Standard　uniaxial　tests　were　conducted　on　round　bar　specimens　made　of　stainless　steel　and　the　corresponding　weld　metal.　The　stress-strain　curves　of　both　base　metal　and　the　corresponding　weld　metal　were　obtained.　The　constitutive　relationship　for　base　metal　and　the　corresponding　weld　metal　were　calibrated　against　the　test　results　and　were　taken　into　consideration　for　further　finite　element　analysis　on　stainless　steel　fillet　welded　connections.　Six　transverse　fillet　welded　connections　and　five　longitudinal　fillet　welded　connections　were　tested　to　investigate　the　strength,　deformation,　and　fracture　angle　of　stainless　steel　fillet　weld　connections.　According　to　the　test　results,　the　average　angle　of　stainless　steel　transverse　fillet　weld　was　29　degrees;　the　average　angle　of　stainless　steel　longitudinal　fillet　weld　connection　was　46　degrees.　The　ultimate　strength　for　a　transverse　fillet　weld　connection　was　1.5　times　than　that　of　a　longitudinal　fillet　weld.　Relevant　numerical　models　using　ANSYS　were　calibrated　against　experimental　results.　Further　parametric　studies　were　conducted　to　investigate　the　effect　of　weld　length　and　weld　size　on　the　strength　of　stainless　steel　fillet　welded　connections.　Finally,　both　the　experimental　and　numerical　results　were　compared　with　the　current　design　provisions.　The　conservatism　of　the　European,　American,　and　Chinese　design　codes　was　discussed.　A　revised　prediction　of　fillet　weld　strength　was　proposed　based　on　the　strength　of　the　longitudinal　fillet　weld　strength.　(C)　2018　Elsevier　Ltd.　All　rights　reserved.