White iron that has been annealed producing a graphite shape that is raggedly spheroidal. (Appears as grape nuts in Jell-O.)
Cast iron containing graphite in the form of nodules or temper carbon, it is cast as white iron and the graphite is precipitated during the subsequent heat treatment.
A cast iron of such composition that it solidifies as white iron, which upon proper heat treatment is converted to a metallic matrix with nodules of temper carbon.
A mixture of iron and carbon, including small amounts of silicon, manganese, phosphorous and sulphur which, after being cast, is converted structurally by heat treatment into primarily a matrix of ferrite containing nodules of temper carbon.
A cast ferrous alloy consisting principally of iron and carbon which is made stronger and ductile by heat treatment (annealing). The heat treatment removes the brittleness normally associated with most cast iron and adds resistance to breakage under heavy impact or distortion.
Iron that can be hammered or bent without breaking.
Iron that may be altered in shape by hammering or by the pressure of rollers without exhibiting fracture or brittleness. The majority of the carbon content is in the form of graphite nodules rather than flakes. See Nodular Iron.
Malleable iron is the oldest member of the family of nodular irons. Like all nodular irons, malleable iron exhibits good ductility. Incorrectly considered by some to be an "old" or "dead" material, malleable iron still has a legitimate place in the design engineer's toolbar.