Thermoset Composites

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Overview
Performance Characteristics
Typical Applications
Typical Properties
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Thermoset composite sheet

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Thermoset Composites Data Sheet

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Overview Thermoset composite materials have the advantage of having extremely high strength and stiffness at relatively low cost when compared with thermoplastics.

Each thermoset composite consists of a reinforcement material such as glass fiber or woven cotton that has been impregnated with a plastic resin such as phenolic or epoxy. The resulting composite has unique properties depending on the resin-reinforcement combination selected.

Thermoset Composite Standard Sizes

SHEET 36"x48" (0.03"-10.0" thick)
48"x96" (0.03"-4.0" thick)
  • Length, width, thickness, and diameter tolerances vary by size and by manufacturer
  • Custom sizes and colors available upon request

Thermoset Composite Grades (Commercially Available)

  • Paper Phenolic

    X, XX, and XXX, and punchable grades
  • Canvas Phenolic

    C and CE
  • Linen Phenolic

    L and LE
  • Glass Epoxy

    FR-4, G-10, and G-11
  • Glass Melamine

    G-5 and G-9
  • Glass Silicone

    G-7
  • Glass Polyester

    GPO-1 and GPO-3

NOTE: Several grades of thermosets are available. For additional information on thermoset composites, contact your local Curbell Plastics representative or call Curbell at 1-888-287-2355.
Click to view
Thermoset composite sheet

DOWNLOAD
Thermoset Composites Data Sheet

Also, visit our technical resources section
Performance Characteristics
  • Strong and stiff
  • Outstanding electrical properties (electrical grades)
  • Excellent bearing and wear properties (bearing grades)
  • Good creep resistance
  • Dimensionally stable
  • High temperature grades available
Click to view
Thermoset composite sheet

DOWNLOAD
Thermoset Composites Data Sheet

Also, visit our technical resources section
Typical Applications
  • Electrical insulators (electrical grades)
  • Countertops and other work surfaces
  • Bearings, bushings, and gears (bearing grades)
  • Wear pads (bearing grades)
Typical Properties
UNITS ASTM TEST XX
(Paper
Phenolic)
CE
(Canvas Phenolic)
LE
(Linen Phenolic)
FR-4
(Glass Epoxy)
G7
(Glass Silicone)
Specific gravity D-792 1.35 1.37 1.34 1.80 1.88
Tensile strength (CW) psi D-638 11,500 9,000 9,000 38,000 -
Flexural strength (CW) psi D-790 17,000 15,000 16,000 60,000 15,400
Flexural modulus psi D-790 - 1,500,000 1,200,000 2,400,000 -
Compressive strength psi D-695 25,000 34,000 36,000 55,000 -
Hardness Rockwell (scale as noted) D-785 M95 M100 M100 M110 M100
Izod impact (notched, CW) ft-lbs/in of notch D-256 0.4 1.5 1.1 12.0 8.5
Maximum continuous service temperature in air °F 266 257 257 266 338
Water absorption (immersion 24 hours) % D-229 2.00 2.00 1.90 0.10 0.19
Values may vary according to brand name. Please ask your Curbell Plastics representative for more specific information about an individual brand.
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NEED MORE INFORMATION?
Contact Curbell Plastics at 1-888-287-2355 for more specific information about thermoset composites or complete our request for quote online form.