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old rusty as heck millling machine vice - gray or ductile iron?

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  • old rusty as heck millling machine vice - gray or ductile iron?

    I want to smash it up and melt it

    Please tell me it's gray iron.

  • #2
    how will we know if we can't see itLOL although it sounds like grey iron when you listen to the computer Alistair?
    Please excuse my typing as I have a form of parkinsons disease

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    • #3
      I can't hear anything but it smells pretty rusty.
      Mike

      My Dad always said, "If you want people to do things for you on the farm, you have to buy a machine they can sit on that does most of the work."

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      • #4
        Originally posted by Chrisnj View Post
        Please tell me it's gray iron.
        OK it's grey iron.

        Steve

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        • #5
          too hard to do ,its tough stuff if for a mill, just pull off steel parts and scrap rest. 9-10 cents a # here in USA.i always save the really good steel instead of scrapping it, you can eventually make something of it, and it wont loose value even if it rusts.
          FORD BEATING JAP CRAP SINCE 1941!! CAROLYN JONES(1930-1983 actress)may this lady never be forgotten.

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          • #6
            I would suggest that you take a cut with an end mill and compare the chips to those from a known gray iron. With the same feed,speed and depth of cut, ductile iron will show a much longer, "stringier" chip.

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            • #7
              You plan to break it anyway, so if it's grey, it will look dark grey, because of the flake microstructure. Ductile will have a much lighter color.

              Also, grey is brittle so a failure point will show no deformation, but the ductile iron fracture will show that it deformed before breaking.

              Zero.

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              • #8
                Originally posted by + or - Zero View Post
                Also, grey is brittle so a failure point will show no deformation, but the ductile iron fracture will show that it deformed before breaking.
                Grey damps vibration really well, but is brittle. Ductile is about twice as strong as grey, but doesn't damp. Good quality vises (Kurt, Yuasa, Bridgeport, ...) are made from ductile. If it's an Asian or Indian vise, it's whatever they could shove into the furnace
                "Twenty years from now you will be more disappointed by the things that you didn't do than by the ones you did."

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