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    snowboard girl's Avatar
    snowboard girl Posts: 3, Reputation: 1
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    #1

    Mar 25, 2009, 02:49 PM
    The three metals that attract a magnet
    What are the three metals that attract a magnet?
    h_leann_b's Avatar
    h_leann_b Posts: 247, Reputation: 35
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    #2

    Mar 25, 2009, 02:54 PM

    They are Iron (Fe), Nickel (Ni), and Cobalt (Co).
    snowboard girl's Avatar
    snowboard girl Posts: 3, Reputation: 1
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    #3

    Mar 25, 2009, 02:58 PM

    Iron, steel, and copper/silver/gold
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    snowboard girl Posts: 3, Reputation: 1
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    #4

    Mar 25, 2009, 02:59 PM
    I'm snowboard girl, I men't cobalt, nickel, and iron.
    Capuchin's Avatar
    Capuchin Posts: 5,255, Reputation: 656
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    #5

    Mar 25, 2009, 03:59 PM

    To be more accurate, these are the three elemental metals which exhibit ferromagnetism at room temperature. There are other alloys (still metals), that also exhibit it at room temperature, and there are several elemental metals (such as gadolinium, and dysprosium), that exhibit ferromagnetism at below room temperature (governed by their curie temperature).
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    Unknown008 Posts: 8,076, Reputation: 723
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    #6

    Mar 26, 2009, 02:12 AM

    I think that tungsten also forms part of the group of ferromagentic metals.
    Capuchin's Avatar
    Capuchin Posts: 5,255, Reputation: 656
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    #7

    Mar 26, 2009, 02:29 AM
    Quote Originally Posted by Unknown008 View Post
    I think that tungsten also forms part of the group of ferromagentic metals.
    I don't believe so, at least not at room temperature.
    sarnian's Avatar
    sarnian Posts: 462, Reputation: 9
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    #8

    Mar 26, 2009, 02:43 AM
    Another strongly magnetic alloy is called alnico - aluminium + nickel + cobalt.

    Ticonal is a further alloy of alnico with traces of iron, copper, and titanium.

    Both are used in strong small magnets that have to be screened for external magnetism (small speakers and motors in televisions and monitors).
    Unknown008's Avatar
    Unknown008 Posts: 8,076, Reputation: 723
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    #9

    Mar 26, 2009, 02:49 AM

    Quote Originally Posted by Capuchin
    I don't believe so, at least not at room temperature.
    Oh, OK. Was just something that a teacher said about ball point pens. The ball was ferromagnetic. Just checked on wikipedia. The ball can be made of steel, tungsten carbide or brass. Thanks for pointing that out!
    Capuchin's Avatar
    Capuchin Posts: 5,255, Reputation: 656
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    #10

    Mar 26, 2009, 04:12 AM
    Quote Originally Posted by Unknown008 View Post
    Oh, ok. Was just something that a teacher said about ball point pens. The ball was ferromagnetic. Just checked on wikipedia. The ball can be made of steel, tungsten carbide or brass. Thanks for pointing that out!
    Tungsten carbide is often made with enough nickel (about 5% if I remember correctly) to make it ferromagnetic. This must be what you were thinking of.
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    Unknown008 Posts: 8,076, Reputation: 723
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    #11

    Apr 3, 2009, 10:51 PM

    Ok, thanks Cap!
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