Tag: ASTM D3359-02

Inspect the grid area for removal of coating from the substrate or from a previous coating using the illuminated magnifier. Rate the adhesion in accordance with the following scale illustrated in Fig. 1: 5B The edges of the cuts are completely smooth; none of the squares of the lattice is detached. 4B Small flakes of the coating are detached at intersections; less than 5 % of the area is affected. 3B Small flakes of the coating are detached along edgesRead More …