General Characteristics of Amorphous Plastics Softens over a wide temperature range Easy to thermoform Transparent Poor chemical resistance Bonds well using adhesives or solvents Prone to stress cracking Poor fatigue resistance Structural applications only (not suitable for bearing and wear) Amorphous plastics can be considered for a variety of applications. Selecting a plastic material for use in a high temperature environment requires careful review of material properties data. View our interactive Thermoplastics Triangle to compare materials. Explore Amorphous Plastics ABS Outstanding impact resistant low cost plastic, easy to machine, and thermoform. Acrylic Outstanding strong, stiff, clear plastic available in a variety of brilliant colors and finishes. Expanded PVC Lightweight, durable, moderately expanded closed cell sheet material. KYDEX® Thermoplastic Sheet High impact, thermoplastic sheet that is tough, durable, and easy to form. PETG Transparent plastic sheet with good impact resistance and outstanding thermoforming characteristics. Polycarbonate Transparent, strong and stiff thermoplastic with outstanding impact resistance. PPSU High temperature thermoplastic material with outstanding impact resistance that is autoclavable. PSU High temperature, semi-transparent plastic material with good mechanical properties. PVC Strong, stiff, versatile low cost plastic material that is easy to fabricate, bond, and weld. Ultem® High strength plastic with outstanding electrical and high service temperature properties.