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Typical Properties of Thermosetting Powder Coating
The table below shows the typical properties of the various resin types in systems.
Products within these systems may be formulated to exceed the values listed.

chart

Product Recommendations Based on Resin Systems
  • E   Epoxy Powder Coating-Epoxies offer coatings with excellent mechanical and chemical resistance properties when used on interior applications or for exterior applications where changes in color, gloss and appearance are acceptable. Generally epoxies are not recommended for exterior application because of rapid loss of gloss and color when exposed outdoors.
  • H   Epoxy Polyester Hybrid Powder Coating-Hybrids offer most of the advantages of the epoxies in mechanical and chemical resistance properties and offer improved properties such as greater resistance to yellowing during cure, better transfer efficiency, and cleaner, brighter colors than many epoxy formulations. They are sometimes more economical than epoxies but do have less solvent resistance. Hybrids are not recommended for exterior applications where changes in color, gloss and appearance are not acceptable.
  • G   General Purpose Polyester Powder Coating-A thin film aromatic urethane powder with excellent flow that offers good mechanical and chemical resistance properties in the range of 1 to 2.5 mils. These powders are designed for interior applications. They are not recommended for films greater than 4 to 5 mils in thickness. These products are UL approved.
  • U   Polyester Urethane Powder Coating-Polyester Urethane powders are thin film exterior durable aliphatic urethane coatings that offer good mechanical and chemical resistance properties in the range of 1 to 2.5 mils. These powders can be used both on interior and exterior applications. They are not recommended for films greater than 4 to 5 mils. These products are UL approved.
  • T   Polyester TGIC Powder Coating-Polyester TGIC powders are exterior durable coatings that allow more flexibility at thicker films than polyester urethane. Thickness of 3 to 6 mils offers good mechanical properties. These coatings will also cure at lower temperatures than the standard polyester urethane. They have less flow than the polyester urethane therefore offer better edge coverage, but exhibit reduced smoothness at films less than 2 mils.
  • S   Silicone Powder Coatings (These may also include silicones combined with other systems)-Epoxy Silicones offer heat resistance properties. Continuous serviceable temperatures of 400° to 450°F and intermittent serviceable temperatures up to 700°F can be achieved. They can be formulated to conform to FDA Section 21 CFR 175.300. Other silicone based systems, such as Acrylic Silicones with higher heat resistance are also available. Silicones offer excellent corrosion and exterior durable characteristics with heat resistant properties. Continuos serviceable temperatures op to 800°F and intermittent serviceable temperatures up to 1100°F can be achieved.
  • A   Acrylic Based Powder Coatings-Acrylic based powders offer excellent hardness, chemical solvent, stain resistance with exceptional weathering and heat resistance.