This　paper　proposes　a　new　type　of　metal　damper,　or　rather　a　slotted　beam–column　joint　damper　(SJD),　suitable　for　beam–column　energy-dissipating　joints　of　fabricated　structures　to　reduce　damage　to　main　structures　in　earthquakes.　An　SJD　comprises　variable-thickness　flanges　and　a　slotted　web.　The　flanges　are　the　primary　energy-consuming　part,　and　the　web　ensures　the　necessary　bearing　capacity.　The　characteristics　of　the　artificial　plastic　hinge　frame　were　analyzed,　and　the　effects　of　the　thickness　of　the　flanges　and　the　web　slotting　on　the　weakening　and　plasticity　ratios　were　discussed.　Four　slotted　beam–column　joint　dampers　with　distinct　material　properties　or　slotting　directions　were　designed　and　constructed　for　the　quasi-static　cyclic　loading　tests.　The　results　confirmed　that　the　SJD　had　good　hysteretic　characteristics,　ductility,　and　stable　energy　dissipation.　However,　as　discussed　in　detail,　the　slotted　beam–column　joint　dampers　with　various　material　properties　and　slotting　directions　differed　in　yield　characteristics,　failure　modes,　and　energy　dissipation.　This　study　also　discussed　the　detachable　connection　for　this　new　damper.　©　2022