FATIGUE STRENGTH INVESTIGATION OF FOUR TYPE CAST IRONS SPECIMENS
In this paper data about four types cast irons chemical composition, microstructure, static mechanical properties, durability and cyclic fracture toughness is given. Ultimate stress obtained using cylindrical specimens of diameters 8-14 mm with circular notch are
σu = 403-692 MPa. Endurance limit values of notched specimens are σ0 = 85-96 MPa.