HEAT-RESISTANT SPHEROIDAL GRAPHITE CAST IRON HAVING EXCELLENT CREEP RESISTANCE

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PROBLEM TO BE SOLVED : To improve the high-temperature creep resistance of FCD400 alloy which can be used for a checker-receiving hardware member and the like. SOLUTION : A heat-resistant spheroidal graphite cast iron having excellent creep resistance, contains, in mass%, C : 3.0%-4.3%, Si : 1.5-3.5%, Mn : 1.0% or less, a graphite spheroidizing agent comprising at least one of Mg, misch metal, Ce, and Ca : 0.010-0.15%, P : 0.20% or less, S : 0.050% or less, Ni : 0.50-1.5%, Cu : 0.20-1.0%, and Mo : 0.50-1.5%, with the balance being Fe and inevitable impurities. SELECTED DRAWING : Figure 1 COPYRIGHT : (C)2018, JPO&INPIT