Investigating　the　mechanical　properties　of　stainless-steel　cables　at　elevated　temperatures　is　important　for　the　fire-resistant　design　and　fire　simulation　analysis　of　prestressed　structures.　Stainless　steel　cables　comprise　several　stainless-steel　wires　encircling　a　core　wire　in　different　layers.　The　overall　mechanical　capacity　of　a　stainless-steel　cable　is　attributed　to　the　individual　properties　and　collaborative　mechanism　of　the　stainless-steel　wires.　In　this　study　considering　the　number　of　layers　of　a　stainless-steel　wire,　42　stainless　steel　cables　with　19,　37,　and　61　wires　were　tested　under　steady-state　tension　at　ambient　and　elevated　temperatures　ranging　from　100　degrees　C　to　600　degrees　C.　The　test　results　show　that　the　cables　exhibit　typical　nonlinear　characteristics　with　a　lower　proportional　limit　and　no　obvious　yield　plateau.　There　is　no　obvious　effect　of　twisting　characteristics　on　the　elastic　modulus　of　the　cables;　however,　the　ultimate　tensile　strength　and　0.2%　proof　strength　decrease　gradually　with　the　increase　in　the　number　of　wire　layers.　The　reduction　factors　of　the　mechanical　properties　of　a　stainless-steel　material　at　elevated　temperatures　obtained　as　per　EN1993-1-2　were　higher　than　those　obtained　in　this　study,　particularly　of　the　0.2%　proof　strength.　Equations　for　the　elastic　modulus,　ultimate　strength,　0.2%　proof　strength,　and　fracture　strain　of　the　cables　at　elevated　temperatures　are　proposed　in　this　paper.　Furthermore,　a　modified　two-stage　Ramberg-Osgood　model　for　stainless　steel　cables　at　ambient　and　elevated　temperatures　is　proposed.