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rick9345 wrote:did you mean "308"? or 312 as opposed to 318
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?
Oscar wrote:There's a ER318 tig filler rod?
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.