Gray Iron vs Ductile Iron:
Gray iron is relatively easy to melt and cast successfully, if you pay close attention to details.
I have researched methods for making ductile iron, and I know how to do it (very carefully with special equipment).
I believe I could easily make ductile iron if someone would sell me the nickel-mag additive (Nickel-Mag4).
I have searched the entire US, and nobody will sell a small quantity of that material.
Nickel-mag has to be the correct mix of materials, else you will get a violent explosion, or start a fire that will burn through a crucible and down into the ground. You actually make ductile iron in a lined ladle, not in a crucible.
If anyone has any spare Nickel-Mag4 laying around, please sent it to me.
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