IRON BASE SINTERED ALLOY FOR VALVE SEAT

摘要

Iron-base sintered alloy for the valve seats of internal combustion engines is an iron-base alloy powder containing, by weight, 6 - 20 % chromium, less than 2.0% nickel, and carbon 0.2 - 1.5 %, together with at least two additives selected from among 0.3 - 1.5 % manganese, 0.2 - 1.5 % sulfur, 0.5 - 8 % molybdenum, and 0.5 - 2-5 % silicon, and molded to a sintered density of 6.2 - 6.8 g/cm3.