# Nylon PA66

> PA6 upgraded: higher stiffness and service temperature for gears and insulators that run hot.

- Category: Engineering Plastics → commodity
- HTML page: https://fabvector.com/materials/nylon-pa66 (Portuguese: https://fabvector.com/pt/materials/nylon-pa66)
- Price index: $ (1–5, 6061-T6 = $)

## Mechanical properties (typical values, not certified minimums)

| Property | Value |
|---|---|
| Tensile strength | 83 MPa (dry) |
| Yield strength | ~83 MPa (dry) |
| Hardness | R120 (Rockwell, dry) |
| Density | 1.14 g/cm³ |
| Machinability | ★★★☆☆ (3/5) |
| Corrosion resistance | ★★★☆☆ (3/5) |

## When to choose it

You like PA6 but need a bit more stiffness, hardness and service temperature — PA66 holds gear teeth and threads crisper and runs hotter for a negligible price difference.

## When to look elsewhere

Moisture-driven swelling is the concern: PA66 absorbs slightly less water than PA6 but still far too much for precision fits — that problem is solved by POM, not by switching nylons.

## Typical applications

- Gears and cams running near 100 °C
- Electrical insulating blocks and spacers
- Bushings and thrust washers under load
- Automotive under-hood brackets

## Compatible surface finishes

- [As-Machined](https://fabvector.com/md/finishes/as-machined)
- [Vibratory Tumbling](https://fabvector.com/md/finishes/vibratory-tumbling)
- [Laser Marking](https://fabvector.com/md/finishes/laser-marking)

Industries: automotive, industrial-automation, energy · Instant quote: https://fabvector.com/quote