Labels:bulletin board | outboard motor | poster | sky OCR: Abuse and Impact Test Methods Surface Abrasion: (ASTM 4977 Modified A sample KC laid flat and subjected 50 abrasion cycles wire brush weighted with an additional Ibs The depth abrasions in three consecutive samples is measured and reported as the mean depth of abrasion in inches This test measures the ability panel withstand scuffs and abrasions subiected
