FR-4 (Glass Epoxy Laminate) vs PA66 GF30: 0% composition overlap. Significantly different materials serving different application areas.
FR-4 (Glass Epoxy Laminate) vs PA66 GF30
Side-by-side chemical composition and mechanical property comparison.
Overview
FR-4 (Glass Epoxy Laminate)
Flame retardant woven fiberglass cloth with epoxy resin binder — the worldwide standard substrate material for printed circuit boards (PCBs). Designated NEMA grade FR-4 and IPC-4101. Good mechanical strength, dimensional stability and electrical insulation up to 130°C (Tg). Dielectric constant 4.2–4.7 at 1 MHz. Self-extinguishing (UL94 V-0). Used for single/multilayer PCBs, electrical insulation boards, structural composites in electronics, test fixtures and jigs. Available in thicknesses 0.1–50 mm.
PA66 GF30
Polyamide 66 with 30% short glass fiber — stronger and more heat-resistant than PA6 GF30 due to higher-Tm base polymer. UTS ~190 MPa dry, HDT ~250°C. THE automotive under-hood material for structural brackets. Trade names include Ultramid A3WG6 (BASF), Zytel 70G30 (DuPont), Durethan AKV 30 (LANXESS), Technyl A218 V30 (Domo). Used for engine brackets, radiator end tanks, air intake manifolds, and electrical connectors.
| FR-4 (Glass Epoxy Laminate) | PA66 GF30 | |
|---|---|---|
| Material Number | — | — |
| Category | Polymers | Polymers |
| Standard | IPC-4101 | ISO 10350 |
Chemical composition (wt%) — Pro
| Element | FR-4 (Glass Epoxy Laminate) | PA66 GF30 | Overlap |
|---|---|---|---|
| Epoxy Resin Matrix | 35–45% | — | — |
| Glass Fiber (E-Glass) Cloth | 55–65% | — | — |
| Polyamide 66 (Base Polymer) | — | 68–72% | — |
| Glass Fiber Reinforcement | — | 28–32% | — |
Mechanical properties — Pro
| Property | FR-4 (Glass Epoxy Laminate) | PA66 GF30 | Unit |
|---|---|---|---|
| Flexural Strength | 380–480 | — | MPa |
| Tensile Strength | 280–340 | 170–195 | MPa |
| Compressive Strength | 350–420 | — | MPa |
| Density | |||
| Glass Transition Temp (Tg) | |||
| Dielectric Constant (1MHz) | |||
| Dielectric Strength | |||
| UL94 Flammability | |||
| Water Absorption (24h) | |||
| Tensile Strength | |||
| Elongation | |||
| Elastic Modulus | |||
| Density | |||
| hdt_1_8mpa | |||
| Melting Point | |||
| Tensile Modulus | |||
| Elongation at Break | |||
| Charpy Impact (notched) | |||
| Melting Point | |||
| HDT/A (1.8 MPa) | |||
| Glass Fiber Content |
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FR-4 (Glass Epoxy Laminate) and PA66 GF30 have significantly different compositions (0% overlap). These materials are not interchangeable and serve different application areas.
Automated assessment based on composition analysis
Frequently Asked Questions
Is FR-4 (Glass Epoxy Laminate) the same as PA66 GF30?
FR-4 (Glass Epoxy Laminate) and PA66 GF30 have a 0% composition overlap. They are generally not directly interchangeable.
Can I replace FR-4 (Glass Epoxy Laminate) with PA66 GF30?
Generally not recommended. The compositions differ significantly (0% overlap). These materials have different alloying concepts and are intended for different applications.
What is the difference between FR-4 (Glass Epoxy Laminate) and PA66 GF30?
The main differences are in the following elements: overall alloying content. FR-4 (Glass Epoxy Laminate) is a Polymers grade, while PA66 GF30 is a Polymers grade.
Related Comparisons
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Data provided for reference only. Always verify against the applicable specification for critical applications.
All data is for reference only. Equivalents indicate similarity, not identity. Always verify against the applicable specification for safety-critical applications. materialref.com accepts no liability for decisions based on this data.