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The article presents a study on the influence of chemical composition on the hardness and microstructural properties in case of crushing hammers used in stone quarries that can be refurbishment by welding, using different types of filler material. In this research paper it is analyzed the effect that chemical composition of the filler material exerts on the microstructure of the loading area, the dilution effects at the welding interfaces level and the modification of the microhardness. Threedoi:10.37358/rc.19.2.6927 fatcat:sqxyyrvakrfcxes3qbgnuoduqm