Sherwin-Williams Launches Zinc Epoxy Coating

Sherwin-Williams Protective & Marine Coatings announced the launch of its Zinc Clad 4100 coating on October 10. The company said its new high-solids coating features recoat times as short as 30 minutes and allows for accelerated shop throughput, enhanced project schedules and fast field project turnarounds.

Providing further efficiencies, the three-component, organic zinc-rich epoxy coating eliminates the need for sweat-in time. Sherwin-Williams said its user-friendly packaging allows applicators to mix components directly in the Part A container for faster and more accurate mixing.

Designed for use over properly prepared blasted steel, the organic zinc-rich primer delivers application properties and performance in the field. For example, the company said Zinc Clad 4100 provides cathodic protection to reduce corrosion potential in the event of the steel substrate being exposed due to coating damage. The coating exhibits self-healing properties if it becomes damaged.

“Zinc Clad 4100 answers our customers’ need for a high-solids organic zinc-rich epoxy that enables productivity improvements across an array of shop and field applications,” said Tim McDonough, marketing director–products and services.

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According to the company, Zinc Clad 4100 enables expanded application opportunities for the bridge and highway and structural steel markets due to its performance characteristics. The coating meets Class B requirements for slip coefficient and creep resistance as defined by the Research Council on Structural Connections for use in slip-critical bolted connections in all U.S. states. It also meets the performance requirements of NEPCOAT List B for use on highway bridge steel in the Northeast U.S., said the company.

The epoxy coating can be applied over properly prepared blasted steel for a wide range of shop or field applications, including bridge and highway structures, stadiums and sports complexes, steel fabrication shops, piping, barges and ships, drilling rigs and refineries.