I am looking for advice on material selection for machining brake rotors. For a small buget, i am looking into grey cast iron, or some steels. I've considered 1018 colded drawn, or 1080 steel (i believe its the same as on most motorcyles), I haven even a slight interest in 4130 as a past friend has succesfully used this. As far as the grey cast iron goes, i'm finding it hard to find a specific type to look at.
Any tips or suggestions would be appreciated, I am working on a limited buget and do not wish to consider Al-MMC or any ceramics because of cost. But overall some direction would be appreciated. Thank you.
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