Galling occurs when two metal surfaces which are to alike in hardness, and are both generally softer than ideal, rub against each other with enough friction to cause mutual gouging of their mutual surfaces, and mutual exchange of surface material.
Proper lubrication can help alleviate the problem, but proper metalergy is a better solution.
Yr. Obt. Svnt.
Fred J. Drumheller
Nra Golden Eagle