Molten　salts　have　been　widely　adopted　for　solar　thermal　power　stations　because　of　their　superior　thermophysical　properties.　However,　the　corrosive　effect　on　the　metal　material　with　molten　salt　is　an　important　factor　for　the　long-term　operation　of　CSP　systems.　For　the　study　of　the　corrosive　influence　on　metallic　materials　of　molten　salts　in　dynamic　conditions,　the　corrosion　performance　of　the　347H　sample　in　molten　salts　at　different　flow　rates　was　analyzed　by　using　nitrate-carbonate　molten　salt　as　the　base　salt.　The　findings　revealed　a　higher　corrosion　rate　of　the　347H　samples　under　dynamic　conditions,　compared　to　static　conditions.　Moreover,　as　the　flow　velocity　for　the　molten　salt　increases,　347H　sample　corrosion　rates　increase.　The　morphological　analysis　of　the　347H　sample　revealed　that,　under　molten　salt　static　conditions,　a　dense　corrosion　layer　was　mainly　formed　in　the　347H　sample,　while,　under　molten　salt　dynamic　conditions,　a　grooved　structure　was　observed　in　the　347H　sample.　The　main　corrosion　products　of　347H　samples　in　different　flow　rates　are　composed　of　Fe2O3,　Fe3O4,　NiFe2O4　and　NaFeO2.　Therefore,　for　changing　the　molten　salt　flow　rate,　the　sample＇s　corrosion　morphology　changes　but　does　not　affect　the　sample＇s　corrosion　product　type.　©　Published　under　licence　by　IOP　Publishing　Ltd.