POLYAMIDE (PA)
Polyamide (PA) is a material with high mechanical resistance and good fatigue resistance.
It is an excellent shock absorber and has good slide characteristics.
Excellent resistance to wear and it is also self-extinguishing
It is used for parts such as:
- Gears
- Wheel hub assemblies
- Rollers
- Wheels
- Worm drives
- Star-wheel distributors
- Guides
- Screws and Washers
- Pulleys
It works well at temperatures of between 90ºC and -40ºC
It absorbs humidity, which must be taken into account when calculating the mechanical elements which require tolerance (axles, gears, etc.).
Technical Data for Polyamide (PA)
Propiedad | Ensayo | Unidad | Valor |
Densidad | DIN 53479 | gr/cm3 | 1.15 |
Esfuerzo punto fluencia | DIN 53455 | MPa | 85 |
Alargamiento a rotura | DIN 53455 | % | 200 |
Módulo de Elasticidad | DIN 53457 | MPa | 3200 |
Dureza de penetración a la bola (30sg) | DIN 53457 | Mpa | 70 / 160 |
Resistencia al impacto | DIN 53453 | kJ/m2 | No rompe |
Coeficiente dinámico de fricción | N/mm2 | 0.38 / 0.45 | |
Punto de Fusión | DIN 53736 | ºC | 220 |
Temperatura de trasición Vitrea | DIN 53736 | ºC | 40 |
Temperatura de servicio máxima puntual | ºC | 170 | |
Temperatura de servicio máxima constante | ºC | 110 | |
Conductividad térmica | W(km) | 0.23 | |
Capacidad calorífica específica (a 23ºC) | 5(g.k) | 1.7 | |
Coeficiente dilatación lineal (a 23ºC) | 105 1k |
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