Building　upon　a　previous　investigation,　this　study　reports　a　total　of　13　experimental　tests　on　austenitic　and　duplex　stainless　steel　T-stubs　subject　to　monotonic　loading.　The　structural　behaviour　of　the　tested　T-stub　specimens,　including　load　versus　displacement　(F-Delta)　curves　and　corresponding　failure　modes,　was　obtained　and　is　reported　herein.　The　experimental　tests　were　replicated　by　finite　element　(FE)　analysis,　and　upon　validation　of　numerical　models,　a　comprehensive　parametric　study　including　168　FE　models　was　conducted　to　investigate　the　effects　of　key　parameters　such　as　material　grade,　bolt　preloading,　bolt　diameter　and　flange　thickness　on　the　structural　response.　Based　on　both　experimental　and　numerical　results,　the　suitability　of　the　design　provisions　for　the　determination　of　the　plastic　resistance　specified　in　EN　1993-1-8,　proposed　extensions　thereof　by　Demonceau　et　al.　to　cover　T-stubs　with　four　bolts　per　row　for　stainless　steel　T-stubs　as　well　as　the　design　method　codified　in　Chinese　code　JGJ　82　were　assessed.　Novel　design　methods　for　the　determination　of　the　initial　stiffness　and　the　plastic　resistance　of　stainless　steel　T-stubs,　accounting　explicitly　for　the　observed　structural　response　and　the　pronounced　material　strain　hardening　were　developed.　The　proposed　design　methods　lead　to　improved　and　more　consistent　capacity　predictions　and　their　adoption　in　design　standards　is　recommended　herein.　(c)　2020　Elsevier　Ltd.　All　rights　reserved.