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Precision Machining of FR-4 & G-10 Epoxy Glass Fiber Composites
Custom FR-4 & G10 Fiberglass Epoxy Sheet CNC Machining Services
Precision CNC machining of glass fiber reinforced epoxy laminates for PCB test fixtures, ICT bed of nails fixtures, wave solder pallets, high-voltage insulators, and semiconductor handling equipment. UL 94 V-0 flame retardant materials with third-party test reports available.
Frustrated With Your Current FR-4/G10 Fiberglass Machining Supplier?
Engineers and procurement managers sourcing custom epoxy glass laminate parts often face these common challenges with traditional suppliers.
High MOQ Requirements
Most fiberglass epoxy machining suppliers require 100+ piece minimums, making prototype development and small batch production of glass fiber reinforced plastic parts expensive. We accept orders from just 1 piece β ideal for R&D, engineering samples, and low-volume production of garolite components.
Long Lead Times
Waiting 3-4 weeks for custom FR-4 epoxy fiberglass parts delays your entire PCB test fixture or electrical insulation project timeline. Our standard turnaround is 5-7 business days, with expedited service available for urgent glass epoxy composite requirements.
Delamination & Quality Issues
Fiberglass cloth layers separating, chipped edges, and fiber pullout on machined phenolic laminate parts waste your time and budget. Our diamond-coated tooling and controlled parameters ensure clean edges, no delamination, and consistent tolerances across all epoxy glass cloth laminate machining.
Missing Documentation
Many G10 garolite suppliers cannot provide UL flame ratings, material test reports, or substance testing documentation required for electronics manufacturing compliance. We provide SGS and CNAS laboratory test reports verifying material properties and restricted substance testing.
Poor Technical Communication
Unresponsive suppliers and language barriers cause confusion, design errors, and delays on precision GFRP components. Our engineering team responds within hours with technical expertise in composite material machining and clear communication in English.
Hidden Costs & Fees
Setup fees, tooling charges, and unexpected shipping costs on glass fiber epoxy board orders blow your procurement budget. Our quotes include all costs upfront β free standard shipping to select regions with transparent pricing.*
What Are FR-4 & G10 Fiberglass Epoxy Laminates?
FR-4 and G10 are high-performance thermoset composite laminates consisting of woven E-glass fabric (fiberglass cloth) impregnated with epoxy resin binder. These glass fiber reinforced plastic (GFRP) materials are also known as garolite, epoxy glass laminate, glass epoxy composite, or fiberglass epoxy board β all referring to the same category of electrical-grade laminated insulation materials.
Unlike thermoplastics such as Nylon, POM (Delrin), or ABS, FR-4 and G10 epoxy glass cloth laminates cannot be melted and re-molded. This thermoset nature provides exceptional dimensional stability, chemical resistance, and mechanical strength retention at elevated temperatures up to 170-180Β°C continuous operation β critical for wave solder pallets, burn-in boards, and high-temperature electrical insulation applications.
Key Material Distinction: FR-4 contains flame-retardant brominated compounds achieving UL 94 V-0 rating (self-extinguishing within 10 seconds). G10 uses the same woven fiberglass + epoxy construction without flame retardants, resulting in 10-15% higher mechanical strength but only UL 94 HB rating. FR-4 can substitute G10 in most applications, but G10 cannot replace FR-4 where fire safety codes apply.
Our precision CNC machining services transform raw FR-4 and G10 sheets into custom components for electronics testing, PCB assembly tooling, semiconductor manufacturing, electrical power equipment, and industrial automation applications.
FR-4 vs G10 Garolite: Choose The Right Fiberglass Epoxy Laminate
Both FR-4 and G10 are woven glass cloth epoxy laminates with similar properties, but they serve different engineering requirements. Understanding the differences helps you select the optimal glass fiber reinforced material for your custom precision parts.
FR-4 Epoxy Glass Laminate
Flame Retardant Grade | NEMA FR-4 | UL 94 V-0
FR-4 is a woven fiberglass fabric with epoxy resin binder containing brominated flame retardant compounds. Achieves UL 94 V-0 rating β self-extinguishes within 10 seconds when flame source is removed. The global standard material for PCB substrates, ICT test fixture bases, functional test fixtures, and applications requiring fire safety compliance in electronics manufacturing.
G10 Garolite Epoxy Laminate
High-Strength Grade | NEMA G-10 | Maximum Mechanical Performance
G10 uses identical woven fiberglass + epoxy construction but without flame retardant additives. This results in 10-15% higher mechanical strength and slightly better moisture resistance. Preferred for structural brackets, high-load bearing components, knife handles, and environments where fire codes don't mandate flame retardancy but maximum strength is required.
β οΈ Critical Material Substitution Rule for Engineers
FR-4 can replace G10 in most applications since it meets all G10 mechanical specifications plus adds flame retardancy. However, G10 cannot replace FR-4 in applications where UL 94 V-0 flame rating is required by safety codes, product certifications (UL, CE), or insurance requirements. Many suppliers incorrectly use these NEMA grade terms interchangeably β always verify the actual UL flame rating on material test certificates when fire safety matters for your PCB test equipment, electrical switchgear, or transformer insulation applications.
Complete FR-4 vs G10 Fiberglass Epoxy Properties Comparison
Detailed technical specifications from certified laboratory testing per international standards (GB/T 1303, IEC 62321, UL 94). Material test reports available upon request for all glass epoxy laminate orders.
| Property | FR-4 Epoxy Glass Specification | G10 Garolite Specification | Application Impact |
|---|---|---|---|
| Flame Retardancy (UL 94) | V-0 (Self-Extinguishing) | HB (Horizontal Burn) | FR-4 required for UL/CE compliance in electronics |
| Flexural Strength (Bending) | 340-382 MPa | 380-450 MPa | G10 better for structural load-bearing components |
| Tensile Strength | β₯300 MPa | β₯345 MPa | G10 15% higher tensile for mechanical fixtures |
| Continuous Operating Temp | 170Β°C | 180Β°C | Both excellent for wave solder pallet applications |
| Glass Transition Temperature (Tg) | 130-140Β°C | 140-150Β°C | G10 maintains rigidity at higher temperatures |
| Water Absorption (24h) | <0.15% | <0.10% | Both low absorption for electrical insulation |
| Density | 1.9-2.1 g/cmΒ³ | 1.8-2.0 g/cmΒ³ | Nearly identical weight for fixture design |
| Dielectric Strength | β₯16.5 kV/mm | β₯18 kV/mm | Both excellent for high-voltage insulation |
| Volume Resistivity | 10¹ⴠΩ·cm | 10¹ⴠΩ·cm | Identical electrical insulation performance |
| Dielectric Constant (1MHz) | 4.5 | 4.4 | Similar RF/microwave properties |
| CNC Machinability | Excellent | Excellent | Both machine well with diamond tooling |
| Achievable Tolerance | Β±0.03mm | Β±0.03mm | Same precision capability for test fixtures |
| Restricted Substance Testing | Available (SGS/CNAS) | Available (SGS/CNAS) | Test reports meet electronics industry requirements |
FR-4 & G10 Fiberglass Epoxy CNC Machining Services
Complete in-house CNC machining capabilities with specialized equipment and diamond-coated carbide tooling optimized for glass fiber reinforced epoxy composite materials.
CNC Milling & Routing
3, 4, and 5-axis CNC machining centers with high-speed spindles (24,000 RPM) and diamond-coated carbide tooling. Complex 2D profiles, 3D contours, pockets, and cavities with clean edges and no fiber pullout or delamination on fiberglass epoxy parts.
View CNC Milling Services βPrecision Drilling & CNC Turning
High-speed micro-drilling down to Γ0.8mm with Β±0.03mm hole positioning accuracy for ICT bed of nails test fixtures. CNC turning for insulating bushings, spacers, standoffs, and cylindrical components from solid FR-4/G10 rods.
View CNC Turning Services βLaser Engraving & Marking
CO2 laser systems for part number engraving, alignment marks, fiducials, and identification on FR-4 test fixtures and garolite components. Permanent markings for traceability in electronics manufacturing and PCB assembly tooling.
View Laser Services βCut-to-Size Panel Sawing
Precision panel cutting from stock fiberglass epoxy sheets up to 1030Γ2030mm. Custom blanks and oversized glass fiber reinforced plastic panels cut to your specifications with clean, square edges ready for secondary machining operations.
View Cutting Services βThreading & Insert Installation
Tapped holes M2-M20 metric and imperial threads. Brass, stainless steel, and heat-set threaded insert installation for enhanced pull-out strength in high-cycle test fixture applications. Essential for ICT and functional test jig assemblies.
View Fixture Services βAssembly & Secondary Operations
Complete finishing including edge chamfering, deburring, surface polishing, threaded insert installation, hardware assembly, and custom sub-assemblies. Plastic welding and thermal forming capabilities also available.
View All CNC Services βWhere FR-4/G10 CNC Machined Fiberglass Parts Are Used
Our precision glass epoxy laminate components serve critical applications across electronics testing, PCB assembly, semiconductor manufacturing, electrical power equipment, and industrial automation industries.
PCB Test Fixtures & ICT Bed of Nails
Custom ICT in-circuit test fixtures, functional test fixtures (FCT/FVT), bed of nails probe fixtures, burn-in boards, flying probe adapter plates, and ATE (automatic test equipment) interface fixtures. FR-4's dimensional stability ensures consistent probe alignment across thousands of test cycles in high-volume electronics manufacturing.
Wave Solder Pallets & SMT Carriers
High-Tg FR-4 wave solder pallets, selective solder fixtures, SMT reflow carriers, through-hole component protection masks, and PCB assembly tooling. Glass epoxy laminates withstand repeated thermal cycling through solder wave (260Β°C peak) without warping, protecting sensitive SMD components during through-hole soldering processes.
High-Voltage Electrical Insulation
Transformer spacers, bus bar supports, high-voltage standoffs, arc shields, switchgear insulators, motor slot wedges, generator insulation, and electrical isolation barriers. FR-4's UL 94 V-0 flame rating and excellent dielectric strength (β₯16.5 kV/mm) ensure fire safety compliance in power distribution equipment.
Semiconductor & Wafer Handling
Probe card stiffener rings, wafer handling end effectors, vacuum chuck insulation plates, chip carriers, cleanroom-compatible handling tools, and semiconductor test sockets. Non-contaminating, dimensionally stable fiberglass epoxy components meet fab environment requirements for precision wafer processing equipment.
Industrial Automation & Robotics
Sensor mounting brackets, encoder isolation plates, pneumatic manifold insulators, robot gripper end effectors, servo motor isolation components, and positioning fixtures. High flexural strength G10 withstands industrial vibration while providing electrical isolation between sensors and metal structures.
Laboratory & Scientific Instruments
Custom sample holders, optical component mounts, microscopy stage inserts, electrode holders, analytical equipment fixtures, spectrometer components, and research apparatus. FR-4 and G10's excellent machinability enables complex geometries with tight tolerances for precision scientific instrumentation.
FR-4/G10 CNC Machined Fiberglass Epoxy Parts Gallery
Browse examples of precision glass fiber reinforced epoxy components manufactured for electronics, semiconductor, and industrial customers worldwide.
Simple 5-Step Custom Fiberglass Machining Process
From your CAD design files to delivered precision FR-4 and G10 parts β fast turnaround and exceptional quality guaranteed.
Submit Design Files
Upload CAD files (STEP, DXF, DWG, IGES, SolidWorks) or technical drawings with dimensions and tolerances
Receive Quote & DFM
Detailed quotation within 24 hours including free Design for Manufacturability analysis and optimization recommendations
Confirm Order
Approve quote, select material grade (FR-4 or G10), confirm color requirement, and production schedule
CNC Production
Precision CNC machining with 100% dimensional inspection and complete quality documentation
Delivery
Professional packaging with free standard shipping to select regions and online tracking*
The BeePlastic Fiberglass Machining Advantage
What sets us apart from other FR-4/G10 CNC machining and glass epoxy laminate fabrication suppliers.
No Minimum Order Quantity
Order from just 1 piece for prototype ICT fixtures or engineering samples, up to 10,000+ pieces for production PCB test equipment. Perfect for R&D, functional testing, replacement parts, and low-volume specialized glass epoxy components.
Fast 5-7 Day Standard Lead Time
Most FR-4/G10 machined fiberglass epoxy parts ship within one week. Expedited service available for urgent test fixture or solder pallet requirements β customer pays expedited shipping costs.*
Β±0.03mm Precision Tolerances
100% dimensional inspection of every glass fiber reinforced part. First article reports available for production orders. Material test reports and traceability documentation included with every shipment at no additional charge.
Free Standard Shipping*
Free standard shipping to select regions worldwide. Express/expedited shipping available at customer cost for urgent fiberglass part deliveries. Professional packaging ensures parts arrive safely.*
Expert Engineering Support
Free DFM review and fiberglass material selection guidance from our engineering team. Direct technical consultation for ICT fixture design, solder pallet optimization, and electrical insulation material selection.
Complete Fabrication Services
Beyond FR-4/G10 CNC machining: laser cutting/engraving, plastic welding, thermal bending, injection molding. One-stop composite and plastic fabrication partner.
FR-4 & G10 Fiberglass Epoxy Laminate: The Complete Guide for Engineers
FR-4 (Flame Retardant Grade 4) and G10 (Garolite Grade 10) are the most widely used glass fiber reinforced epoxy laminates in the electronics, electrical, and industrial sectors. These NEMA-grade thermoset composite materials combine woven E-glass fabric (fiberglass cloth) with epoxy resin to create exceptional electrical insulation, mechanical strength, and dimensional stability. Also known as epoxy glass laminate, glass epoxy composite, fiberglass epoxy board, GFRP (glass fiber reinforced plastic), or garolite, these materials are essential for manufacturing PCB test fixtures, ICT bed of nails fixtures, wave solder pallets, SMT carriers, high-voltage insulators, and precision mechanical components.
The key difference between FR-4 and G10 lies in flame retardancy: FR-4 contains brominated flame retardant compounds achieving UL 94 V-0 self-extinguishing rating, while G10 offers approximately 10-15% higher mechanical strength without flame retardants (UL 94 HB rating). For applications requiring fire safety complianceβincluding electronics manufacturing, switchgear, transformers, and aerospaceβFR-4 is the standard specification. G10 excels in purely mechanical applications where maximum strength and stiffness are prioritized over flame resistance.
Common FR-4/G10 Applications
- ICT In-Circuit Test Fixtures & Bed of Nails Probes
- Functional Test Fixtures (FCT/FVT)
- Wave Solder Pallets & Selective Solder Fixtures
- SMT Reflow Carriers & PCB Assembly Tooling
- Burn-in Board Substrates & ATE Interface Plates
- Probe Card Stiffener Rings
- Transformer Spacers & Coil Forms
- High-Voltage Bus Bar Supports
- Switchgear Insulators & Arc Shields
- Motor Slot Wedges & Generator Insulation
- Semiconductor Wafer Handling End Effectors
- Industrial Sensor Mounting Brackets
Key Material Properties & Benefits
- Excellent Electrical Insulation (β₯16.5 kV/mm dielectric strength)
- High Volume Resistivity (10¹ⴠΩ·cm)
- UL 94 V-0 Flame Retardancy (FR-4)
- High Flexural Strength (340-450 MPa)
- Excellent Dimensional Stability
- Low Moisture Absorption (<0.15%)
- Continuous Operating Temperature to 170-180Β°C
- Glass Transition Tg 130-150Β°C
- Good Chemical Resistance
- Excellent CNC Machinability
- Non-Magnetic Properties
- Low Thermal Expansion
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FR-4/G10 Fiberglass Epoxy CNC Machining FAQ
Expert answers to common questions about glass epoxy laminate materials, CNC machining capabilities, and ordering custom garolite parts.
What is the difference between FR-4 and G10 fiberglass epoxy laminate?
What colors of FR-4 and G10 fiberglass sheets do you stock?
What CNC machining tolerances can you achieve on FR-4/G10 parts?
Is there a minimum order quantity (MOQ) for FR-4/G10 machining?
Do you provide material test reports and quality documentation?
How much does custom FR-4/G10 CNC machining cost?
What is your standard lead time for FR-4/G10 machined parts?
Can you machine thin FR-4 sheets without delamination?
What CAD file formats do you accept for FR-4/G10 machining quotes?
Can you install threaded inserts in FR-4 fiberglass parts?
Ready to Start Your FR-4/G10 Fiberglass CNC Machining Project?
Upload your design files today for a free quote and expert DFM analysis. Our engineering team is ready to help you select the optimal glass epoxy laminate material and deliver precision-machined ICT fixtures, solder pallets, electrical insulators, and custom fiberglass components on time.
*Free standard shipping available to select regions. Express/expedited shipping at customer cost. Contact us for shipping details to your location.
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