Perforated Coated Steel

Perforated carbon sheet steel can be coated to make it corrosion resistant. Coatings applied after the perforating process, such as paint and powder, will completely protect the perforated metal, but coatings applied before perforating (e.g. galvanized and galvanealed) will leave the inside of the holes exposed.

Coated Perforated Sheet Steel Examples

Galvanized

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A versatile low cost corrosion resistant steel with a zinc coating applied by a continuous hot-dip process. Available in Commercial, Drawing and other qualities.

 

Corrosion Resistant Galvanized Steels
Galvanized (ASTM#525)	A versatile, low-cost, corrosion resistant steel with a zinc coating applied by a continuous hot-dip process. Available in Commercial, Drawing and other Qualities.
Mill-Bonderized Galvanized	Galvanized sheet with a coating of mill-bonderized phosphate for immediate painting without flaking or peeling.
Electro-Galvanized (ASTM #A591)	A thin zinc coating is applied to cold rolled steel by electro-plating so as not to appreciatively affect the weight-thickness relationship. Smooth, without spangles, it is recommended as an undercoat for painted finishes. Available in Commercial and Drawing Qualities.

 

Galvanealed

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Heat treated galvanized sheets, dull grey without spangles with a rough texture well suitable to painting. Can withstand temperatures up to 750°F without flaking. Less ductile than regular galvanized coating.

Other coated steels can be perforated but are often not readily available. Consult your Customer Service representative if you have a need for this.

 

Corrosion Resistant Galvanealed Steels
Galvanealed (Coating Designation A60) (ASTM #A653)	Heat treated galvanized sheet, dull gray without spangles with a rough texture well suited to painting. Can withstand temperatures to 750° without flaking. Less ductile than regular galvanized coating.