How should 3240, EPGC, G10, G11, FR-4, and FR-5 be compared?
Compare only grades tied to the same declared standard, test method, specimen conditioning, and units. Similar trade names do not by themselves prove equivalent performance.
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Epoxy Fiberglass Sheets
3240 epoxy glass sheet, G10, G11, and FR-4 grades for electrical insulation and structural applications.
Product comparison
| Product | Application overview | Process capabilities |
|---|---|---|
| 3240 Epoxy Glass Fiber Sheet | General-purpose epoxy fiberglass insulation sheet with strong mechanical performance and stable electrical behavior under medium to higher temperature conditions. | |
| EPGC Laminates | IEC-style epoxy glass laminate grades for international material matching, technical replacement and export communication with industrial buyers. | |
| FR-4 / FR-5 Epoxy Glass Sheet | Flame-retardant epoxy glass sheet for electrical insulation structures, higher thermal reliability and demanding industrial environments. | |
| G10 / G11 Epoxy Glass Sheet | High-strength epoxy glass laminate family for demanding electrical insulation, structural support and elevated-temperature service conditions. |
Category overview
3240 epoxy glass sheet, G10, G11, and FR-4 grades for electrical insulation and structural applications.
Selection guide
Buyer questions to resolve before quotation
Which application conditions should be defined first?
State the operating temperature, electrical duty, mechanical load, flame-retardance requirement, environment, machining needs, and any governing customer or industry standard.
What information is needed for a material quotation?
Provide the required grade or reference standard, thickness, sheet or machined-part dimensions, color, quantity, tolerances, test report needs, destination, and intended application.
Which evidence should be checked before substitution?
Review the current technical data sheet, test methods and values, certificate or batch-document scope, sample approval, and any customer-specific qualification before approving an alternative grade.
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