Ductile cast iron material, composition containing same and production method of bearing saddle and ductile cast iron

The invention provides a ductile cast iron material, a composition containing the same and a production method of a bearing saddle and ductile cast iron. The ductile cast iron material comprises the following components in percentage by weight: 3.35-3.81% of C, 2.35-2.75% of Si, 0.35-0.85% of Mn, 0.30-0.56% of Cu, P not more than 0.05%, S not more than 0.05%, and the balance of iron and inevitable impurities. The yield strength, the tensile strength and the elongation of the ductile cast iron produced by the ductile cast iron material with the components can reach standard requirements of the bearing saddle on the tensile strength, the yield strength and the elongation, so that the ductile cast iron can be used for producing the bearing saddle.