Comprehensive Product Range To Meet International Standards
Hot-dip galvanized sheet (Z)
Within the group of surface-treated sheets, hot-dip galvanized sheet leads with regard to both output and to fields of use. Work-hardened cold-rolled strip is continuously recrystallized in a furnace, drawn through a zinc bath, and in the process, given a zinc coating (hot-dip process). TAGAL supplies hot-dip galvanized steel coils in accordance with DIN EN 10142, DIN EN 10147 and DIN EN 10292.
Zinc coatings
60, 100, 140, 200, 275, 350 g/m2 depending on grade, strip cross-section and surface finish 1). Further coating masses and different coatings on each side by arrangement.
Surface finish
Minimized spangle (M) is obtained when the solidification is controlled. In general, the crystallite boundaries are no longer visible to the naked eye.
Surface qualities
A, B, C in accordance with DIN EN 10142 depending on coating and grade. B and C are achieved by skin passing.
Surface treatment
Anti-fingerprint (AFP), chemically passivated (C), oiled (O), chemically passivated and oiled (CO), phosphate-treated (P), phosphate-treated and oiled (PO).
Tolerances
Tolerances on dimensions and shape in accordance with DIN EN 10143.
Grades
Please see the following:
Hot-dip galvannealed sheet (ZF)
This variant is produced by a process in which the hot-dip galvanized strip passes immediately after the zinc bath and air knives through a heat treatment which, via a diffusion process with the steel base, converts the zinc layer to a zinc-iron layer. The iron proportion in the layer is 8-11%. The layer is an ideal base for painting. Hot-dip galvannealed sheet has excellent welding and adhesion properties. It is supplied in accordance with DIN EN 10142, DIN EN 10147 and DIN EN 10292.
Zinc-iron coatings
60, 120 g/m2 depending on grade, strip cross-section and surface finish 1).
Further coatings by arrangement.
Surface finish
Zinc-iron alloyed (R). The surface appears uniformly dull grey.
Surface qualities
A, B, C in accordance with DIN EN 10142. B and C are achieved by temper-rolling.
Surface treatment
Oiled(O), phosphate-treated(P), phosphate-treated and oiled(PO), chemically passivated(C), antifingerprint (AFP).
Tolerances
Tolerances on dimensions and shape in accordance with DIN EN 10143.
Grades
Please see the following:
| Europe | USA | Japan | ||
| Hot-dip galvanized sheet (Z) | Mild steels for cold-forming | EN 10142 | ASTM A653 | JIS 3302 |
| Galvannealed (ZF) | Structural steels | EN 10147 | ||
| All coatings | Steels with higher yield | EN 10292 | ||
| strength for cold-forming | ||||
| Dimensional and shape tolerances | EN 10143 | ASTM A924 | JIS 3302 | |
| JIS 3314 |