ASTM A525

Description / Abstract: 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 in Table I, 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-A complete metric companion to Specification A 525 has been developed-A 525M; therefore no metric equivalents are presented in this specification.