Fr4 Fiberglass Rod, High Strength and Flame Retardant, for Electrical Insulators and Switchgear, Precision Machined by Professional Composite Supplier

Product Description

FR4 / G10 Fiberglass Rod – High-Strength Electrical Insulation & Structural Composite

Manufactured by Youda Insulation Materials Co., Ltd.

Precision Engineered | Customizable | Global Export Ready

Product Introduction

The FR4 and G10 fiberglass rods are high-performance thermoset composite materials made from woven E-glass fabric impregnated with epoxy resin. These rods deliver exceptional mechanical strength, dimensional stability, and outstanding electrical insulation—making them ideal for demanding applications in electrical engineering, automation, aerospace, semiconductor fixtures, and industrial machinery.

    ·    FR4: Flame-retardant (UL94 V-0), preferred for safety-critical electrical components.
    ·    G10: Slightly higher mechanical strength, ideal for structural parts where fire rating is not required.
Both materials are non-conductive, non-magnetic, chemically resistant, and maintain performance across extreme temperatures.

Product Specifications

Property	FR4 Rod	G10 Rod
Base Material	Woven E-glass + flame-retardant epoxy	Woven E-glass + high-strength epoxy
Color	Amber/Brown (standard)	Green, Black, or Amber
Diameter Range	2 mm – 100 mm	2 mm – 100 mm
Standard Length	1000 mm (custom lengths available)	1000 mm
Diameter Tolerance	±0.05 mm (precision ground)	±0.05 mm
Density	1.85–2.0 g/cm³	1.85–2.0 g/cm³
Water Absorption (24h)	≤ 0.15%	≤ 0.12%
Flexural Strength	≥ 400 MPa	≥ 450 MPa
Tensile Strength	≥ 350 MPa	≥ 380 MPa
Compressive Strength	≥ 300 MPa	≥ 320 MPa
Dielectric Strength	≥ 20 kV/mm	≥ 22 kV/mm
Volume Resistivity	>1.0 × 10¹³ Ω·cm	>1.0 × 10^14 Ω·cm
Surface Resistivity	>1.0 × 10¹³ Ω/sq	>1.0 × 10^14 Ω/sq
Arc Resistance	≥ 180 sec	≥ 120 sec
Operating Temperature	-50°C to +140°C (short-term up to 180°C)	-50°C to +150°C (short-term up to 200°C)
Flame Rating	UL94 V-0	Non-flame retardant
Machinability	Excellent – compatible with CNC, drilling, turning, milling	Same as FR4

Note: All dimensions and tolerances can be customized per customer drawings or requirements.

Product Advantages & Manufacturer Strengths

Key Product Advantages
  → Superior Electrical Insulation: Ideal for high-voltage components and insulating sleeves.
  → High Mechanical Strength: Maintains structural integrity under load and vibration.
  → Thermal Stability: Performs reliably across wide temperature ranges without warping.
  → Chemical Resistance: Resists oils, solvents, acids, and alkalis commonly found in industrial settings.
  → Dimensional Accuracy: Low moisture absorption ensures consistent size and shape over time.
  → asy to Machine: Compatible with standard metalworking tools for precision fabrication.
Why Choose Youda Insulation Materials Co., Ltd.?
  → 35+ Years of Manufacturing Expertise: Specializing in high-performance FR4 laminates and tubes.
  → In-House R&D & QC Lab: Ensures consistent quality and rapid prototyping capability.
  → Customization Support: From small-batch prototypes to large-volume production, we tailor solutions to your exact specs.
  → Global Export Experience: Products shipped to Europe, North America, Southeast Asia, and beyond.
  → Responsive Technical Service: Dedicated engineers provide material selection and application guidance.

Product Showcase

Key Advantages

Product Benefits
 · Superior Electrical Insulation: Ideal for high-voltage bushings, coil bobbins, and terminal supports.
 · High Mechanical Strength: Resists deformation under load, vibration, or impact.
 · Thermal & Dimensional Stability: Minimal expansion/contraction ensures long-term reliability.
 · Chemical Resistance: Withstands oils, solvents, weak acids, and cleaning agents.
 · Easy to Machine: Can be precision-machined using standard carbide tools—no special equipment needed.

Why Choose Youda Insulation Materials Co., Ltd.?
 · 35+ Years of Expertise: Specializing in FR4/G10 laminates, rods, tubes, and custom composites.
 · In-House Production Control: From raw material selection to final inspection—full traceability.
 · Global Customer Base: Trusted by clients in USA, Germany, Japan, India, and Southeast Asia.
 · Rapid Prototyping & Custom Solutions: From sample to mass production in record time.
 · Technical Support Team: Engineers ready to assist with material selection, design optimization, and DFM advice.

Product Components

Product Applications

Common uses include:

 · Insulating standoffs and spacers in switchgear & transformers
 · PCB test fixtures and semiconductor handling tools
 · Robotic arms and automation guide rods
 · Coil bobbins, motor end caps, and brush holders
 · Aerospace brackets and rail transit insulators

Company Introduction

FAQ

Q1: What's the difference between FR4 and G10 rods?
A: Both offer similar mechanical and electrical properties. The key difference is that FR4 is flame-retardant (UL94 V-0), while G10 is not. G10 typically has slightly higher flexural and tensile strength. Choose FR4 for electrical safety compliance; choose G10 for pure structural performance.

Q2: Can I machine FR4/G10 rods myself?
A: Yes! They are highly machinable using standard metalworking tools (carbide-tipped recommended). Use dust extraction during cutting/grinding—fine glass particles require proper ventilation.

Q3: What's the maximum continuous operating temperature?
A: FR4: up to 140°C continuously (180°C short-term). G10: up to 150°C continuously (200°C short-term).

Q4: Do you offer rods with very tight tolerances?
A: Absolutely. We provide centerless-ground rods with tolerance as tight as ±0.02 mm for precision applications like semiconductor or medical devices.

Q5: How do I select the right diameter and length for my project?
A: Consider your voltage level, mechanical load, space constraints, and assembly method. Share your drawing or requirements—we'll recommend the optimal size and material grade.

Q6: Can I get samples before placing a bulk order?
A: Yes. We offer free or low-cost samples (shipping cost may apply) so you can verify color, texture, and machinability.

Q7: What's the lead time for custom rods?
A: Standard sizes: 3–7 days. Custom diameters, lengths, or precision grinding: 10–15 working days. Urgent orders? Ask about our expedited service.

Q8: Are FR4/G10 rods suitable for outdoor use?
A: They perform well in humid environments due to very low moisture absorption (<0.15%). However, prolonged UV exposure may cause surface discoloration—consider protective coating if used outdoors long-term.