30 - Monotonic and Cyclic Design Data for Ductile Iron Castings

Abstract:

Data on the low and high cycle fatigue response as well as monotonic (non-cyclic) and cyclic flow properties are required by design engineers for the proper design of many components. Although these properties data are available in SAE standard J1099, June 1998, "Technical Report on Fatigue Properties" for many competing materials, no readily available source exists for such information on ductilelnodular cast iron. Typical tensile and compression properties of ductile iron are well known, but the (1) monotonic and cyclic strength coefficients, (2) strain and stress versus fatigue life (reversal) constants, and (3) the variation in elastic modulus after repetitive cycling have not been published in the open literature or handbooks.