High strength gray iron alloy for combustion engines and iron foundries in general

摘要

A high strength gray iron alloy, where - The carbon equivalent (EC) is defined in the range of 3.6% - 4.0% by weight, maintaining the C content of 2.8% - 3, 2%. - The Cr content is defined at a maximum 0.4% and, when associated with Mo, the defined range% Cr +% Mo = 0.65%. - Cu and Sn are associated according to the following equation 0.010% = [% of Cu / 10 +% of Sn] = 0.021%. - The content of Mn is defined between 0.4% and 0.5%, and associated with the% of S, the contents of S and Mn are defined at the following intervals calculated for the ratio [% of Mn /% of S ]: - Mn = 0.40% Range: Mn / S = 3.3 to 3.9 - Mn = 0.47% Range: Mn / S = 4.0 to 5.0 - Mn = 0.50% Range: Mn / S = 4.9 to 6.0 - The Si content is defined in the range of 2.0% to 2.40%. - The content of "P" is defined in the range of:% of P = 0.10%. - and the rest corresponding to iron and unavoidable impurities.