When　welding　steel　with　aluminum,　the　appearance　of　intermetallic　compounds　of　Fe　and　Al　will　decrease　tenacity　and　increase　rigidity,　which　leads　to　bad　joint　performance.　A　new　type　of　low　energy　input　(LEI)　welding　technology　is　introduced　which　can　be　used　to　weld　steel　with　aluminum.　Using　the　technology,　brazing　was　located　on　the　steel　side　and　arc　fusion　welding　on　the　aluminum　side.　The　less　heat　input　reduces　the　thickness　of　intermetallic　compounds　to　3-4　μm.　Tensile　strength　tests　prove　that　the　joint　breaks　at　the　heat-affected　zone　and　the　strength　is　higher　than　70%　of　the　aluminum＇s.　Thus,　the　method　can　lead　to　a　good　performance　joint.　©　2009　Higher　Education　Press　and　Springer-Verlag　GmbH.