nodular cast iron

contains Disclosed is a spheroidal cast alloy for cast iron products with plastic deformability, the nodular cast iron alloy as non-ferrous constituents, at least the elements C, Si, Mn, Cu, Mg, S and, as admixtures, one or more elements from the group IIIb of the periodic table, wherein the alloy as an admixture includes at least the element boron, and wherein the Si content is more than 2.4%. There is also proposed a method for producing such cast iron products with plastic deformability, the treatment of the surfaces is performed particularly carefully.