Cast Iron to steel.

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  • the forge
    Member
    • Feb 2010
    • 60

    Cast Iron to steel.

    I am making a candle holder out of 1" square, hot rolled steel bars and going to use square, cast iron post caps as the drip cups. What rod would you suggest to TIG weld these two together? The bar is solid and the caps are about 1/16" thick at the welding area. I realize that I will need to preheat the bars before welding.
    Thanks,
    Joe
  • Hotfoot
    Senior Member
    • Apr 2005
    • 6732

    #2
    1/16" sounds mighty thin for Cast Iron...is that thickness correct? If they slip on pretty nicely< I would just epoxy them on. I've doe that with cat-to steel ornamental fence parts that fit fine, and just needed to be stuck. I've also MIG'ed cast to steel...its not a weld...more kike a hot glue solution...Hot Glue may be stronger!
    "Good Enough Never Is"

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    • urch55
      Senior Member
      • May 2009
      • 1920

      #3
      What about using brass as filler.? Just like brazing cast to steel.
      I have had good results brazing cast.
      sigpic

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      • yorkiepap
        Senior Member
        • Nov 2007
        • 501

        #4
        Hey Joe,
        Your application sounds like a perfect candidate for using silver-solder with O/A. Sil-sol is quite strong & very easy to use with a little practice.

        Denny
        Complete weld/mach./fab shop
        Mobile unit

        "A man's word is his honor...without honor, there is nothing."

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