You're talking a 1600*C melting temperature for iron, so it should be fine.
Thanks for the links hotrodder. I see what you mean now. Better scratch the anodising idea
I see LM6M (12% Si) listed as being widely used and for things like gearbox casings, sumps etc.
I don't know if this includes heads and wheels, but it's not heat treated, so perhaps not.
I'm guessing we won't need to bother with metallic sodium...
Under heat treated alloys I see LM29-TE (chill cast and precipitation treated) listed as used for cylinder blocks and pistons.
I have no idea what will happen to its properties if recast and not treated.
I may be over-thinking this though, and it all doesn't matter. The dies will be pretty chunky so strength may not be an issue.
Thanks for the links hotrodder. I see what you mean now. Better scratch the anodising idea
I see LM6M (12% Si) listed as being widely used and for things like gearbox casings, sumps etc.
I don't know if this includes heads and wheels, but it's not heat treated, so perhaps not.
I'm guessing we won't need to bother with metallic sodium...
Under heat treated alloys I see LM29-TE (chill cast and precipitation treated) listed as used for cylinder blocks and pistons.
I have no idea what will happen to its properties if recast and not treated.
I may be over-thinking this though, and it all doesn't matter. The dies will be pretty chunky so strength may not be an issue.