Automated comparison · 0% overlap

Epoxy/Carbon Fiber (CFRP) vs PA66 (Nylon 66): 0% composition overlap. Significantly different materials serving different application areas.

Epoxy/Carbon Fiber (CFRP) vs PA66 (Nylon 66)

Side-by-side chemical composition and mechanical property comparison.

Overview

Epoxy/Carbon Fiber (CFRP)

PolymersHigh Performance

Carbon fiber reinforced epoxy — the benchmark structural composite material. Unidirectional ply: tensile strength 1500–2000 MPa, modulus 120–150 GPa at density 1.55 g/cm³ (5x stronger than steel at 1/5 the weight). Quasi-isotropic layup: UTS ~600 MPa, E ~50 GPa. Autoclave-cured prepreg (aerospace) or infusion/RTM (industrial). Used in aerospace primary structures (fuselage, wings), Formula 1 chassis, bicycle frames, wind turbine blades, pressure vessels (Type IV) and high-end sporting goods. Fiber types: T300, T700, T800, M40J, M55J.

PA66 (Nylon 66)

PolymersPolyamide

Polyamide 66 — stiffer and more heat-resistant than PA6. Higher crystallinity gives better creep resistance and ~40°C higher melting point (260°C vs 220°C). Slightly more brittle. More moisture-sensitive at saturation than PA6. Trade names include Ultramid A (BASF), Zytel 101 (DuPont), Tecamid 66 (Ensinger). Dominant in US/UK markets. Used for automotive engine components, electrical connectors, gears, cable ties, and industrial bushings.

	Epoxy/Carbon Fiber (CFRP)	PA66 (Nylon 66)
Material Number	—	—
Category	Polymers	Polymers
Standard	ASTM D3039	ISO 10350

Mechanical properties

Property	Epoxy/Carbon Fiber (CFRP)	PA66 (Nylon 66)	Unit
Tensile Strength	1500–2000	80–90	MPa
Tensile Modulus	120–150	3000–3500	GPa
Density	1.5–1.6	1.13–1.15	g/cm³

Fiber Volume Fraction	55–65	—	%
Glass Transition Temp (Tg)	120–180	—	°C
Interlaminar Shear Strength	50–80	—	MPa
tensile_strength	—	80–90	MPa
yield_strength	—	80–85	MPa
elongation	—	15–40	%
e_modulus	—	3–3.2	GPa
density	—	1.14–1.15	g/cm3
melting_point	—	260–265	°C
glass_transition_temp	—	70–80	°C
water_absorption_24h	—	1–1.3	%
Elongation at Break	—	15–80	%
Charpy Impact (notched)	—	4–6	kJ/m²
Melting Point	—	255–260	°C
Glass Transition Temp	—	55–65	°C
Water Absorption (24h)	—	1–1.5	%
Water Absorption (saturation)	—	7–8.5	%

Compatibility Assessment

Epoxy/Carbon Fiber (CFRP) and PA66 (Nylon 66) 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 Epoxy/Carbon Fiber (CFRP) the same as PA66 (Nylon 66)?

Epoxy/Carbon Fiber (CFRP) and PA66 (Nylon 66) have a 0% composition overlap. They are generally not directly interchangeable.

Can I replace Epoxy/Carbon Fiber (CFRP) with PA66 (Nylon 66)?

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 Epoxy/Carbon Fiber (CFRP) and PA66 (Nylon 66)?

The main differences are in the following elements: overall alloying content. Epoxy/Carbon Fiber (CFRP) is a Polymers grade, while PA66 (Nylon 66) is a Polymers grade.

Related Comparisons

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View full data for each material:

Epoxy/Carbon Fiber (CFRP) details PA66 (Nylon 66) details

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.