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MC Nylon, PA6 and PA66 Explained in One Shot: A Quick‑Fire Comparison
2025-07-28
Introduction
A single purchasing list often shows PA6, PA66 and MC Nylon—yet the quotes can be worlds apart. They all belong to the nylon family, so which one fits your project? The answer is just one table and four scenarios away.
1 Names & Basic Concepts
Polyamide (Nylon) is the umbrella term.
PA6 & PA66 – injection‑moulded nylons found in gears and home‑appliance housings.
MC Nylon – a casting nylon, star of large guides and heavy‑duty bushings.
2 Key Performance Comparison
| Property | PA6 | PA66 | MC Nylon |
|---|---|---|---|
| Density (g/cm³) | 1.14 | 1.15 | 1.15 |
| Continuous Service Temp (°C) | 105 | 110 | 120 |
| Impact Strength (kJ/m²) | 35 | 30 | 60 |
| Material Cost* | ★ | ★★ | ★★☆ |
Takeaway: MC Nylon tops the chart in heat resistance and impact strength, while its cost sits between PA6 and PA66.
3 Processing & Size Freedom
PA6 / PA66 – fast injection cycles, perfect for small‑to‑medium parts (0.1–500 g) in high volumes.
MC Nylon – cast in a single shot up to 1 m or more, giving you large, stress‑free parts without welding or bolting.
For “big size + low stress” requirements, MC Nylon wins hands down.
4 Scenario Quick Picks
| Scenario | Best Choice | Why |
|---|---|---|
| Domestic‑appliance gears | PA6 | Small size, high volume, sharp cost targets |
| Pump wear rings > 110 °C | MC Nylon | Continuous 120 °C margin delivers safety |
| Precision electrical connectors | PA66 | Higher rigidity and dimensional stability |
| Heavy‑duty guides + weight savings | MC Nylon | High impact strength, low density, no joints |
5 Cost vs. Value Reminder
Raw material price is just the tip of the iceberg. Add machining, maintenance and downtime, and your Total Cost = Material + Processing + Upkeep. In high‑impact, large‑part applications, MC Nylon’s long life and joint‑free build often make it the cheaper choice overall.
Conclusion & Call to Action
TL;DR: PA6 = economical / high‑volume, PA66 = rigid / slightly higher heat, MC Nylon = large parts / high impact / superior wear.
Still undecided? Contact us now for free samples and get a personalised material‑selection report within 24 hours!
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