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  1. pooka00

    how to diffrentiate between grey and ductile cast iron?

    What is 302Cu and is there is spec for the material? I am checking 302SS material and found that for some reason there is 2-3% Cu.
  2. pooka00

    how to diffrentiate between grey and ductile cast iron?

    Make a small fresh cut in the metal. Ductile will smell like calcium carbide (old fassion miners lamp fuel). Grey iron will not have the smell.

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