F00001 - F99999 (Iron, including Ductile Irons and Cast Irons)
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F10001 - F15501 (Cast Iron, Gray)
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F20000 - F22400 (Cast Iron, Malleable)
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F30000 - F36200 (Cast Iron, Ductile (Nodular))
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F41000 - F41007 (Cast Iron, Gray, Austenitic)
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F43000 - F43030 (Cast Iron, Ductile (Nodular), Austenitic)
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F45000 - F45009 (Cast Iron, White)
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F450010 - F47000
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F47001 - F47006 (Cast Iron, Corrosion)