尼龙 4.6  与普通尼龙相比，尼龙4.6的特点是刚性保存力强，耐蠕变性 好，在较宽的温度范围内，更耐热老化，因此，尼龙4.6用于尼龙6 、尼龙66、POM 和PET在刚度、抗蠕变 、耐热老化、疲劳强度 和耐磨性能方面所达不到要求的“较高的温度领域”（80 -150 ℃）

Compared with ordinary nylon, nylon 4.6 is characterized by strong rigidity preservation, good creep resistance and better thermal aging resistance in a wide temperature range. Therefore, nylon 4.6 is used in the "higher temperature field" (80 -150℃) where nylon 6, nylon 66, POM and PET cannot meet the requirements in terms of rigidity, creep resistance, thermal aging resistance, fatigue strength and wear resistance.