Prikazani su rezultati ispitivanja otpornosti čelika Č.1531 u dostavnom, poboljšanom i boriranom stanju na erozijsku koroziju u zakiseljenoj otopini NaCl sa suspendiranim kremenim pijeskom. Ustanovljeno je da borirani sloj znatno usporava erozijsko-korozijsko trošenje, čemu svakako pridonosi njegova visoka tvrdoća. Poboljšavanjem se erozijsko-korozijska otpornost u manjoj mjeri smanjuje.

Testing results of erosion-corrosion resistivity of steel Ck 45 (Č.1531) in delivered, tempered and boronized state are presented. The specimens were exposed to acidified NaCl-solution with suspended quartz sand. It has been established that boride layer substantially retards erosion-corrosion wear that is certainly associated with high surface hardness. By tempering the erosion-corrosion resistance is slightly decreased.