PA6-GF15 vs PA66 GF15: 100% composition overlap. Very similar materials, likely interchangeable for most applications.
PA6-GF15 vs PA66 GF15
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 GF15
PA66 with 15% short glass fiber — light reinforcement giving a good balance of increased stiffness and retained toughness. Less brittle than GF30/GF50 variants (El ~5% vs 3%). E-Mod ~6 GPa (vs 3 unfilled, 9.5 GF30). Trade names: Ultramid A3EG3 (BASF), Zytel 70G15 (DuPont). Used for structural clips, cable ties, fan shrouds, and housings where moderate stiffness increase is needed without sacrificing too much impact resistance.
| PA6-GF15 | PA66 GF15 | |
|---|---|---|
| Material Number | — | — |
| Category | Polymers | Polymers |
| Standard | ISO 527-1 | ISO 527-1 |
Chemical composition (wt%) — Pro
| Element | PA6-GF15 | PA66 GF15 | Overlap |
|---|---|---|---|
| Polycaprolactam (PA6 base) | 82–87% | — | — |
| Glass Fiber (short) | 13–17% | 13–17% | OK |
| PA66 base polymer | — | 82–87% | — |
Mechanical properties — Pro
| Property | PA6-GF15 | PA66 GF15 | Unit |
|---|---|---|---|
| Tensile Strength | 100–115 | 120–140 | MPa |
| Elongation | 4–6 | 4–6 | % |
| Elastic Modulus | 5000–6000 | 5500–6500 | MPa |
| Density |
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PA6-GF15 and PA66 GF15 have very similar compositions (100% overlap) and are likely interchangeable for most applications. Verify mechanical properties for your specific use case.
Automated assessment based on composition analysis
Frequently Asked Questions
Is PA6-GF15 the same as PA66 GF15?
PA6-GF15 and PA66 GF15 have a 100% composition overlap. For most purposes, they can be considered similar.
Can I replace PA6-GF15 with PA66 GF15?
In many cases, yes. The compositions overlap significantly (100%). However, always verify mechanical property requirements and heat treatment compatibility for your specific application.
What is the difference between PA6-GF15 and PA66 GF15?
The main differences are in the following elements: overall alloying content. PA6-GF15 is a Polymers grade, while PA66 GF15 is a Polymers grade.
View full data for each material:
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.