The effect of lubricant formulations on the antiwear performance of high nitrogen alloyed cronidur -30 bearing steel has been evaluated and compared with aerospace standard AISI 440C steel. Base oil without any additives, base lubricant (base oil formulated with additives), and graphene-additivated (GNL) lubricants were taken as lubricant variants in this study. Four-ball testing was conducted on lubricant variants, and the best antiwear performance was obtained with graphene nanolubricant at the optimum concentration. Wear reduction of 44% and a coefficient of friction improvement of 8% were obtained for GNL with optimal concentration compared to the base lubricant. The GNL with optimal concentration is used for further sliding friction testing with Cronidur 30 steel and results compared with AISI440C steel as reference. A comparative evaluation revealed that AISI 440C exhibited significantly improved antifriction performance than CR30 under all lubrication conditions. The application of graphene nanolubricant with effective concentration resulted in a reduction in the coefficient of friction, achieving up to 20% for 440C and 88% for CR30 compared to the base lubricant, highlighting the enhanced tribological effectiveness of GNL, particularly for CR30 material. The improved tribological behavior can be mainly ascribed to the combined influence of graphene's strong adsorption onto the contact surface, its ability to smoothen surface asperities through polishing and mending effects, and the development of a protective tribofilm that reduces direct metal-to-metal contact.