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FR4 is a glass fiber-reinforced composite material that combines excellent electrical insulation properties, reliable flame retardancy, and good dimensional stability. It is suitable for manufacturing insulating boards and structural support components in the electronics and electrical industries.
priceRating
★★★★★
machinability
poor
wallThickness
≥ 1.0 mm
tolerance
±0.01 mm–±0.05 mm
Description
Electrical insulation parts, PCB substrates, insulating structural components
FR4 can undergo surface treatments such as electroplated gold, hot dip tinning, and other processes.
Moderate heat resistance and moisture resistance, limited toughness, and relatively high brittleness.
Select from our full range of materials for your application.
FR4 is a glass fiber-reinforced composite material that combines excellent electrical insulation, reliable flame retardancy, and good dimensional stability, making it the material of choice for consumer electronics, industrial equipment, and communication hardware.
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From material selection to machining capability — supporting reliable CNC FR4 parts production.
FR4 is a fiberglass-reinforced composite based on epoxy resin. It offers excellent electrical insulation and reliable flame resistance, making it suitable for electronic, electrical, and fire-resistant applications. The material also provides good dimensional stability with minimal deformation during machining and use. However, due to its limited toughness and relatively high brittleness, FR4 is prone to fracture under impact or complex loading and is therefore not typically used as a primary load-bearing structural material.
Xmake not only possesses mature metal processing capabilities but also supports precision machining of various engineering plastics. Backed by advanced CNC equipment and a stable process system, we efficiently fulfill cutting, milling, and drilling requirements for FR-4 materials, suitable for manufacturing insulating sheets and structural support components. We provide full-process manufacturing services spanning prototype validation, small-batch trial production, and mass production, ensuring consistent and reliable performance, structural integrity, and machining consistency across different materials.
Have more questions? Our engineering team is ready to help you find the right solution.
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