when things get rusty

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  • AlabamaBoy

    Senior Member
    American English
    You could say "Rust is beginning to appear on my new knife" but we tend to make "rust" more of an object than a subject: "My new knife is beginning to show a little rust."
     

    Packard

    Senior Member
    USA, English
    If the rust is appearing from under a painted finish, then "coming through" would work.
     

    Packard

    Senior Member
    USA, English
    Rust is a reaction to the air and moisture. Technically it is "iron oxide". And in the metals industry it is referred to as "oxidation". Many metals oxidize. Zinc and aluminum form a white powder when they oxidize. Iron forms rust. I think the correct metalurgical term is "form".

    When we have parts tested in an accelerated test chamber (ASTM B117) we get reports that say "...96 hours to red rust..."

    See: http://en.wikipedia.org/wiki/Salt_spray_test

    The salt spray test is a standardized test method used to check corrosion resistance of coated samples.
     
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