| Key properties of Dotmar Polyester PETP Ertalyte include: • High mechanical strength, stiffness & hardness • Very good creep resistance • Excellent wear resistance (comparable or even better than Nylon grades) • Very good dimensional stability (better than polyacetal) • Excellent stain resistance • Better resistance to acids than nylon and polyacetal. • Good electrical insulating properties • Physiologically inert (suitable for food contact) • Good resistance to high energy radiation (Gamma and X-rays) Physical Properties of Polyester PETP Ertalyte Table 1. Physical properties of Dotmar Polyester PETP Ertalyte | | | Specific Gravity
g/cm3 | 1.39 | | Continuous Operating Temperature
°C - 5,000Hrs / 20,000Hrs | 115/100 | | Tensile Strength MPa | 90 | | Impact Resistance Charpy KJ/m2 | >50 | | Impact Resistance Izod KJ/m2 | 2 | | Hardness Rockwell M | 96 | | Co-efficient of Thermal Expansion mm/(mmxK) x 10-6
avg value 23-60°C | 60 | | Dielectric Strength kV/mm | 22 | | Surface Resistivity Ohms | 1x1014 | | Flammability Oxygen Index % | 25 | | Flammability UL94 | HB | | FDA Approved | Yes | |