What E71 T1 fcaw wire to use

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I got a great deal on a new/used Miller suitcase 12VS! It is a great addition to my Big Blue 300 diesel welder. I'm needing to get current info about specific brands and type of flux core(dual shield) wire is most suitable for structural welding and general fabrication. I know I want an E71 T1 wire, what are the numbers after that? 16 years ago I worked on bridges and mining equipment for Caterpillar & Decator. I,ve forgotten the specifics on the wire we used.bcwldr80MILLER BIG BLUE 300MILLER 175Miller suitcase 12 vs
Reply:I run a lot of E81T1 but don't have much experience with the 70 series wire. All our work is on High Strength Low Allow structural steel (ASTM A572 Grade 65).Is this what you're looking for:AWS D1.1 Certified SMAW 3G Unlimited, Open Root                             FCAW-G 3G Unlimited, w/BackerCellular Tower Reinforcement Welding on the frozen tundra of the greater Mid-West
Reply:Welding Swede, I'm looking at doing general fabrication on A36 steel. I will be doing a repair on a D6 Dozer this spring. I'm hoping that a 7o series wire will be enough for that too. I'll have to break out the air arc for that one. Thanks for the reply, Barrybcwldr80MILLER BIG BLUE 300MILLER 175Miller suitcase 12 vs
Reply:Originally Posted by bcwldr80Welding Swede, I'm looking at doing general fabrication on A36 steel. I will be doing a repair on a D6 Dozer this spring. I'm hoping that a 7o series wire will be enough for that too. I'll have to break out the air arc for that one. Thanks for the reply, Barry
Reply:I think I will try 1/16" because thats what I used in the shops I've worked at many years ago. You are right about 1/16" being to hot for uphill on anything less than 3/8" thick steel. I should go with .052 for that reason alone. Are you welding mostly 1/4"? I do mostly flat position welding small projects so I may be OK.bcwldr80MILLER BIG BLUE 300MILLER 175Miller suitcase 12 vs
Reply:I mostly weld stiffeners to cellular telephone tower bases. The stiffeners are 1.25" thick and the tower wall thickness is around .410". I run a 2 pass continuous fillet weld up both sides of the 6' stiffener and then there's a CJP base weld to tie the stiffener to the tower base plate. Blowing through the tower wall isn't much of a possibility unless I did something really stupid. No, 1/16" is just to much for my weave cover on the vertical up fillet. I like it to look its best and usually I have a 3/8" weld size spec on the print so I don't like to exceed that by too much. I can run the 1/16" but I my weave has to be so fast that it feels rushed. Hard to explain.Here's a few pics to explain from a couple of different jobs all using .052":AWS D1.1 Certified SMAW 3G Unlimited, Open Root                             FCAW-G 3G Unlimited, w/BackerCellular Tower Reinforcement Welding on the frozen tundra of the greater Mid-West
Reply:nice looking welds there! That looks like you have a good eye for quality work. Are you a contract welder? I work as a maintenance welder now. The weld size is determined by the thickness of the steel you are welding. In your case the 1/2" tower plate ( it being the thinnest piece) will be the size of weld you should be putting in that structure. I would question any draftsman who put a 3/8" weld spec on a 1/2" plate. Yes 1/16" will be a little faster to make a larger bead. Thats why it is used on thicker metals, it carries more amperage to penetrate thicker steels. You can get used to faster welding with practice. In flat position a 3/8" fillet weld using 1/16" has a stringer with 2 cover passes. 1/2", stringer with 3 passes using 3/32". Thats welding with 330 amps & 550 amps. Do you have a base plate that is 1 1/4"? Do you do your own magnaflux testing? I live in the great state of Utah currently, not much snow here. Can you send some of that our way?bcwldr80MILLER BIG BLUE 300MILLER 175Miller suitcase 12 vs
Reply:Originally Posted by Welding_SwedeI mostly weld stiffeners to cellular telephone tower bases. The stiffeners are 1.25" thick and the tower wall thickness is around .410". I run a 2 pass continuous fillet weld up both sides of the 6' stiffener and then there's a CJP base weld to tie the stiffener to the tower base plate. Blowing through the tower wall isn't much of a possibility unless I did something really stupid. No, 1/16" is just to much for my weave cover on the vertical up fillet. I like it to look its best and usually I have a 3/8" weld size spec on the print so I don't like to exceed that by too much. I can run the 1/16" but I my weave has to be so fast that it feels rushed. Hard to explain.Here's a few pics to explain from a couple of different jobs all using .052":
Reply:What ever dual shield you go with, remember to store it in a dry warm place! Or you run the risk of getting worm tracks. http://www.esabna.com/us/en/newsletters/worm-tracks.cfm Attached ImagesDon’t pay any attention to meI’m just a hobbyist!CarlDynasty 300V350-Pro w/pulseSG Spool gun1937 IdealArc-300PowerArc 200ST3 SA-200sVantage 400
Reply:I think you will be a lot happier with .045 to start with.
Reply:Originally Posted by bcwldr80nice looking welds there! That looks like you have a good eye for quality work. Are you a contract welder? I work as a maintenance welder now. The weld size is determined by the thickness of the steel you are welding. In your case the 1/2" tower plate ( it being the thinnest piece) will be the size of weld you should be putting in that structure. I would question any draftsman who put a 3/8" weld spec on a 1/2" plate. Yes 1/16" will be a little faster to make a larger bead. Thats why it is used on thicker metals, it carries more amperage to penetrate thicker steels. You can get used to faster welding with practice. In flat position a 3/8" fillet weld using 1/16" has a stringer with 2 cover passes. 1/2", stringer with 3 passes using 3/32". Thats welding with 330 amps & 550 amps. Do you have a base plate that is 1 1/4"? Do you do your own magnaflux testing? I live in the great state of Utah currently, not much snow here. Can you send some of that our way?
Reply:Originally Posted by Welding_SwedeThe only way to get into position for our base welds is to lay down in the snow and ice at the base of the pole and a lot of time the joint is tightly restricted by anchor bolts. Our big problem is the wind. About half the time I put up tarps to block the wind. It has been extremely windy out in Illinois and Indiana where these jobs are located.
Reply:close. thought I was giving advice to the OP that was going to weld on the D6. seemed like .045 would be more manageable for that. plenty familiar with the big Dual Shield as used .072 in the shop until it become unavailable and had to go back to 1/16". Sure a big difference how fast .072 will fill a 100% bevel on 2" compared to 1/16".
Reply:Today I decided (with some help from the Swede/Lars66 and this forum)to order pinnacle premier 712 .045 because I do more small fab jobs. I might be going to a 1/16" for a repair on the D6. Depends on what is needing done. 8018 maybe just what I need if it is a small repair. Will need to become familiar again with the fluxcore wire before I decide what to purchase for that job. Thanks for the input on the sizes you are using and for what thickness of materials. That really helps. I'm just a small time back yard welder with a hobby of welding and i like it that way.Last edited by bcwldr80; 03-04-2014 at 08:31 PM.bcwldr80MILLER BIG BLUE 300MILLER 175Miller suitcase 12 vs
Reply:I have a project to make a propane grill/smoker out of a 20"x37"x1/8" tank. Will be using .035 mig wire. I have some stainless tubes for the burners. They are from a natural gas furnace taken out of service recently. Anyone do stainless welding with wire? I'm interested to know your experience with 16 gauge stainless and .035 wire.bcwldr80MILLER BIG BLUE 300MILLER 175Miller suitcase 12 vs
Reply:Originally Posted by lars66close. thought I was giving advice to the OP that was going to weld on the D6. seemed like .045 would be more manageable for that. plenty familiar with the big Dual Shield as used .072 in the shop until it become unavailable and had to go back to 1/16". Sure a big difference how fast .072 will fill a 100% bevel on 2" compared to 1/16".
Reply:Originally Posted by Welding_SwedeMy bad. It is his thread isn't it? Finnish? Norwegian?bcwldr80:Good luck with the grill project. I want to do one of those if I ever clear out my backlog of projects and promises. I've run a fair amount of SS MIG but it was always on 14ga. or thicker and it was .035" SS wire and some kind of tri-mix shielding gas. I remember it was kind of a pain to get it initially dialed in but once it was it ran great. I believe we used a pulse mode but I can't recall. Sounds like a good way to run the 16ga. though if your machine can do it. If you're asking about running stainless with an ER70Sx carbon steel wire I'm sure it will work but not sure how well it will last. Never tried it. Post pics of the project when you get it done.Regards,Eric.
Reply:Lars66, I've never posted project pictures but I wiil do my best to post as built pics.bcwldr80MILLER BIG BLUE 300MILLER 175Miller suitcase 12 vs