Polyamide obtained by the polymerisation of Hexamethylenediamine and Adipic acid. It is one of the oldest plastics used for engineering, having been created in the US in the 1930’s. Due to its origin it’s used widelly in the American and
UK markets. In comparison to PA6 it’s stiffer and tougher but more brittle. It’s advisable to use PA66 instead of PA6 when a higher stiffness is required to the detriment of resiliance. It can be easily machined and all our stoch shapes of PA66 are marked along the whole length with product code and batch number, according to ISO 9002 standards.
Physical Properties (indicative values)
| GENERAL PROPERTIES | Test Method | Units | Value |
| Density | ISO 1183 | g/cm3 | 1.14 |
| Water absorbtion
– at saturation in air of 23°C / 50% R.H. – at saturation in water 23°C |
ISO 62 ISO 62 |
% % |
2.6 8 |
| MECHANICAL PROPERTIES | |||
| Tensile stress at yield and break | ISO 527 | N/mm2 | 61 |
| Elongation at break | ISO 527 % | 150 | |
| Tensile modulus of elasticity | ISO 527 | N/mm2 | 1900 |
| Compression test
– 1% strain after 1,000 hrs |
ISO 899 |
N/mm2 |
7 |
| Charpy impact strength – Notched | ISO 179-1/1eU | KJ/mm2 | 18 |
| Charpy impact strength – Unnotched | ISO 179-1/1eA | KJ/mm2 | no break |
| Ball indentation hardness | ISO 2039 | N/mm2 | 100 |
| Shore hardness D | ISO 2039 | D | 89 |
| Coefficient of frition to steel(12) | ISO 8295 | – | 0.42 |
| THERMAL PROPERTIES | |||
| Melting temperature | ISO 3156 | °C | 255 |
| Thermal conductivity at 23°C | ISO 22007.2 | W/9km) | 0.25 |
| Deformation temperature(15) | ISO 75 | °C | 103 |
| Coefficient of linear thermal expansion
– average value between 23 and 60°C |
ISO 11359 |
m(m.K) |
85 x 10-6 |
| Max. allowable service temperature in air | |||
| – Continuously(17) | – | °C | 95 |
| – Short periods(18) | – | °C | 165 |
| Minimum service temperature(19) | – | °C | -30 |
| Flamability | |||
| – Oxygen index | ISO 4589 % | 24 | |
| – according to UL 94 (3/6 thickness) | UL94 – | V2 | |
| ELECTRICAL PROPERTIES | |||
| Dilectrical constant | ISO 250 | – | 7 |
| Dielectric strength | ISO 243 | KV/mm | 25 |
| Volume resistivity | ISO 93 | Ωcm | 1012 |
| Dissipation factor tan ∆ at 1 MHz | ISO 250 | – | 0.06 |
Specification: NYLON66+GF-LOCAL-Local
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