PA6-GF15 vs PA66 (Nylon 66): 0% composition overlap. Significantly different materials serving different application areas.
PA6-GF15 vs PA66 (Nylon 66)
Side-by-side chemical composition and mechanical property comparison.
Overview
PA6-GF15
Polyamide 6 with 15% short glass fiber reinforcement — moderate stiffness increase (E-Mod ~5.5 GPa vs 2.7 unfilled) while retaining good impact strength and elongation. Better toughness than higher-filled grades (GF30, GF50). Trade names: Ultramid B3EG3 (BASF), Zytel 73G15 (DuPont). Used for structural clips, housings, brackets, and under-hood automotive parts where moderate stiffness with good impact is needed.
PA66 (Nylon 66)
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.
| PA6-GF15 | PA66 (Nylon 66) | |
|---|---|---|
| Material Number | — | — |
| Category | Polymers | Polymers |
| Standard | ISO 527-1 | ISO 10350 |
Chemical composition (wt%) — Pro
| Element | PA6-GF15 | PA66 (Nylon 66) | Overlap |
|---|---|---|---|
| Polycaprolactam (PA6 base) | 82–87% | — | — |
| Glass Fiber (short) | 13–17% | — | — |
| Hexamethylenediamine unit | — | 45–55% | — |
| Adipic Acid unit | — | 45–55% | — |
Mechanical properties — Pro
| Property | PA6-GF15 | PA66 (Nylon 66) | Unit |
|---|---|---|---|
| Tensile Strength | 100–115 | 80–90 | MPa |
| Elongation | 4–6 | 15–40 | % |
| Elastic Modulus | 5000–6000 | 3–3.2 | MPa |
| Density | |||
| Yield Strength | |||
| Melting Point | |||
| Glass Transition Temp (Tg) | |||
| Water Absorption (24h) | |||
| Tensile Strength | |||
| Tensile Modulus | |||
| Elongation at Break | |||
| Charpy Impact (notched) | |||
| Density | |||
| Melting Point | |||
| Glass Transition Temp | |||
| Water Absorption (24h) | |||
| Water Absorption (saturation) |
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PA6-GF15 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 PA6-GF15 the same as PA66 (Nylon 66)?
PA6-GF15 and PA66 (Nylon 66) have a 0% composition overlap. They are generally not directly interchangeable.
Can I replace PA6-GF15 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 PA6-GF15 and PA66 (Nylon 66)?
The main differences are in the following elements: overall alloying content. PA6-GF15 is a Polymers grade, while PA66 (Nylon 66) 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.