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9 oz. Fiberglass 8-Harness Satin Weave Fabric Style 7781



9 oz. Fiberglass 8-Harness Satin Weave Fabric Style 7781 9oz conforms easily to surfaces and curves. Drapable and ideal for bulking.
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The 9 oz. Fiberglass fabric is a highly drapable eight harness (8HS) satin weave fabric woven from E-glass fibers. It is an excellent all-purpose fiberglass fabric and will conform easily to contoured surfaces and compound curves.

It is used to bulk up laminates or tooling and is suitable for use in wet layup, vacuum bagging and resin infusion manufacturing.

It has been sized with an epoxy and polyester compatible finish to enhance wet-out and is compatible with polyester, vinyl-ester and epoxy resins.


Physical Properties

  • Style: 7781
  • Weave: 8 Harness Satin Weave
  • Weight: 8.87 oz/yd²
  • Thickness: .008″
  • Fabric Count (Warp x Fill): 57 x 54
  • Warp Fiber: E-Glass
  • Fill Fiber: E-Glass
  • Warp Fiber Strength: 501 lbf/in
  • Fill Fiber Strength: 408 lbf/in

Technical Fiber Properties

  • Fiber: E-Glass
  • Density: .095 lb/in³
  • Tensile Strength: 500 ksi
  • Tensile Modulus: 10.5 msi
  • Strain to Failure: 4%
  • Specific Tensile Strength: 5.28 106 in
  • Specific Tensile Modulus: 1.11 108 in
  • Coefficient of Thermal Expansion: 3 x 10-6/°F
  • Decomposition Temperature: 1346°F

Please note: All data to be used as a guide only; not a specification.


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  • Epoxy Resin
  • Polyester Resin
  • Vinyl-ester Resin


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