scope:

This specification covers the general requirements for the delivery of steel sheet in coils and cut lengths, zinc-coated (galvanized) on continuous lines by the hot-dip process. Galvanized steel sheet is customarily available in commercial quality, lock-forming quality, drawing quality, drawing quality special killed, and structural (physical) quality, which are fully described in separate standards (Section 2). Galvanized steel sheet is produced to various zinc-coating designations, as shown 10 Table 1, designed to give coatings compatible with the service life required. Except for differential-coated sheet, the coating is always expressed as the total coating of both surfaces. Galvanized steel sheet can be produced with the following types of coatings:

Regular spangle,

Minimized spangle,

Zinc-iron alloy, and

Differential.

NOTE 1-This specification is the metric counterpart of Specification A 525.