A latching mechanism has steel mating surfaces of 100 and 300 Bhn rubbing back and forth over a distance of 30 mm each time the latch is operated. Lubrication is questionable (the surfaces are supposed to get a drop of oil every few months). The latch is operated an average of 46 times per day, every day. Required:
Estimate the volume of metal in mm3 that will wear away from the softer steel member during one year of use if the compressive load between the surfaces is F = 198 N.