PURPOSE: To obtain the title nickel-chromium cast iron sintered material having excellent wear resistance, seizure resistance and slipping resistance by forming it with the compsn. contg. prescribed content of specific 10 kinds of each metallic element such as C, Cr and Si, and depositing graphite into its structure by graphitizing heat treatment.

CONSTITUTION: The above nickel-chromium cast iron sintered material is formed with the compsn. contg., by weight, 1.0 to 1.9% C, 2.0 to 4.5% Cr, 1.5 to 4.0% Si, 0.4 to 5.0% Mo, 0.5 to 1.5% Mn, ≤13% Ni, ≤0.1% P, 0.5 to 4.0% Cu, ≤0.08 S, 4.0 to 15.0% Ni+Cu and the balance Fe. The nickel-chromium cast iron powder is usually manufactured by refining the molten metal of nickel-chromium cast iron contg. expected components, pulverizing it by a gas atomizing method, etc., and subjecting the powder to rapid solidifying. The above cast iron powder is then subjected to compacting into the desired shape to obtain the objective nickel-chromium cast iron sintered material in which graphite is deposited out. In the sintered material, fine graphite is uniformly dispersed and deposited by graphitizing heat treatment and seizure resistance and slipping resistance are improved.