Owing　to　excellent　recentering　capability　and　satisfactory　damping　capacity,　self-centering　(SC)　dampers　are　promising　alternatives　of　conventional　seismic　dampers,　if　residual　deformation　is　designated　with　a　substantial　weight　in　measuring　seismic　resilience.　Recently,　SC　slip　friction　dampers　(SCSFDs)　attract　wide　attentions　among　the　earthquake　engineering　community.　SCSFDs　mainly　consist　of　recentering　elements　(springs)　and　friction　plates.　According　to　the　springs　that　are　utilized,　SC　slip　friction　dampers　are　divided　into　the　disc　spring　(DS)-　based　ones　and　shape　memory　alloy　(SMA)-　based　ones.　The　difference　between　the　DS　and　SMA　is　that　the　former　has　zero　damping　ability,　whereas　the　latter　could　dissipate　energy　through　inherent　hysteretic　behavior.　However,　the　effect　of　such　difference　on　the　seismic　behavior　of　systems　with　different　dampers　remains　unknown.　Besides,　the　coefficient　of　kinetic　friction　of　the　friction　plates,　which　is　critical　to　the　hysteresis　width　of　SCSFDs,　also　requires　extensive　discussions.　To　this　end,　this　paper　makes　comprehensive　comparisons　between　single-degree-of-freedom　(SDOF)　linear　systems　with　DS-　or　SMA-　based　SCSFDs.　Two　example　structures　are　firstly　used　for　preliminarily　understanding　the　response　differences.　And　then,　the　observations　are　further　extended　to　systems　with　various　strength　capacities,　fundamental　periods　and　seismic　intensities.　©　2024　Institution　of　Structural　Engineers