Developed as a low-moisture absorbing polyamide, polyamide 6/12 (PA 6/12) has a distinct chemical structure that gives it its low-moisture absorbing property. As it has a larger number of carbon atoms separating the amine groups in the polyamide, less moisture can be absorbed by PA 6/12 than a polyamide with less carbon atoms between its amine groups. This makes PA 6/12 less ductile than PA 6 and PA 6/6, as it does not swell due to moisture absorption. This also results in a reduction in the physical properties of PA 6/12 when compared to PA 6 and PA 6/6.
PA 6/12 can be easily modified to improve its physical properties however, and so it can be used in a number of applications that require good physical properties, high heat resistance, chemical and moisture resistance and good dimensional stability.