This paper discusses the dependency of the fatigue limit (∆σg,th) of components on the size of stress raisers, such as cracks, defects, and U- or V-notches, under mode I, II, and III loading conditions in Constant Amplitude (CA) fatigue.As summarized in the Atzori-Lazzarin-Meneghetti (ALM) diagram, depending on the size and acuity of the stress raiser and the material fatigue properties, three different fatigue limit regimes can be identified: (i) for short cracks, ∆σg,th approaches the plain fatigue limit ∆σ0, (ii) for long cracks or sharp notches, ∆σg,th is governed by the long crack fatigue propagation threshold ∆Kth,LC, and (iii) for blunt notches, ∆σg,th is governed by the theoretical stress concentration factor Kt.In this work, the ALM diagram is extended to include mode II and III loading conditions by proposing a single design curve for any stress raiser subjected to any loading condition by employing the averaged Strain Energy Density criterion. The averaged SED is a fatigue model based on Neuber's concept of elementary structural volume that considers the strain energy density averaged over a material-dependent characteristic volume as the fatigue driving force. The obtained diagram is validated against experimental data obtained from sharp V-notched steel specimens reported in the literature, showing satisfactory results.