Which steel tig filler?

admin

Im still learning so bear with me.I had been using ER70-S6, Seemed to weld alright. A buddy dropped me off some ER80-D2  It welded alot better it seemed.Are there other better fillers, whats the difference between these 2? Uses?
Reply:what are you doing?for steel i use 70S-2...zap!I am not completely insane..Some parts are missing Professional Driver on a closed course....Do not attempt.Just because I'm a  dumbass don't mean that you can be too.So DON'T try any of this **** l do at home.
Reply:This link has some basic info on TIG filler.http://www.esabna.com/EUWeb/FM_handbook/577fm3_1.htmWith MIG, I've seen a large difference in fluidity and wetting between ER70S-2 and ER70S-6, with the -2 being fast freezing and -6 being more fluid and better wetting at the toes, assume TIG may be similar.
Reply:Ever try RG45 or RG60 with a TIG toch?  The OFW rods wet out much better than the TIG rods.
Reply:ER80-2 will work fine on steel its actually chromemoly tig wire which adds one half of a percent moly to the steel  wire tensile is 110,000 . the steel fill fail long before the weldLance
Reply:would using a 308L(stainless) wire for mild steel (low, med, or high carbon) be ok. Would it hurt the integrity of the weld? The reason i ask is I have it at my disposal easily...
Reply:308 will work fine for mild steel, but it will not be any stronger than using Er70S-_.  Your heat affected zone should be your weak link, not the weld...so even using the 80S won't make your weldment any stronger.Zap...try some ER70S-6.  It is basically the same makeup as the S2, but has more silicone in it.  It "flows" a bit better and helps to get impurities out of the metal a bit more.  The cost is very near the same.  I'd bet you will only pay about $1 more per 10lb box.
Reply:Just want caution, that using 308 filler for mild steel is generally not recommended because the resulting chemistry of the weld may result in the formation of martensite and a hardened, brittle, fracture prone weld.  This may or may not be a factor for your particular weld since it depends on the amount of filler and base metal mixed in the weld, the chemistry of the base metal, and the cooling rate of the weld.It is generally accepted that 309 is the filler of choice when welding stainless steel to carbon steel since the alloy content is such that the resulting weld will remain austenitic, and ductile.This link is one source of general info on dissimilar metal welding.http://www.esabna.com/EUWeb/AWTC/Lesson5_18.htm
Reply:Zap...try some ER70S-6. It is basically the same makeup as the S2, but has more silicone in it. It "flows" a bit better and helps to get impurities out of the metal a bit more. The cost is very near the same. I'd bet you will only pay about $1 more per 10lb box.