2Cr13　thin-wall　part　was　additively　deposited　by　robotic　cold　metal　transfer　(CMT)　tech-nology,　and　two　traditionally　manufactured　counterparts　in　annealing　(as-Aed)　and　quenching　&　tempering　(as-QTed)　conditions　were　adopted　as　comparison.　The　results　show　that　only　a　strong　texturing　corresponding　to　alpha-Fe　phase　was　detected　for　the　wire-arc　additively　manufactured　(WAAM)　part,　indicating　an　austenite-free　structure.　As-deposited　microstructure　was　consisted　of　martensite　laths　and　ferrite　matrix,　along　with　irregular　delta-ferrite　precipitation.　The　martensitic　growth　direction　was　non-oriented　in　the　X-Y　plane,　but　primarily　parallel　to　the　depositing　direction　in　the　X-Z　and　Y-Z　planes　along　the　maximum　thermal　gradient.　Both　nanohardness　and　ultimate　tensile　strength　(UTS)　for　each　WAAM　sample　were　enhanced　when　compared　with　the　as-Aed　BM,　while　poorer　than　that　of　the　as-QTed　BM.　Such　mechanical　evolution　was　a　result　of　the　intrinsic　micro-structural　features,　whereas　the　similar　elastic　modulus　properties　were　mainly　attributed　to　the　similar　2Cr13　atomic　bonding.　A　ductile　tensile　fracture　behavior　was　dominant　in　the　X-Z　plane,　while　a　mixed　mode　of　ductile　and　brittle　fracture　occurred　in　the　X-Y　and　Y-Z　planes.　The　findings　above　reveal　an　isotropy　in　mechanical　properties　despite　a　slightly　microstructural　discrepancy　in　different　planes　for　the　as-deposited　2Cr13　WAAM　part.　(C)　2021　The　Authors.　Published　by　Elsevier　B.V.