<p>Utilization of steel slag as a complementary material to clinker is gaining traction as an eco-friendly alternative to the CO₂ emissions associated with ordinary Portland cement (OPC). In the current study, steel slag at different levels (5 wt%, 10 wt%, 15 wt%, and 20 wt%) was used to replace clinker for cement formulation. XRF was used to obtain the chemical composition of raw materials utilized in making upcycled steel slag cement as well the cements with various steel slag compositions. A Blaine test was employed to determine the specific surface area of cement samples. Cement paste from the upcycled steel slag cement was tested for consistency, soundness as well as setting times and compared to normal pozzolanic cement. The compressive strength and flexural strength at 2, 7 and 28&#xa0;days for prisms made from the upcycled steel slag cement were evaluated. The results showed that increase in steel slag compositions led to increasing SiO₂ compositions. Al₂O₃, Fe₂O₃ and CaO compositions however, reduced with increasing steel slag compositions in the cement. The cements’ fineness and setting times generally increased with increasing steel slag loading, which was dissimilar to their standard consistency results. The prisms’ results indicated that the compressive strength at curing days 2, 7 and 28, respectively were in range with those of the normal pozzolanic CEM IV cement (13.3&#xa0;MPa, 22.5&#xa0;MPa and 35.6&#xa0;MPa). These results showed steel slag as a promising alternative to clinker for the formulation of eco-friendly cement.</p>