High chromium Ferritic-martensitic (FM) steels are employed for especially thermal and nuclear power plant because of their low thermal expansion, corrosion resistance, and creep performance. In this study, weld metal phase transformation and mechanical properties oh high chromium steel without Ni were investigated. The microstructure of produced all weld metal were characterized by optical microscope (OM), scanning electron microscopy (SEM) with EDS. In addition, Thermo-Calc software was used to consider thermodynamic equilibrium stages and phase transformations. Differential scanning calorimetry (DSC) was employed in order to detect A1, A2, A3, and Ms-Mf temperature. Weld metal microstructure has tempered martensitic also precipitates observed mostly in the PAGB and lath boundary. a -> gamma transformation 834 degrees C and Curie temperature 737 degrees C observed by DSC. Impact energy at 25 degrees C 57J while 60 degrees C was 97J observed.