PurposeThe purpose of this paper is to delve into the intricate depths surrounding the development of sustainable supply chains by conceptualizing the elemental aspects of superior performance in sustainable supply chain management (SSCM).Design/methodology/approachThe paper is conceptual in nature and is grounded in the theories of SSCM and knowledge-based view.FindingsThe findings outline the elemental background processes governing the implementation of SSCM practices and superior performance outcomes. The conceptualization suggests that the superior performance of a sustainable supply chain is elementally dependent on the intricate efforts – to enrich the supply chain knowledge base with perspectives on SSCM. Thereby, these intricate efforts are delineated along the arcs of supply chain leadership, supply chain learning orientation, supply chain knowledge management (SCKM) and supply chain knowledge transfer. As such, while an SSCM orientation within the supply chain leadership is helpful in offsetting the inertia among the supply chain members to channelize intricate efforts in SSCM, the SSCM-based supply chain learning orientation further orientates the SSCM efforts of supply chain members toward the excavation of new knowledge in the frame of SSCM. Subsequently, the arcs of SSCM-based SCKM and SSCM-based supply chain knowledge transfer characterize the finer spaces of knowledge excavating actions, essential for enriching the supply chain knowledge base with perspectives on SSCM.Originality/valueThis conceptualization facilitates intriguing theoretical explanations to the linkage between SSCM implementation and superior performance outcomes. Specifically, from the knowledge-based angle, it delineates the root causes governing the superior/inferior nature of SSCM outcomes.