Gray cast iron with high performance requirement and production method

The invention relates to gray cast iron meeting high performance requirements. The gray cast iron comprises C, Mn, P, S, Si, Cu, Ni, Cr and Mo. In the mixture of the waste steel and the gray iron foundry returns, the proportion of the waste steel is 50%, the proportion of the gray iron foundry returns is 50%, compared with the prior art, the performance can be improved by about 20%, and the requirements for the special performance of materials and on-site use can be met. The method has the beneficial effects that the chemical component range of the gray cast iron is more accurately controlled; the content of C in gray cast iron is increased, so that yield point and tensile strength are improved, and plasticity and toughness are reduced; the content of the Si element is adjusted, and the elastic limit, the yield point and the tensile strength of the gray cast iron are improved; the Ni element is added, so that good plasticity and toughness can be kept while the strength of the gray cast iron is improved; and b