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Brass fitting welded to a 304ss?

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发表于 2021-9-1 00:05:38 | 显示全部楼层 |阅读模式
I want to weld a brass fitting to a piece of 304ss pipeCan I use my mig for this with 304L wireLow heat? high heat? wire speed? what should i watch for or setup? not familiar with brass at all.Last edited by dbluegoat; 11-06-2007 at 10:15 AM.Millermatic 180
Reply:Not gonna work...  Time to look at silver soldering.
Reply:either a soldering or brazing application. can you put self tapping screws into it at all. --Gol'
Reply:Welding is when both pieces of metal melt together to form the joint.So, if you melt the brass, then the stainless steel isn't melted.If you melt the stainless steel, then the brass has mostly vaporized the zinc in it.And besides,  just what witch's brew of intermetallic blending would mixing molten brass and stainless steel make?You can braze (silver solder) many dissimilar metals together.note:  there are ways to 'weld' dissimilar metals together.  Friction-stir welding or explosive welding are two ways to do that.
Reply:Silver solder with the highest silver content rods, it used to be simple you just used "Easy-Flo" but now it is sold by the silver percentage, I find a brand name easier to remember than a percentage number, but then I sometimes have difficulty remembering ten minutes ago, must be the age.
Reply:At Home Depot, or your local welding shop, they have a nickel brazing rod. I get them at HD, they are made by Bernzomatic. They have a BLUE flux on them, not the white flux. Oxy/ acetaline, a small tip, and braze away. Very strong bond with this rod, and it is made for SS to other materials.And then, after so much work...... you have it in your hand, and you look over to your side...... and the runner has run off. Leaving you holding the prize, wondering when the runner will return.
Reply:As stated brazing is the only way to go, depending on exactly how thick the pieces are you might be able to use a mapp/air torch that only costs about $40 to braze it unless you actually have O/A setup.
Reply:Find a braze alloy containing nominally 45% silver, usually sold as "Easy-Flo 45".  That's a common designation from a specific manufacturer, but the AWS classification is "BAg-5".  Use with white flux and O/A set with a slightly reducing flame.  People will tell you over and over that you need to use the black flux, but remember, that is for high temp applications involving stainless, and with 45% silver you aren't going to need it, stick with the more common white flux.I r 2 a perfessional
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