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Thread: question for metalworkers

  1. #1
    ebf
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    question for metalworkers

    what type of metal/alloy does not spark on a grinder ?

    definitely not aluminium.

    it is pretty hard stuff, machining it on the lathe feels like steel.

    bright silvery colour, like stainless steel

    absolutely zero spark when you touch it to a grinder...
    Viva la Howa ! R.I.P. Toby
    Black rifles matter...

  2. #2
    P38
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    @ebf

    Non ferrous metals and alloys don't spark.

    Check out these sites for Metals that do spark

    https://en.wikipedia.org/wiki/Spark_testing

    The Spark Test and Spark Testing Metals | Scrap Metal Junkie

    Is your metal magnetic?

    Cheers
    Pete

  3. #3
    Almost literate. veitnamcam's Avatar
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    Some high tensile or free machining alloy?
    Where did it come from and what application was it used in?

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    "Hunting and fishing" fucking over licenced firearms owners since ages ago.

  4. #4
    ebf
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    Not magnetic.

    Came in a bucket of metal offcuts

    I've sorted it into brass, alu and the rest.

    Gone thru the "rest" and taken out anything not magnetic.

    What is the technique for identifying non magnetic metals that are not copper, brass or alu ?
    Viva la Howa ! R.I.P. Toby
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  5. #5
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    Phosphor Bronze round bar?

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    Monel metal?
    Boom, cough,cough,cough

  7. #7
    P38
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    It will likely be some form of austenitic stainless steel.

    Are you sure there is no grinding sparks?

    Cheers
    Pete
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  8. #8
    Member Tui4Me's Avatar
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    The fact that it was found along with Ali and brass makes me think it would be a bronze alloy.

    Pretty typical machine shop offcut and the phosphor bronze with its inclusion of tin is more bright silver maybe with a slight pinkish tinge and can be mistaken. Even more so in smaller dia round bars.

    If your sorting it for scrap chuck it in the brass bucket!
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  9. #9
    Almost literate. veitnamcam's Avatar
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    "Hunting and fishing" fucking over licenced firearms owners since ages ago.

  10. #10
    ebf
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    Switched the main workshop lights off. Getting a very short 5mm long orange glow on the grinder wheel, but no sparks that I can see.

    Phos bronze would have a light bronze / copper colour right ? This stuff is silvery.
    Viva la Howa ! R.I.P. Toby
    Black rifles matter...

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    Blaser barrel of cut?
    Boom, cough,cough,cough

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    Adamandium.
    ebf and GravelBen like this.

  13. #13
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    Could literally be one of a hundred different types or grades. Any colour code on an end? Where did it come from and what did they do with their gear? Brass and the like will tend to clog a grinder, I've seen certain types of cast iron with higher alloy amounts that grind like that and appear shiny and silvery. Not a lot of use for much other than casting though...

  14. #14
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    it was my bucket .... it came from an old guy who used to make steam train models , he also had a shit load of phosphor bronze bushings etc etc .... there was quite a bit of odd metal in the bucket , and some of it was effing hard , no numbers stamped on any ...
    glad your making stuff ebf !!!! ...
    ebf likes this.
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    If it looks and feels like aluminium but is a shitload stronger it could be titanium ???? Its cought me out a couple of times.
    SOMETIMES I QUESTION MY SANITY......OCCASIONALLY IT ANSWERS BACK .!

 

 

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