GPO-3 Thermoset

GPO-3 Thermoset is Widely Used For:

  • Insulators for electromechanical devices
  • Structural parts that require outstanding strength, stiffness, and durability at
    relatively low cost

Performance Characteristics:

  • Strong and stiff
  • Impact resistant
  • Excellent electrical properties
  • Good flame and smoke characteristics
  • Dimensionally stable

Common Brands:

  • Glastic®
  • Haysite®
  • GPO-3

GPO-3 Thermoset

Thermoset sheet material that consists of polyester resin with glass reinforcement

GPO-3 is a glass reinforced thermoset polyester sheet material. GPO-3 is strong, stiff, dimensionally stable, and impact resistant. The material also has excellent electrical properties including flame, arc, and track resistance. It is widely used for electrical insulating applications. GPO-3 is also used for mechanical applications where strength, stiffness, dimensional stability, and relatively low cost are required.

Tech Tip– Like many glass reinforced thermoset sheet materials, GPO-3 is somewhat abrasive on tooling during machining operations.

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SHEET Dimensions:
36 in x 72 in – 48 in x 96 in
0.031 in – 2.0 in

Length, width, thickness, and diameter tolerances vary by size, by manufacturer, brand, and grade. Custom sizes available upon request.

GPO-3 Thermoset Properties

Typical properties OF GPO-3 THERMOSET
Specific gravity   D792 1.80
Tensile strength (CW) psi D638 8,000 - 11,000
Flexural strength (CW) psi D790 18,000 - 25,000
Flexural modulus psi D790 1,500,000
Compressive strength psi D695 30,000 - 35,000
Izod impact (notched, CW) ft-lbs/in of notch D256 8.0 - 9.5
Water absorption (immersion 24 hours) % D229 0.20

Values may vary according to brand name. Please ask your Curbell Plastics representative for more specific information about an individual brand. 

Explore the physical, mechanical, thermal, electrical, and optical properties of GPO-3 thermoset.

Sort, compare, and find the plastic material suited for your application using our interactive properties table.