Concrete-filled　stainless　steel　tube　(CFSST)　members　combine　the　advantages　of　the　outstanding　corrosion　resistance　of　stainless　steel　and　the　composite　action　in　concrete-filled　steel　tube　(CFST)　system.　However,　accurate　calculation　methods　for　this　type　of　structures　are　currently　limited　and　research　into　CFSST　members　with　hotrolled　stainless　steel　tubes　are　not　available.　In　this　paper,　the　compressive　behavior　of　CFSST　stub　columns　has　been　investigated　through　a　comprehensive　experimental　and　numerical　program.　A　total　of　18　specimens,　including　9　concrete-filled　austenitic　stainless　steel　tube　(austenitic　CFSST)　and　9　concrete-filled　duplex　stainless　steel　tube　(duplex　CFSST)　stub　columns,　were　tested　under　compression.　The　varying　parameters　in　the　experimental　study　included　the　thickness　of　the　stainless　steel　tube　and　the　strength　of　the　concrete.　Finite　element　(FE)　models　duplicating　the　tests　were　developed,　which　were　subsequently　used　in　parametric　study　to　generate　a　wider　range　of　data　and　to　investigate　the　influence　of　the　tube　thickness　and　concrete　strength　on　the　ultimate　capacities　of　CFSST　stub　columns.　Based　on　the　generated　data,　it　was　found　that　the　current　European　and　Chinese　standards　for　concrete-filled　carbon　steel　tubes　underestimate　the　resistances　of　CFSST　members　significantly.　To　this　end,　new　calculation　methods　developed　based　on　these　European　and　Chinese　design　rules　have　been　proposed,　which　were　shown　to　provide　improved　strength　predictions　for　both　the　austenitic　and　duplex　CFSST　members.