In recent years, applying boride-rich cored wires is growing in industry. This is because of special properties produced by coating these materials in surfacing. The cored wires are applicable in different industries especially where corrosion and wear are important. Hardfacing of low carbon steel using a boron– rich cored wire alloy has been investigated. Arc spraying and gas metal arc welding (GMAW) methods were used in order to form a series of boride rich layers on the surface of low carbon steel. Experimental samples were prepared and coating was carried out under various conditions. Optical and electron microscopy, hardness and microhardness testing, XRD, and pin-on-disk wear test were used to evaluate the microscopic structure, surface roughness, mechanical properties type of boride layers, resistance and friction coefficient of boride layers, respectively. The results showed that the layer produced by arc spraying has a laminar type microstructure including iron borides (Fe 2 B and probably FeB, ?-Fe), oxide, and voids. The results of XRD showed that there are sharp peaks for ?-Fe, Fe 2 B and FeB phases in the coating, but by accurate comparison of the patterns, it can be seen that the more strong peaks belong to Fe 2 B. Considering the diffraction patterns, it can be said that the structure consists of hard Fe 2 B layers, low ?-Fe eutectic content plus Fe 2 B and undesirable FeB phase. The bonding of coating layer to the substrate is mechanical. Structure of the GMAW layer consists mainly Fe 2 B primary borides and probably FeB among a eutectic of borides and ?-Fe. XRD pattern Showed that boride phases content will increase from the interface to the substrate surface. The bonding between coating layer and the substrate is of metallurgical type. Boride composition in arc sprayed layers caused an increase in microhardness up to of 2300 Vickers and values of 1500 Vickers in GMAW deposits. Considering the wear path, wear particles, and surface of the pins by electron microscopy and EDS, it was observed that the main wear type was sliding wear. Oxidation, plastic deformation and lamination mechanisms took place in wear testing. Boride layers formation caused a considerable increase in wear resistance and a decrease in friction coefficient. Cooperation of the results indicated that the wear resistance in arc sprayed layers was higher than GMAW layers This difference in the wear rates is explained in terms of the much higher hardness of the borides and the different wear mechanisms. In particular, the transition from mild to sever wears mechanism occurring in steel suppressed in the case of the borided coatings, due to their higher load bearing capacity. .. Key Words: Alpha 1800, Arc spray, GMAW, Microhardness, XRD, Wear