: While toughness increases, the absolute tensile strength and stiffness (modulus) decrease.
Freshly extruded nylon tubing is "Dry As Molded" (DAM) and is at its most brittle. As it "matures" by absorbing ambient moisture, it undergoes several shifts: nylon matures tube
Yellowing, surface cracks, loss of elasticity, and brittleness. : While toughness increases, the absolute tensile strength