Super Coupon

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In the special notes on the specs. of pipe welding tests what is a "Super coupon" ? http://uatravelers.com/UA-WeldCerts.htmlAlso what is the f-number? The position?Last edited by Capozzoli; 01-13-2012 at 07:58 PM.Welding everything, from the crack of dawn to a broken heart.
Reply:The "super coupon" is the specific size of welding plate (coupon) that qualifies one for unlimited thickness per AWS D1.1 4.23.2F numbers represent the different classifications for electrode types.  See table 4.13 in AWS D1.1 for more information./Note: 6010 and 6011 are F3 and 7018 is F4
Reply:Thanks fegenbush, I really should start studying that code book. Its a little confusing looking at the UA chart that I posted because it has a line that specifies filler material then there is also a line that specifies the F-number.  If I test and pass the UA 61 and it is considered a super coupon it qualifies me to weld that 1" pipe at any thickness? That chart is confusing to me. Maximum qualified weld deposit thickness is confusing to me too. Sorry for questioning something that I have the info on. Gotta remember- navigation, navigation, navigation.Welding everything, from the crack of dawn to a broken heart.
Reply:A super coupon has nothing to do with a plate test.  A super coupon is 2 3/4" OD, .625" wall thickness pipe coupon.  The intent of the super coupon is qualify you to run a root and hot pass with one F number or process, and make a half inch deposit with another F number or process, which qualifies you to unlimited thickness under ASME code (typically qualified to .250 on the first F number/process, as you will deposit 1/8" of metal and are qualified for 2T).  It also qualifies you weld down to 1" OD.  So, UA-63 is a pretty typical component of a hire-in test.  Super coupon, root and hot with ER70S-2, fill and cap with E7018 in the 6G position.  This qualifies you for .250 deposit thickness with GTAW without backing using an F6 electrode, unlimited thickness SMAW with F number 4 and lower electrodes with backing, all positions, minimum OD of 1" for groove welds under ASME code.
Reply:Thanks a lot supe, Now I have to read your post about four or six times. Sorry but Im still a little confused on the F-number though. In the UA chart of tests it has a line that specifies filler material. Why the additional F-number? Is one line superfluous?Welding everything, from the crack of dawn to a broken heart.
Reply:Hi Cap,I believe the  number is what you end up being qualified for once you complete the test.  You take the test do it with the electrode / filler metal specified on the far right, but you're qualified for each of the filler metals identified in the F column.  Here's the test sheet for UA61.  It indicates you test on 2.75" OD and you're qualified down to 1".  Just like the filler is what you test at and you're qual'd for all the rods / wire under F.https://uanet.org/pdf/cert/welder/tests/ua61.pdfThis is the kind of thing that all hobby welders like me ought to see so they don't get too big for their britches (I know your not a hobby guy btw).  Unbelievably complicated and I wish you luck...  You can locate any of those tests just by substituting the test number in the linky thing.  Good luck on your studying.
Reply:Thanks Rod, and yeah I like posting these questions even though I could probably search the answers other ways. This way it is up here for all to see. Plus I am no doubt getting better answers. It is confusing but the more I look at it and get explanations from you guys the clearer it is becoming. I do have to start studying, haven't much yet. I am cleaning up from a terrible chit storm at work. Hoping to get an even keel again so I can get home earlier and start studying. Thanks for finding those test sheets for me. Guess Im not that good a searching for things. Well, unless it is 19 year olds in bikinis, or out of them. So much welding, so little time.Welding everything, from the crack of dawn to a broken heart.
Reply:Capozzoli - under ASME code, F numbers are assigned to various electrode classifications based essentially on their usability characteristics (for example, F3 is 6010's, 6011's, etc, while F4 is 7018, etc).The gist of it is that various F number groupings essentially weld the same, and on this basis QW-433 in ASME IX is a table that shows what the welder is qualified for based on F number and backing.  It's not something most welders will ever look at, but welding engineers/management will typically create welder qualification test templates based on the table requirements and other essential variables to qualify a welder for the broadest range of materials possible.