| 摘要 |
PURPOSE: Ferritic spheroidal graphite cast iron to secure oxidation resistance, heat resistance and intensity is provided to be used as the casted alloy demanding the high temperature characteristics and to be used for an exhaust manifold and turbine housing of a large-output engine. CONSTITUTION: Ferritic spheroidal graphite cast iron is made of C(Carbon) 3.0~3.6wt.%, Si(Silicon) 4.3~5.0wt.%, Mo(Molybdenum) 0.5~1.5wt.%, Ni(Nickel) less than 1.0wt.%, Cu(Copper) less than 0.1wt.%, S(Sulfur) less than 0.03wt.%, P(Phosphorus) less than 0.05wt.%, Mn(Manganese) less than 0.5wt.%, V(Vanadium) less than 0.5~1.5wt.%, residual Fe(Iron), spheroidizing treatment agent less than 0.1wt.% and inevitable impurities. |
