Steel Question

Discussion in 'Shop Talk' started by Ken Scharabok, Sep 12, 2004.

  1. Ken Scharabok

    Ken Scharabok In Remembrance

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    Can one of you possibly answer this guy's question? Asked of me through one of my eBay listings.

    I also bought something very interesting. It's a piece of what
    appears to be stainless steel. It looks *exactly* like the iron
    bars they put in concrete for reinforcement, but it is
    definitely not iron. It is "cane" length and has been fashioned
    into a walking cane with the top bent over to look exactly like
    a cane. So that means it can be heated and bent. It has the
    following "code" on it which appears to look like "welded
    writing" (if there is such a thing). It says "CR-R19." This
    thing shines like sterling silver, it rings like a bell when you
    tap on it with a piece of metal, and my best file can't put a
    scratch on it. It is definitely "solid" (not "cast). You can
    tell by the cuts at each end. This was cut by a large
    industrial fabricator's cutter (I've seen them in use). The cut
    is clean, but obviously a "cut." The metal inside looks
    identical to the outside. Although I don't know what it is, I
    *do know* that this is not cast. It is also *very heavy* at
    bout 8 pounds. It's the "bell" noise that I find interesting,
    plus also if you hold it in the center and tap on it, not only
    do you hear the bell (albeit muted by holding it), you can feel
    the vibration running up and down the thing.

    Like I said, it has obviously been bent because it has been
    fashioned into a cane, but I cannot bend the full length of it,
    and like I said, my *best* file won't touch it! (The guy wanted
    five bucks, I offered him three and we settled on four bucks).

    What do you think it is? Again, it looks *exactly* like
    concrete reinforcement, has the appearance of polished silver
    (including the cuts on either end), and it is so hard I cannot
    touch it with a file. (I don't have a torch here although I plan
    on getting one. I bought a used, but complete torch without the
    gas lines for 10 bucks).

    My assumption is that you would make a carbon determination
    based on how it reacts to being melted by the torch, water
    quenched, and then hit with a hammer Yes? (As it is right now,
    it *laughs* at a sledge hammer!)
     
  2. agmantoo

    agmantoo agmantoo Supporter

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    rebar is made from other than recycled steel for some applications. From the description I would guess you have a piece of rebar made for a very corrosive use. It brings to mind some of the characteristics of inconel to me.
     

  3. moopups

    moopups In Remembrance

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    Sounds like monel, a nickle rich alloy often used in professional cooling plate steel because of its ability to transfer cooler temps. The machine cut is done by a hydraulic powered shear known as an 'iron worker'. Go into google, click 'images' mode for visual examples of both items.

    Monel responds to a magnet much less than normal mild steel also.
     
  4. unixguy

    unixguy Member

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    Good afternoon;

    If you put it to a grinder, the sparks can tell you something about its makeup.... I don't remember for sure, but I thought long, straight sparks indicated moire carbon, and shorter sparks that "split" indicated more nickel. Does anyone know what I'm talking about, or as I just going crazy?

    Unixguy
     
  5. Ken Scharabok

    Ken Scharabok In Remembrance

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    No, there is a stardard sparks test for the metal. In fact, there is at least one party who sells pieces of known stock for comparison. It is both the color and pattern of sparks which are indicative.

    I've heard back from him that he now thinks it is specialized rebar for use in seawalls.

    Ken Scharabok
     
  6. moopups

    moopups In Remembrance

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    Take the metal to the nearest scrap metal yard and ask the guy who weighs the non ferris metals, he will know the exact answer immediantly just from familiarity.
     
  7. mtman

    mtman Well-Known Member

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    but a file will set off little pices of steel not that hard becouse of the copper content in it