Annealing cast iron bar stock

Home enthusiasts discuss their Foundry & Casting work.

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Re: Annealing cast iron bar stock

Post by boaterri » Fri Aug 05, 2016 5:05 pm

Looks like good stuff, unfortunately, their smallest quantity is many life times of material for any of us home foundrymen.


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Re: Annealing cast iron bar stock

Post by Bastelmike » Thu Sep 01, 2016 1:22 pm


they have this product: ... rizers.pdf

Ist available in a paper bag, 40 kg. Enough for several lifetimes in a home foundry, I guess.


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Re: Annealing cast iron bar stock

Post by Harold_V » Thu Sep 01, 2016 3:07 pm

Thanks for the link, Bastelmike. I was surprised to read that the ratios vary. Don't have a clue which one I have, but it's the one used by a foundry in Utah, where ductile iron is made from scrap steel.

There is much to know in regards to the chemistry of cast iron. Could prove to be a lifetime study!

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Re: Annealing cast iron bar stock

Post by jpfalt » Thu Sep 01, 2016 9:17 pm

The standard recipe for malleable iron is to pour gray cast iron into a steel mold to get white cast iron and then anneal. When you anneal white cast iron, the carbon precipitates in globs, rather than sheets and flakes. You won't be able to get back to gray cast iron unless you remelt the iron and pour into a sand or other refractory mold.

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