The effect of the introduction of different alloying elements to commercial pre-alloyed powders and subsequent thermal treatment on the hardness, wear behaviour and microstructure was investigated. Prealloyed powders based on both Fe-Cu and Fe-Cu-Sn systems were used as starting powders. Master alloys additions were included in these systems. Green compacts were sintered in reducing atmosphere. After full characterization, as-sintered specimens were austenitized and quenched in water. Tempering treatments were also carried out in terms of decreasing the possible brittleness produced during quenching. DSC analysis, dilatometry and thermodynamic calculations together with microstructural characterization were used to set the austenitizing temperatures of the blends. Hardness values from 200 HV10 to 497 HV10 have been achieved together with a dramatic increase in the wear resistance.