Cast aluminum alloy having high resistance to fatigue and hot creep

摘要

A molded part with high static strength, fatigue and hot creep, particularly at 300 ° C, made from an aluminum alloy of the chemical composition, characterized in that it is expressed in weight percent of: Si: 3 -11% Fe 0.50% Cu: 2.0-5.0% Mn: 0.05 to 0.50% Mg: 0.10 to 0.25% Zn: 0.30% Ni: 0.30% V: from 0.05 to 0.19% Zr: 0.05 to 0.25% Ti: 0.01 to 0.25% possibly element (s) to modify the eutectic characteristics, chosen Sr: 30-500 ppm, Na: 20-100 ppm and Ca: 30 to 120 ppm, or elements to refine the eutectic characteristics, Sb: 0.05 -0.25%; other elements 0.05% each and 0.15% in total, the rest is aluminum.