AUSTENITIC SPHEROIDAL GRAPHITE CAST IRON Russian patent published in 2016 - IPC C22C37/04 

FIELD: metallurgy.

SUBSTANCE: invention relates to metallurgy, namely, to austenitic spheroidal graphite cast irons for production of parts, intended for operation in corrosive medium at temperature from -60 to +90 °C, in particular for making of oil production submersible centrifugal pumps working members. Austenite spheroidal graphite cast iron contains, wt%: carbon 2.2-3.0; silicon 2.4-3.2, manganese 3.0-4.0, copper 6.5-7.5, nickel 9.4-11.0, magnesium 0.03-0.05, calcium 0.03-0.05, cerium 0.01-0.03, tungsten 0.1-0.3, molybdenum 0.1-0.3, iron is rest.

EFFECT: technical result is higher strength of austenitic cast iron, which is used for making articles, operating in corrosive medium at temperatures from -60 to +90°C, and cast iron castings higher machinability during surface machining.

1 cl, 2 tbl