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Welding Rod Question

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Welding Rod Question

Postby p40whk » Thu Jan 21, 2016 4:05 pm

For welding most Steel, is 312 Stainless better as welding rod in lieu of the E70S2?

A contradiction in Jody's TIG Basics email lessons has me a bit confused. In one lesson Jody recommends 308 and E70S2 for Steel and in another he recommends 318?

On lesson number 2 he stated the following:

"Tig Welding Rod - 90 % of everything you will tig weld can be welded with 3 different tig rods. 308 for welding stainless, E70S2 - for welding mild steel and 4130, and 4043 for welding aluminum. There are all kinds of rods for specific applications but these 3 rods will handle most of the tig jobs you will do."


Today I got Jody's Seventh email lesson and it had a different list for welding rod:


"1. 312 stainless ( I previously recommended Hastelloy W but the price has gone to over 100 us dollars per lb.)
2. Aluminum Bronze
3. 4043 Aluminum

* Hastelloy W will weld any steel. Let me say that again. ANY STEEL! Tool steel , low medium and high carbon steels, low alloy steels, 4130, stainless steels, cast iron, nickel alloys, cobalt alloys, and each of these to any of the others. The "W" in Hastelloy W should stand for "Wonder Rod". its almost magic. 312 stainless is almost as good. But not quite....just much more affordable.

* Aluminum Bronze will weld any copper alloy to any other copper alloy. It is also an great rod for tig welding cast iron and for welding steels to copper alloys.

* 4043 aluminum is the most commonly used tig welding rod for general purpose aluminum welding."



So, Not having a need to weld Stainless at the moment I purchased some E70S2 and 4043 to get me started, should I replace the E70S2 with 318 when I run out and use that exclusively for all steel?
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Re: Welding Rod Question

Postby rick9345 » Thu Jan 21, 2016 4:30 pm

did you mean "308"? or 312 as opposed to 318
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Re: Welding Rod Question

Postby p40whk » Thu Jan 21, 2016 4:48 pm

rick9345 wrote:did you mean "308"? or 312 as opposed to 318


That's why I'm a bit confused,

In the first lesson he says that you really only need E70S2 for mild steel and 308 for Stainless.

Then in the next lesson he says that 318 is better and will work for both stainless and mild steel.

So I guess what I'm asking is this; if 318 will work for mild steel, 4130, and stainless steel is there a need to even keep and or use E70S2 or 308?
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Re: Welding Rod Question

Postby Oscar » Thu Jan 21, 2016 7:38 pm

There's a ER318 tig filler rod?
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Re: Welding Rod Question

Postby LtBadd » Thu Jan 21, 2016 7:45 pm

p40whk wrote:
rick9345 wrote:did you mean "308"? or 312 as opposed to 318


That's why I'm a bit confused,

In the first lesson he says that you really only need E70S2 for mild steel and 308 for Stainless.

Then in the next lesson he says that 318 is better and will work for both stainless and mild steel.

So I guess what I'm asking is this; if 318 will work for mild steel, 4130, and stainless steel is there a need to even keep and or use E70S2 or 308?

I've never heard of a 318 filler, perhaps it was a verbal mistake. If you want a multipurpose stainless filler choose 312
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Re: Welding Rod Question

Postby p40whk » Thu Jan 21, 2016 7:56 pm

Oscar wrote:There's a ER318 tig filler rod?


I guess it would help if I were to proof what I wrote a little better :oops:

Not sure where I got the 318 from, getting old and being new to TIG I don't have the numbers committed to memory yet.

So that leaves me with the question; is 312 a better option (if it will work for both) than using a combination of 308 for just stainless and and 70S2 for the rest of the ferrous metals?

Being new to TIG I don't have the experience to know whether the performance of one rod is that much better for specific metals over another.
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Re: Welding Rod Question

Postby Poland308 » Thu Jan 21, 2016 8:41 pm

I keep 70s2, 309, 316, and 4043 on hand. That takes care of all but the specialized stuff. But I don't do a lot of aluminum yet.
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Re: Welding Rod Question

Postby dirtmidget33 » Thu Jan 21, 2016 9:26 pm

here is some thoughts on using stainless to weld steel
1. can it be done=yes
2. should it be done=NO and yes :? DEPENDS what does this weld do?

Your best bet is to match your base metal as best you can except when you have to use a different filler to achieve desired properties out of the weld. Best example is when 4130 gets welded with ER70S-2 or ER80-D2 instead of 4130, in this case the base metal gets diluted with filler to create a less brittle weld. Another example is 4043 aluminum gets its strength by being diluted with base metal. PLEASE don't weld 4130 with stainless or any other wonder filler. If you are spending money on this material it is prolly for a critical job so weld it correctly. 4130 is one of my pet peeves on what some individuals do to it.

For starting out your best bet is get your self some
ER70-S2 for steel jobs
308L for stainless jobs
4043 or 4943 for aluminum jobs thinking about phasing out all my 4043
309L for Stainless to steel jobs add when you need it

These fillers will allow you to do most jobs with steel, stainless and aluminum. As time goes on and as what your welds need to actually do, you will add fillers that are better suited for certain jobs.

In order to weld almost anything you will wind up with a filler collection that looks like this. I carry about 3 to 4 different diameters of several fillers along with different types. Currently up to 25 tubes and reason some of them are on the floor is I'm adding more storage room to the wall rack. The larger tubes hold 10lbs are 5lbs of lighter weight materials.
0121161644.jpg
0121161644.jpg (52.38 KiB) Viewed 686 times

0121161645.jpg
0121161645.jpg (40.27 KiB) Viewed 686 times

0121161647.jpg
0121161647.jpg (35.1 KiB) Viewed 686 times
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Re: Welding Rod Question

Postby p40whk » Thu Jan 21, 2016 9:36 pm

Thanks for that clarification Dirtmidget, I did pick up some 70-S2 as well as 4043 and had planned to get the other filler rods as the welds required.

I write technical manuals for a living so I tend to over analyze instructions a bit and Jody's instructions made me question what I thought I knew.

Obviously there's no substitute for experience but the wealth of knowledge here is a close second.

Thanks to everyone for chiming in, your advice is appreciated.

My knew machine showed up on my door step today so now I need to find or design a good set of plans for my first project which I think should be a welding cart.

Love the storage you have and it would be nice to incorporate that into a stand.
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Re: Welding Rod Question

Postby Oscar » Fri Jan 22, 2016 8:11 pm

dirtmidget33 wrote:here is some thoughts on using stainless to weld steel
1. can it be done=yes
2. should it be done=NO and yes :? DEPENDS what does this weld do?

Your best bet is to match your base metal as best you can except when you have to use a different filler to achieve desired properties out of the weld. Best example is when 4130 gets welded with ER70S-2 or ER80-D2 instead of 4130, in this case the base metal gets diluted with filler to create a less brittle weld. Another example is 4043 aluminum gets its strength by being diluted with base metal. PLEASE don't weld 4130 with stainless or any other wonder filler. If you are spending money on this material it is prolly for a critical job so weld it correctly. 4130 is one of my pet peeves on what some individuals do to it.

For starting out your best bet is get your self some
ER70-S2 for steel jobs
308L for stainless jobs
4043 or 4943 for aluminum jobs thinking about phasing out all my 4043
309L for Stainless to steel jobs add when you need it

These fillers will allow you to do most jobs with steel, stainless and aluminum. As time goes on and as what your welds need to actually do, you will add fillers that are better suited for certain jobs.

In order to weld almost anything you will wind up with a filler collection that looks like this. I carry about 3 to 4 different diameters of several fillers along with different types. Currently up to 25 tubes and reason some of them are on the floor is I'm adding more storage room to the wall rack. The larger tubes hold 10lbs are 5lbs of lighter weight materials.
0121161644.jpg

0121161645.jpg

0121161647.jpg


Great info. Oh, and BTW, challenge accepted! :twisted:
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Eastwood Versacut 40A Plasma cutter
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