iron As a command 20 categories below iron Narrow by alloy 6 cast-iron 4 pig-iron 4 alloy-iron 2 wrought-iron 1 alloy-iron 2cast-iron 4pig-iron 4wrought-iron 1alpha-ironbasic-ironbeta-ironcinder-pigdelta-irongalvanized-irongamma-ironingot-ironmine-pigni-hardni-resistpot-metalscrap-ironspiegeleisenstructural-ironswedish-iron