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Nylon 66 is an extruded nylon that has high mechanical strength, stiffness, heat and wear resistance, and also has good creep resistance – but its impact strength and mechanical damping ability are reduced. This material is well suited for machining on automatic lathes.
Of all the unmodified nylons, This one is the strongest, most rigid and has one of the highest melting points.
Physical Properties
| Properties | Test Methods | Values |
|---|---|---|
| <b>Colour</b> | – | natural (cream) / Black |
| <b>Density (g/cm³)</b> | ISO 1183-1 | 1.14 |
| <b>Water Absorption:</b><br>- After 24/96 h immersion in water of 23°C (mg) | <br>ISO 62 | <br>40 / 76 |
| <b>Melting Temperature (°C)</b> | ISO 11357-1/-3 | 260 |
| <b>Thermal Conductivity (W/(m.k))</b> | – | 0.28 |
| <b>Coefficient of linear thermal expansion (m/(m.k)):</b><br>- Average value between 23 and 60°C<br>- Average value between 23 and 100°C | <br>-<br>- | <br>80 x 10¯⁶<br>95 x 10¯⁶ |
| <b>Temperature of deflection under load:</b><br>- Method A: 1.8 MPa | <br>ISO 75-1/-2 | <br>85 |
| <b>Max. allowable service temperature in air:</b><br>- For short periods (°C)<br>- Continuously: for 5,000 / 20,000 h | <br>-<br>- | <br>180<br>95 / 80 |
| <b>Min. Service temperature (°C)</b> | – | -30 |
| <b>Flammability (%):</b><br>- “Oxygen Index”<br>- According to UL 94 (3 / 6mm thickness) | <br>ISO 4589-1/-2<br>- | <br>26<br>HB / HB |
Mechanical Properties
| Property (Unit) | Test Method | Value |
|---|---|---|
| <b>Tension Test:</b><br>- Tensile stress at yield / tensile stress at break (MPa)<br>- Tensile strength (MPa)<br>- Tensile strain at yield (%)<br>- Tensile strength at break (%)<br>- Tensile modulus of elasticity (MPa) | <br>ISO 527-1/-2<br>ISO 527-1/-2<br>ISO 527-1/-2<br>ISO 527-1/-2<br>ISO 527-1/-2 | <br>90 / -<br>93<br>5<br>50<br>3550 |
| <b>Compression Test:</b><br>- Compressive stress at 1 / 2 / 5% nominal strain (MPa) | <br>ISO 604 | <br>32 / 62 / 100 |
| <b>Charpy Impact Strength – Unnotched (KJ/m²)</b> | ISO 179-1/1eU | No Break |
| <b>Charpy Impact Strength – Notched (KJ/m²)</b> | ISO 2039-1 | 4.5 |
| <b>Ball Indentation Hardness (N/mm²)</b> | ISO 2039-1 | 160 |
| <b>Rockwell Hardness</b> | ISO 2039-2 | M88 |
| <b>Surface Resistivity (Ohm)</b> | IEC 60093 | > 10¹³ |
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