These are classified into 2 types according to the method of production: cast & extruded. E.g. PA Mo, PA GF, PA oil, PA 12, PA 11, PA 66, PA 6

Product strengths:

·         Good wear resistance even in demanding environments

·         Tensile and compressive strength: Cast is tougher and more fatigue resistant than Extruded.

·         Self-lubricating and low friction coefficient, so particularly suited for sliding applications

·         Weatherproof, ageing resistance

·         Good resistance at low temperatures

Product weakness:

·         Both cast and extruded types are hydroscopic

·         Cast PA has higher fragility than extruded

·         It is advisable to use cast type for large dimensions because of its molecular structure and better quality

Applications:

Mechanical: due to the possibility of producing large-size pieces, widely used in large diameter gears, earrings, pulleys, wheels and anti-wear guides.

Electrical: Electrical properties may be affected by humidity adsorption.

Chemical: It has good mechanical stability against organic solvents, fuels, acids and alkalis.

Food contact: Generally, it is not used in contact with hot foods.