G10 & FR-4.
Glass-epoxy laminate.
PCB substrate.
G10 and FR-4 — glass-fiber epoxy laminate. PCB substrate, electrical insulation, structural composites. Standard for printed circuit boards. CNC machinable.
Key principles.
Glass + epoxy
Woven glass cloth + epoxy resin. Layers laminated under pressure.
Flame retardancy
G10 standard. FR-4 flame-retardant (UL94 V-0). FR-4 preferred for electronics.
UTS 350 MPa
High strength + electrical insulation. Better than typical plastic.
Insulator
Dielectric strength 30 kV/mm. Standard PCB insulator.
Glass-fiber abrasive
Cuts hard tool wear. Sharp tools, slow speeds, dust extraction.
Mid-priced
~$10-20/kg sheet stock. Premium over commodity plastics.
FAQ
G10 vs FR-4 differences?
FR-4 has flame-retardant additives (bromine). UL94 V-0. Used for PCBs. G10 mechanical similar but flammable.
Machining tips?
Carbide tools (glass dulls steel quickly). Slow speeds, light depths. Dust extraction (silica).
Major applications?
PCB substrates (FR-4 dominant). Electrical insulator (G10/FR-4). Composite structural parts.
Drilling holes?
Diamond-coated drills last longer than carbide. Slow speeds. Peck drilling for deep holes.
Cosmetic considerations?
Natural color light tan/green. Limited surface finish options. Painted or laminated for cosmetic.
Health hazards?
Glass fiber dust harmful — wear respiratory protection. Standard PPE for machining.
Get an instant quote
Send your CAD — we reply with detailed pricing, lead time, and DFM feedback within 4 working hours.
Start quoteTalk to an engineer
WhatsApp our team directly. Most messages answered within 12 minutes during work hours.
Open WhatsAppExplore all services
CNC, 3D printing, injection molding, sheet metal, casting, finishing — one quality system, one partner.
See all services