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  1. #1
    Join Date
    Sep 2021
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    Michigan
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    Default Affix Brass to Weathering Steel?

    If I attach a piece of sheet brass to a larger piece of weathering steel, will I have galvanic corrosion problems between the two metals? Does the joining method matter? I could use cold fastening (bolts, probably also brass) or silver solder.

  2. #2
    Join Date
    Oct 2004
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    Southern Highlands NSW
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    1,894

    Default

    By weathering, do you mean there is already rust there?
    Many old machines have brass nameplates on corroded steel parts like electric motor housings, seem to hold up OK if not beautifully.

  3. #3
    Join Date
    Sep 2021
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    Michigan
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    Default

    Quote Originally Posted by nadroj View Post
    By weathering, do you mean there is already rust there?
    Many old machines have brass nameplates on corroded steel parts like electric motor housings, seem to hold up OK if not beautifully.
    I mean Cor-ten steel. It forms a protective oxide layer that stops ordinary rusting. Some claim it also insulates so galvanic corrosion isn't an issue, but the oxide layers takes months/years to form. I should have noted that this piece will live outdoors. Good point about brass nameplates.

  4. #4
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    Southern Highlands NSW
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    Default

    I've only noticed what looks like stainless steel info plates on Corten containers, but brass might also be used.
    You could with some thin rubber gasket etc provide a separation between the metals, that needn't be obvious?

  5. #5
    Join Date
    Jan 2004
    Location
    Mackay North Qld
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    6,446

    Default

    Quote Originally Posted by SixDegrees View Post
    If I attach a piece of sheet brass to a larger piece of weathering steel, will I have galvanic corrosion problems between the two metals? Does the joining method matter? I could use cold fastening (bolts, probably also brass) or silver solder.
    First up,welcome to the MetalWork Forums.
    You joined an Australian based MetalWork Forum so mainly we talk in terms of products and vendors known local to us.
    A good bunch of fellas but we talk different ok? Solder is pronounced by us with an L , Solder not Sodder.

    What A brass Plaque attached to corten steel
    Why To avoid corrosion
    How Possibily, silver solder or alternately fasteners
    When How long does this have to last?- where it will live is a important factor
    Where The environment- is it a salt mine or submerged in an acid?
    Who well obviously you ,but do you have the tools and equipment you may need.


    The information base needs to be a little bit broader as one facet may affect another.

    You will find many like minded folk here with same interests as you.

    If you explore our pages you will find bits and pieces of interesting things all over the place.

    Go to the FORUM box at top LH corner and click on it.

    A drop down menu appears and you can select Forum Home at the top of the drop down menu list. Scan down the pages to look at what we have.

    Please make sure read the Terms of Use -our Rules - pretty standard for many forums these days.By joining the forum its automatic that they apply to you as a member

    Normally the soft ware works so you can't post pics or links until 10 posts are made ( or such links and pics are cleared by a mod)

    Its anti spam thing.

    There are all sorts of forums that might be parallel with your interests, found as described above.

    If any questions contact me via PM and I'll try to help you.

    Grahame

  6. #6
    Join Date
    Apr 2007
    Location
    Newcastle
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    229

    Default

    To be honest I think you have a very low chance of getting an answer to something as specialised as this on any forum. And even if someone gave me an answer I probably wouldn't trust it. I would talk to the manufacturer's technical support. They will be all over the chemistry of the surface layer.

  7. #7
    Join Date
    Sep 2008
    Location
    Riddells Creek, Vic.
    Posts
    831

    Default

    Brass fasteners would be the best choice, see chart.

    compatability-chart.jpg

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