Galvanized Cold Rolled Sheet DX51D

Overview

DX51D hot-dip galvanized cold rolled sheets combine the dimensional precision of cold rolling with the long-term corrosion protection of a continuous hot-dip galvanizing line. The metallurgically bonded zinc coating provides sacrificial cathodic protection, meaning the steel substrate remains protected even at cut edges and minor surface damage.

Key Features

• Multiple coating weights — Z100, Z200, and Z275 (g/m² total both sides) for different exposure classifications
• Spangle options — regular, minimized, or zero spangle for differing aesthetic and paintability requirements
• Passivation treatment — chromate-free passivation (RoHS compliant) prevents wet storage stain
• Formability — DX51D grade supports bending and roll-forming without zinc delamination
• Extended service life — Z275 coating provides 25+ years corrosion protection in rural environments

Typical Applications

Roofing and wall cladding sheets, steel framing for dry construction, HVAC ductwork, automotive underbody parts, agricultural buildings, and domestic appliance housings.