Can I use ER 312 for all my steel tig welding needs?

admin

I got some er 312 to tig some stainless bolts to mild steel. I like the look of the bead. Any reason I couldn't use it for all my steel tig welding needs including mild steel to mild steel?Miller diversion 165Miller mig 211Hypertherm pm 30Milwaukee 6230 14 inch chop sawMd 45 mag drill (RIP; fell on its head)New MD 45! Thanks to the esposa!Finally got an O/A setup
Reply:No reason you cant use it for mild steel to mild steel. AS long as it for nothing criticle or code.My concern however would be the cost. Much more expensive than using 70s-2 or 70s-6.It would much more cost effective for you to get better with 70s-2 for your mild steel work.I use 316L or 317L for all my stainless work. You should be using 309 for mild steel to stainless steel work.JasonLincoln Idealarc 250 stick/tigThermal Dynamics Cutmaster 52Miller Bobcat 250Torchmate CNC tableThermal Arc Hefty 2Ironworkers Local 720
Reply:I wasn't sure but the description said 312 would work for ss to mild. You think 309 is the best for that?Miller diversion 165Miller mig 211Hypertherm pm 30Milwaukee 6230 14 inch chop sawMd 45 mag drill (RIP; fell on its head)New MD 45! Thanks to the esposa!Finally got an O/A setup
Reply:Your 312 is about 30%Cr and 9-10%Ni and will work better as carbon content increases like with tool steel. It will give you a beautiful gold bead welding cast iron to steel??? It's a duplex filler but should never be used for welding real duplex steels. This is the starting point wire for stuff like Supermissleweld, Eutectic 680, Allstate 275, Weld Mold 880 etc. etc.The 309 is 20%Cr and 12-15%Ni and gives a very tough weld for dissimilar materials. Usually a bit less money than the 312SS. Depending on the base material it can come up with duplex steel properties too.Matt
Reply:312 is commonly used for welding dissimilar steels when strength is more important than corrosion resistance. Other than cost, there are no real disadvantage to using it for everyday maintenance welding.Try 312 stick electrodes too. Real nice-looking beads, smooth-running rods.JohnA few weldersA lot of hammersA whole lot of C-clamps
Reply:Silicon-based, I grew up in Chatham, I miss it. We were just north of the light house, south of the fish pier. Anyway, what is electrode rod?Miller diversion 165Miller mig 211Hypertherm pm 30Milwaukee 6230 14 inch chop sawMd 45 mag drill (RIP; fell on its head)New MD 45! Thanks to the esposa!Finally got an O/A setup
Reply:Originally Posted by [email protected], what is electrode rod?
Reply:No. Welding Costs increase trifold. See, you want to weld Mild Steel to Mild Steel use ER70S2. Want to weld Mild Steel to Stainless Steel, use ER 309L. Want to weld a medium Carbon Steel to Stainless Steel, then use ER 312 to reduce the dilution problem. It depends on the criticality of the Application.
Reply:ER312 is a very versatile repair/maintenance consumable.It can be used to weld carbon steel but I would go with fusionblr's advice.No point in throwing away money.
Reply:Hi Scott here.  I use 312 a lot but I'm welding Stellite to mid carbon castings and it works beautifully. But i agree with the others to use er70s-6 for mild steel to mild steel and it's way cheeper than the 312.