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AtlasFibre - Model FR5 -Fire-Retardant Glass Epoxy Material
FR5 is a fire-retardant glass epoxy material distinguished by its excellent thermal and electrical insulation properties. Comprised of a glass-fiber matrix and an epoxy resin, FR5 shares properties with the G11 and FR4 materials but stands out for its superior ability to resist high temperatures and fire. Its chemical resistance, high tensile strength, low moisture absorption, and high impact strength make it an ideal choice for demanding applications. Particularly valuable in high-temperature environments, FR5 ensures no melting and effectively prevents fire spread, which is why it is widely used in the automotive industry. Atlas Fibre's ability to customize FR5 materials in various forms, lengths, thicknesses, and diameters makes it possible to meet specific application needs with high precision and efficiency. With a focus on customer service, Atlas Fibre is committed to helping clients select and source the most cost-effective and practical material solutions available.
FR5 is a fire-retardant glass epoxy material that provides superior thermal and electrical insulation. Aside from its fire-retardant characteristics, FR5 is identical to G11 glass epoxy material. FR5 is a perfect thermoset for applications requiring excellent dimensional stability and mechanical strength with the ability to resist high temperatures while preventing the spread of fire or flames.
For these reasons, FR5 is generally a suitable substitute for projects that specify G11 material. However, manufacturers cannot substitute G11 for applications that require FR5, particularly if a fire-retardant material is needed.
FR5 Material Properties and Composition
Glass epoxy materials contain a glass-fiber matrix and an epoxy resin. While FR5 and G11 share the same material properties, FR5 is also similar to FR4 material, with the ability to resist higher temperatures. FR5 offers a comprehensive range of material benefits, including superior chemical resistance, high tensile strength, low moisture absorption, and high impact strength.
The primary material properties of G11 and FR5 glass epoxy include the following:
- Specific gravity: 1.82
- Tensile strength: 63,000 pounds per square inch (psi)
- Flexural strength – LW -A 0.125″: 75,000 psi
- Shear strength: 22,000 psi
- Bond strength: 2,200 psi
- Hardness (Mohs Scale): 112
- Flammability rating: 94HB
- Maximum operating temperature: 180 degrees Celsius (356 degrees Fahrenheit)
- Izod impact strength at 49 degrees Celsius -LW: 12.00
- Water absorption over 24 hours: 0.20
- Coefficient of thermal expansion in degrees Celsius (x10-5): 1.10
Atlas Fibre is among North America’s top suppliers of thermoset composite laminates. We offer various forms of FR5 materials in stock, including:
- Sheets: Various lengths, widths, and thicknesses.
- Tubes: Numerous lengths, wall thicknesses, and diameters.
- Rods: Many different lengths and diameters.
In addition, our customization abilities enable us to supply nearly any length, thickness, or diameter of glass epoxy material you need. Our experts can help you choose the perfect material fit that matches your application’s specifications.
Glass epoxy is one of the most practical and effective materials for electrical applications requiring high-performance insulation. Since FR5 is a thermoset, no melting will occur in high-temperature applications. Additionally, because of its fire-retardant properties, FR5 is highly popular among automakers.
Specific applications include the following:
- Sealing and gasket components
- Static electrical and induction system insulators
- Heating elements
- Rocket cases
- Cryogenic insulation
- Circuit board holders
- Antenna insulators