The tensile strength, elongation at failure in the tensile tests, tearing strength, resistance to accelerated weathering, and resistance to exposure outdoors of the six polyamide samples were determined.Tensile strength and elongation were determined at various temperatures and humidities after conditioning the specimens. The test specimens were cut with die D [10]. The results obtained utilizing two different machines are described in tables 2 and 3. A typical stress-strain curve obtained with an autographic strain gage system is shown in
figure 3.