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  1. #1
    Join Date
    Feb 2007
    Posts
    3

    Default Carbon Steel to Stainless Steel

    I'm working on a project that requires welding carbon steel bracing to the outside of a stainless steel tank.
    Which will give me the best job for penatration and over all appearance?
    (316L Stainless Steel wire or the ER70 Carbon Steel )

  2. #2
    Join Date
    Sep 2005
    Location
    Salem ,Ohio
    Posts
    3,895

    Cool

    Since you didn't specify the SS specs for the tank i am assuming it is 316. I would use 309 wire to weld it...Bob
    Bob Wright, Grandson of Tee Nee Boat Trailer Founder
    Metal Master Fab Salem, Oh 44460
    Birthplace of the Silver & Deming Drill
    1999 MM185 w/185 Spoolgun,1986 Thunderbolt AC/DC
    Spool Gun conversion. How To Do It. Below.
    http://www.millerwelds.com/resources...php?albumid=48

  3. #3
    Join Date
    Dec 2005
    Location
    Dallas, TX area
    Posts
    267

    Default Be VERY careful.....

    If the vessel you plan to weld on has an ASME certification and you are not certified to weld on vessels, the vessel must be re-tested/certified to ASME specs. Just FYI.
    Triggerman

    Ammonia refrigeration tech
    Trailblazer 302 (yes, it's new)
    Millermatic 180 w/Autoset
    CST-250
    HF-15 High frequency
    XR15 w/Push-Pull Gun
    Victor O/A, DeWalt, North mask


    "A professional knows what to do. A craftsman knows why."

  4. #4
    Join Date
    Feb 2007
    Posts
    3

    Default Carbon to Stainless

    The tank is 48"X48"X26' Non pressure constructed from 1/4" 304 SS.
    Welding the tank is not the problem.
    Welding the bracing to the sides is where we are haveing trouble.
    The Stainless wire does not seem to be penatrating the carbon steel bracing.
    It's just rolling over with what seems to be little pentration.
    Any suggestions??

  5. #5
    Join Date
    Dec 2006
    Location
    Kamloops BC
    Posts
    15

    Default Use 309L wire or stick

    You need to use 309L electrode because of the dissimilar metals. I have done lots of carbon to SS at the pulpmills in the past. This may not be the best way, but I do know that it works and is what I learned during my "A" ticket in BC. 309L has the most carbon "memory" I think that is why it works best with Carbon to SS.

    My 2 cents...hope this helps!


    Steve Senger

  6. #6
    Join Date
    Dec 2006
    Location
    Alaska
    Posts
    732

    Default the higher Alloy

    Allways go to the higher alloyed material. AWS D1.1 chapter 6? I think
    TJ
    TJ______________________________________

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