cast iron Synonyms

iron taconite hard and fast Ferri ductile iron unvarying iron-clad deep-rooted set in stone bulletproof irons unwavering iron ore wrought iron pig iron alloy steel alloy iron unchangeable alloy casting damping off molten iron kind of iron iron with a high carbon content iron with a carbon content heart malleable fittings heart fittings grey cast iron gray cast iron gray cast forged metal ductile cast iron cr-steel cast irons cast iron alloy crude iron smelting works cast in stone unalterable unshakable impervious immutable hard goethite fixed firm established decided concrete changeless certain