What’s the Difference?™: Nylon 6 vs. Nylon 66 - UL Prospector

Yellowing, surface cracks, loss of elasticity, and brittleness.

: While toughness increases, the absolute tensile strength and stiffness (modulus) decrease.

: The tube will slightly expand in size and volume as it reaches equilibrium.

If your goal is to prevent the tube from "maturing" into a failed, brittle state, monitor these factors:

: Depending on wall thickness and humidity, reaching a stable "mature" state can take anywhere from days to several weeks . 2. Guide to Managing Nylon Tubing Life Cycles Characteristics Recommendations Initial (DAM) High stiffness, low impact resistance, maximum brittleness. Avoid high-impact installation immediately after extrusion. Mature (Conditioned) Balanced strength and flexibility; dimensions are stable.

: Impact resistance can improve by up to 10 times as the material absorbs water.

if surface stiffness or visible cracks appear. 3. Factors Accelerating Degradation (Aging)