The sliding wear behaviour of nickel-based Colmonoy-6 and Anval B60 hardfacing alloys were investigated at room temperature under contact stresses of 1 and 3.5 MPa for sliding distances upto 9 km. Commercial, Colmonoy 6 bare rods were deposited by gas tungsten arc welding (GTAW) and Anval B60 powder by plasma transferred arc welding (PTAW) processes respectively on stainless steel substrate. The hardness measurements across the interface revealed that, over 2.5 mm from the interface, the hardness along the deposits, were found to be 606 and 625 HV for Anval B60 and Colmonoy 6 respectively for single pass. XRD studies showed the presence of borides and carbides along with γ-nickel matrix for both deposits. Pin-on-disc wear tests showed the weight loss gradually increased with increase in sliding distance but steeply with increase in contact stress in both cases. Increase in coefficient of friction with increase in contact stress was also observed on both the deposits. Copyright © 2004 by Society for Advancement of Heat Treatment & Surface Engineering (SAHTSE).