Depth of superficial defects


There are INTERNATIONAL STANDARDS governing the acceptance limits of superficial defects.

AUSA is covered by STANDARDS such as EN 10277-1 Class 1, EN 10277-1 Class 2 and EN 10277-1 Class 3 for cold drawn steels.

Standard EN 10277-1 Class 1

Dimensional range, mm.Maximum depthStandardClass
 t ≤ 150,3 mm.EN 10277-11
15 < t ≤ 1000,02 x t mm.EN 10277-11

Standard EN 10277-1 Class 2

Dimensional range, mm.Maximum depthStandardClass
 l ≤ 150,3 mm.EN 10277-12
15 < l ≤ 750,02 x d mm.EN 10277-12
l > 751,5 mm.EN 10277-12

Standard EN 10277-1 Class 3

Dimensional range, mm.Maximum depthStandardClass
 d ≤ 200,2 mm.EN 10277-13
20 < d ≤ 750,01 x d mm.EN 10277-13
d > 750,75 mm.EN 10277-13