Er312 tig rod mild steel to mild steel?

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Hi guys I'm going to weld a piece for a engine stand and it needs to be strong. Is it ok to use er312 stainless filler on mild steel? Or do I have to use 70-s2? I would like to use the 312 because of its higher yield strength but not sure if it will bond to mild steel real good. This is a custom motor stand my friend is building. He can put a 3/8 ratchet on and turn it 10 full spins and the motor will make 1 revolution or he can put on 1/2 ratchet and turn it about 5 turns and the motor spins once. Thanks!
Reply:Just use good ole 70-s2 for mild. How much weight will this stand hold?
Reply:If you can't make an engine stand "work", as in: serve it's purpose, with regular ol' plain ER70S-2, then anything else is a crutch to mask things or un-necessary show. 1st on WeldingWeb to have a scrolling sig! HTP Invertig 400HTP Invertig 221HTP ProPulse 300HTP ProPulse 200 x2HTP ProPulse 220MTSHTP Inverarc 200TLP HTP Microcut 875SC
Reply:312 is a higher strength rod I would rather use it if its ok to use. And a lot of motors will be going on it. Duramax and powersmokes are some of the heavy ones
Reply:Even though 312 will work, and work well, you should consider more weld reinforcement. Er70 is stronger than the tube anyhow. But if you have tons of 312, go for it. 312 can be used on all steels.Weld like a "WELDOR", not a wel-"DERR" MillerDynasty700DX,Dynasty350DX4ea,Dynasty200DX,Li  ncolnSW200-2ea.,MillerMatic350P,MillerMatic200w/spoolgun,MKCobraMig260,Lincoln SP-170T,PlasmaCam/Hypertherm1250,HFProTig2ea,MigMax1ea.
Reply:312 or 309 or standard ER wire.Torchmate 2x2 CNC with Flashcut CNC controlsHypertherm Powermax45 Esab ET220i Razorweld 195 MigRazorweld 200ac/dc TigTormach 770, Tormach xstechRazorweld, Vipercut/Vipermig, SSC Foot Pedal Dealer
Reply:Ok thanks guys! It's an 1/4 in plate being welded to a 1/8 pipe cut at a 50 degree angle and the plate had mile scale and the tube had rust inside and wasn't beveled. So I told my friend 13$ and he didn't like that so I told Him 10 and he would even go for that so I told him to find a new tig weldor. I was gona put in a root pass and weave for that price and of course clean and bevel the tube. But now I no I can weld steel with 312 super missle rod. Thanks again!
Reply:Why waste the expensive specialty rod on a something where it isn't required and isn't going to make it any stronger? That's just dumb! It's not like it's some odd material you don't what it is. 312 isn't going to make up for poor weld prep on the pieces you're welding. If it's 1/4" why do you want to TIG it? Get some 7018 and be done with it.
Reply:If your joint design is cutting it so close to failure that it needs a super high strength weld deposit, then the joint design is all wrong in the first place.I would reinforce the joint if necessary and use a filler that's actually meant to be used for joining similar mild steel (er70s-2).Last edited by MikeGyver; 01-22-2015 at 04:56 AM.Welding/Fab Pics: www.UtahWeld.com
Reply:Mild steel fused to mild steel.  ER70-S2/6.  Basic.  Ensure the joint fit, form, and function are sound.  "Everything should be made as simple as possible, but not simpler" - A. Einstein"Discovery is to see what everybody else has seen, and to think what nobody else has thought" - Albert Szent-Gyorgyi
Reply:If I understand you correctly, he had a problem paying you $10.00 to weld that up?  If that's the case I would steer clear of that job.  Because if something breaks down the road it's all gonna come back on you.  Just my opinion.
Reply:this is the motor stand. And the shinny pipe on the end thats cut at 50 degrees I was gona weld to the plate then the motor would get bolted on that. Bolted to the motor mount on the engine. It's a new style engine that's has to be mounted by the motor mount. Audi Q7 supercharged
Reply:You need to get away from all these crap jobs, moto.....Quit dealing with deadbeats....Just a couple welders, big hammers, grinders, and torches.Work will free you.Men in dirty jeans built this country, while men in clean suits have destroyed it. Trump/Carson 2016-2024
Reply:It would have been a gravey job
Reply:Originally Posted by motolife313It would have been a gravey job
Reply:He offerd 5 today that's a insult. Lol. I said screw you. If he was a good enough friend and didnt try to srew me over all the time id do it for 5 $. He was gona scrap a newer v10 block once and I told him I'd give him 20$ for it and then 10 minutes later he told me it had no main caps and he would give me my money back. That's a classic russian for you. But I work on cars over there and weld stuff for his dad so that's why I stick around. He's wouldn't give me my money back. I wanted to kick his ***. But made him give me 20 feet of 6-3 wire that I'm using right now.
Reply:I don't turn my welder on for anyone for less than $20. I know it's hard to turn away jobs even for small money but it's not worth the headache to do a job for $10 then to have someone bitch about it. And once you do a job for dirt cheap they will expect it every time.Torchmate 2x2 CNC with Flashcut CNC controlsHypertherm Powermax45 Esab ET220i Razorweld 195 MigRazorweld 200ac/dc TigTormach 770, Tormach xstechRazorweld, Vipercut/Vipermig, SSC Foot Pedal Dealer
Reply:I do little jobs all the time for $5-10 bux....They are good friends, and in reality, that's all the job was worth....Don't get me started on Russians.....We don't let them on our property anymore.Just a couple welders, big hammers, grinders, and torches.Work will free you.Men in dirty jeans built this country, while men in clean suits have destroyed it. Trump/Carson 2016-2024
Reply:Ya that's why I'm proably gona start to have about a 20 $ minimum like your saying
Reply:Originally Posted by AKweldshopI do little jobs all the time for $5-10 bux....They are good friends, and in reality, that's all the job was worth....Don't get me started on Russians.....We don't let them on our property anymore.
Reply:A lot of welding business's around here have a 2 hour minimum.And their shop rate is $70 an hour.Just a couple welders, big hammers, grinders, and torches.Work will free you.Men in dirty jeans built this country, while men in clean suits have destroyed it. Trump/Carson 2016-2024
Reply:Wow that would suck to pay!!
Reply:Originally Posted by motolife313Wow that would suck to pay!!
Reply:Why should someone have to pay 140 $ to weld something like I was gona weld? That's at 30$ job at most
Reply:to the original question, it all goes to what frustrates me daily as a welder.the answer is i dont know. i DO know that 70sX would work, as that is what it was designed for, and that is what any engineer would call out. "will 309 work?, if that works why not 308? what about 316? sil bronz?" i get asked this all the time, and honestly, i dont have a clue so i stick with the basics.70s for ms-ms, 309l for ms-ss, 308l for 304ss-ss, and 316l for 316ss-ss.bosses stuff:trailblazer 325maxstar 200my stuff:sa 200fronius transpocket 180100 amp Lincoln w/f97 f350 DITKevinShop rate here is over $100/hr! Seriously, the little small jobs can be the biggest PIA. A $30 job would be someone bringing in a small part that has a crack in it and just needs a bead to fix the crack.
Reply:Don't take this the wrong way but I don't think you need to be charging for jobs at all.  Iv'e watched your threads and I just don't think your ready to be charging money.  It really seems like you don't really have any clue as to what you are doing (it may come in time).  I just think you are teaching yourself bad practices and really shouldn't be giving advice.  Again just my opinion.
Reply:Originally Posted by 92dlxman70s for ms-ms, 309l for ms-ss, 308l for 304ss-ss, and 316l for 316ss-ss.
Reply:Originally Posted by Murphy's lawDon't take this the wrong way but I don't think you need to be charging for jobs at all.  Iv'e watched your threads and I just don't think your ready to be charging money.  It really seems like you don't really have any clue as to what you are doing (it may come in time).  I just think you are teaching yourself bad practices and really shouldn't be giving advice.  Again just my opinion.
Reply:Typical person, buys welder now I am an expert!!  I can fix anything!  You passed a 3/8 bend test which I believe you welded with aluminum underneath it.  Next time do an open root no backer, back gouge and weld the back.  If your gonna do it do it right.  And that awesome job you did on that radiator support that was laughable.  You need lots and lots of practice before you start charging for work.  Again just my opinion.
Reply:Trust me I know it's your opinion
Reply:Attachment 980201finally got my 312 in today. I welded up my 1.5 wrist pins for my bend tester. This will be the plunger. Seemed like it did handle the heat better then 309! You guys think I should put a weave pass over this or is it strong enough? Worried about puting to much heat in. I think it's enough becuase it's being pressed straight up with no side load but just checking
Reply:Sorry about the 2 pics
Reply:Pretty welds does not mean we are experts. Welding to code is a different ball game. I'm no code welder myself. Passing 1 bend test does not mean we are experts either...  No pun intended moto. Welding up a diesel engine hoist requires strong solid welds. Not pretty welds. Try to weld to code and get good penetration, which your capable of doing. Take your time and charge his *** more than $10Last edited by That Guy There; 01-23-2015 at 06:17 PM.
Reply:Originally Posted by motolife313Attachment 980201finally got my 312 in today. I welded up my 1.5 wrist pins for my bend tester. This will be the plunger. Seemed like it did handle the heat better then 309! You guys think I should put a weave pass over this or is it strong enough? Worried about puting to much heat in. I think it's enough becuase it's being pressed straight up with no side load but just checking
Reply:Ok thanks guys! Shovelon do you think it will hurt the heat treat in the wrist pins enough to have the steel dig into it when pressing and bending?also I heard it makes it stronger if I hit it with the blow gun right after welding is this true?Last edited by motolife313; 01-23-2015 at 10:28 PM.
Reply:If you were worried at all about the heat treat in the wrist pins, I think the welding you've done would have already affected it?
Reply:Do you know the steel type? Is it an air hardening, or oil hardening steel? Personally I would not worry about it. You got this far and it should be much better performing than mild steel anyhow.Weld like a "WELDOR", not a wel-"DERR" MillerDynasty700DX,Dynasty350DX4ea,Dynasty200DX,Li  ncolnSW200-2ea.,MillerMatic350P,MillerMatic200w/spoolgun,MKCobraMig260,Lincoln SP-170T,PlasmaCam/Hypertherm1250,HFProTig2ea,MigMax1ea.
Reply:Shovelon I'm not sure. If I remember correct they came out of a 3306 cat motor.
Reply:you want high strength filler?  Bust out the credit card and order some Hastelloy-W super-alloy.  Age it 1000 hrs @ 1200°F and you're looking at 160 ksi UTS.  As-welded UTS of 120 ksi. 1st on WeldingWeb to have a scrolling sig! HTP Invertig 400HTP Invertig 221HTP ProPulse 300HTP ProPulse 200 x2HTP ProPulse 220MTSHTP Inverarc 200TLP HTP Microcut 875SC
Reply:^^ ....... or score Strata 507T (UTS 128ksi) or Rene 41 filler and you will achieve rocket scientist levels of UTS."Discovery is to see what everybody else has seen, and to think what nobody else has thought" - Albert Szent-Gyorgyi
Reply:Originally Posted by ManoKai^^ ....... or score Strata 507T (UTS 128ksi) or Rene 41 filler and you will achieve rocket scientist levels of UTS.
Reply:312 is 120000 tensile strength. I pay 8 bucks a pound
Reply:Originally Posted by motolife313312 is 120000 tensile strength. I pay 8 bucks a pound
Reply:Shovolen said it was about 120k that's where I got that from. Still about a third stronger then 70s2
Reply:Originally Posted by motolife313Shovolen said it was about 120k that's where I got that from. Still about a third stronger then 70s2
Reply:Are we really worried about the tensile strenth of the filler rod for welding steel??Just a couple welders, big hammers, grinders, and torches.Work will free you.Men in dirty jeans built this country, while men in clean suits have destroyed it. Trump/Carson 2016-2024
Reply:I have a question is it a good idea to even weld on wrist pins.  How do u know when you bend your coupons there not gonna explode. Also why are you so worried about your filler wire, your not working off a WPS.  So really you have no clue what your doing.  I just hope you don't get hurt.
Reply:Originally Posted by AKweldshopAre we really worried about the tensile strenth of the filler rod for welding steel??
Reply:Originally Posted by Murphy's lawI have a question is it a good idea to even weld on wrist pins.  How do u know when you bend your coupons there not gonna explode. Also why are you so worried about your filler wire, your not working off a WPS.  So really you have no clue what your doing.  I just hope you don't get hurt.