost a little more.