Rods, Sheets, Tubes
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Description
Cast nylon 6. The
method of production of this polyamide (i.e. the polymerisation of the
caprolactam directly in the mould) allows the production of stock shapes in
larger than normal dimensions, such as big rings or very thick sheets. The
general features are similar to those of PA66.6, which means that it is stiffer
and more brittle than extruded PA6
Features
wear resistance: good even in demanding environments. Tensile stress and compressive strength: the toughness is better than that of extruded PA6 and fatigue resistance is very high
self-lubricating: the friction coefficient is low and generally for sliding applications it does not require lubricators
ageing resistance: weatherproof, with good resistance at low temperature natural color.
Weak Points
Like extruded nylon 6 it is hygroscopic. Due to its high fragility (in comparison with extruded PA6) it is advisable to use cast nylon for larger-sized pieces. Because of the molecular structure, large-sized cast pieces have a better quality than those of small dimensions.
Application
Mechanical: thanks to the possibility of obtaining large-sized pieces this material is widely used in the mechanical field to produce large diameters gears, cams, pulleys, wheels and anti-wear guides. In the building of parts for construction machines, excavators and earthmovers it is used for gear wheels, guide bearings, sliding bearings, etc.
Food contact: generally it is not used in contact with food
Electrical: usage in the electrical field is to be avoided as the electrical properties change with the moisture content
Chemical: it is resistant to alkali, inorganic compounds and solvents