The　brazing　of　316L　stainless　steel　was　carried　out　by　using　Nickel　based　filler　metal　BNi685　foil.　The　effect　of　brazing　clearance　on　the　microstructure　and　mechanical　properties　of　brazed　joint　was　studied.　The　corrosion　resistance　of　joints　brazed　with　the　new　BNi685　foil,　commercial　BNi2　and　BNi685　paste　filler　metals　were　also　compared.　The　results　show　that　with　the　increase　of　gap　clearance,　the　tensile　strength　of　the　brazed　joint　decreases　gradually,　and　the　microhardness　at　the　center　of　the　joint　increases.　When　the　brazing　clearance　is　50　μm,　the　joint　achieved　a　maximum　tensile　strength　of　244　MPa.　The　microstructure　of　the　brazing　seam　is　mainly　composed　of　Ni2.9Cr0.7Fe0.36　ductile　phase　and　a　small　amount　of　FeNiCr(P)　brittle　phase.　With　the　increase　of　gap　clearance,　the　FeNiCr(P)　brittle　phase　at　the　center　of　the　brazing　seam　increases,　and　the　Ni2.9Cr0.7Fe0.36　ductile　phase　decreases.　The　corrosion　resistance　of　the　BNi685　brazed　joint　is　superior　to　that　of　the　BNi2　and　BNi685　paste　brazed　joint.　BNi685　filler　metal　has　a　strong　application　potential　for　EGR　coolers　fabrication.　©　2019,　Editorial　Board　of　Transactions　of　the　China　Welding　Institution,　Magazine　Agency　Welding.　All　right　reserved.