1.1 These test methods cover the determination of the resistance of organic coatings to abrasion produced by abrasive falling onto coatings applied to a plane rigid surface, such as a metal or glass panel. 1.2 Two test methods based on different abrasives are covered as follows:   Sections Method A—Falling Sand Abrasion Test ?6 – 13 Method B—Falling Silicon Carbide Abrasion Test 14 –