HIGH-STRENGTH CAST IRON FOR HEAT-TREATED CAST CASE PARTS Russian patent published in 2017 - IPC C22C37/10 

FIELD: metallurgy.

SUBSTANCE: invention refers to metallurgy, namely to high-strength structural cast iron for heat-treated cast case parts operating under complex strain and showing enhanced wear and fracture resistance, yield strength and antifriction properties. High-strength cast iron for heat-treated cast case parts contains, wt %: carbon 2.2-3.1; silicon 1.5-2.3; manganese 0.4-0.7; copper 0.8-2.5; nickel 0.7-2.1; molybdenum 0.2-0.35; chrome 0.1-0.3; magnesium 0.03-0.05; cerium 0.01-0.02; zirconium 0.05-0.35; barium 0.01-0.03; boron 0.01-0.03; the rest is iron.

EFFECT: enhanced wear and fracture resistance, yield strength and antifriction properties of cast iron.

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