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.
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:
Atlas Fibre is among North America’s top suppliers of thermoset composite laminates. We offer various forms of FR5 materials in stock, including:
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:
If you want to learn more about FR5, G11, or any other thermoset materials we offer, the expert team at Atlas Fibre can assist you. We pride ourselves on our top-class customer service, helping each client select the most practical and cost-effective material solutions to meet the requirements of their unique applications. We also boast one of the industry’s largest selections of in-stock materials, enabling us to offer some of the industry’s shortest turnaround times.
*Atlas Fibre LLC provides this data as information only and does not imply any warranty for its use or application. Test results for a specific sheet or lot are available for a fee upon request.