Wear caused by metal-to-metal contact; characterized by local welding and tearing of the surface.

Wear caused by sliding surfaces, where surface asperities interact and adhere.

Adhesive wear: Wear due to localized bonding between contacting solid surfaces leading to material transfer between the two surfaces or the loss from either surface.

Is often referred to as galling, scuffing, scoring, or seizing. It happens when sliding surfaces contact one another, causing fragments to be pulled from one surface and to adhere to the other.

A condition whereby excessive friction between high spots results in localized welding with subsequent spalling and further roughening of the rubbing surfaces of one or both of the mating parts. This is a typical tool failure mode. The low coefficient of friction of our coatings protects against this type of wear.

Wear resulting from two metals rubbing against each other, such as the screw flight lands and valve rings coming into contact with the barrel lining during operation.

Material removal caused by the formation of localized material attachment and the subsequent tearing off of solid particles in conjunction with material fracture and metal transfer (DIN 50323-2); smearing or galling.