Extensive　studies　have　been　conducted　in　the　past　to　investigate　the　behaviour　of　stainless　steel　at　ambient　and　elevated　temperatures.　In　contrast,　little　information　is　available　on　its　post-fire　behaviour.　In　the　present　study,　tensile　tests　were　conducted　on　three　types　of　stainless　steel　(i.e.,　austenitic,　duplex　and　ferritic　alloys)　to　determine　their　full-range　stress-strain　curves.　Coupons　extracted　from　the　original　sheet　materials　and　the　flat　parts　of　square　hollow　sections　were　heated　to　various　temperatures　up　to　1200　degrees　C　and　then　cooled　down　to　room　temperature.　The　effects　of　temperature　on　different　mechanical　properties,　including　the　elastic　modulus,　yield　stress,　ultimate　strength,　ultimate　strain　and　strain　hardening　exponent,　are　analysed.　Based　on　regression　analysis,　suitable　modifications　are　made　to　an　existing　stress-strain　model　proposed　by　the　authors　for　austenitic　stainless　steel　in　an　earlier　paper.　After　the　modifications,　the　revised　model　can　be　applied　to　evaluate　the　post-fire　behaviour　of　all　the　three　types　of　stainless　steel.　(C)　2018　Elsevier　Ltd.　All　rights　reserved.