| 摘要 |
PURPOSE:To obtain a cast steel having superior heat and oxidation resistances as well as the superior castability without adding expensive alloying elements in large quantities by reducing the amounts of impurities such as P and S and adding C, Si and Cr in a well-balanced state. CONSTITUTION:This annealed heat resistant cast steel consists of, by weight, 0.3-2.0% C, 2.5-3.5% Si, <=0.7% Mn, <=0.01% P, <=0.1% S. 5.0-10.0% Cr and the balance Fe. The cast steel has the heat and resistant cast steel as well as castability comparable to that of a conventional heat resistant cast iron. The cast steel is suitable for use as a material for the parts of an exhaust system for an engine for a vehicle from the viewpoint of cost and performance.
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