Crastin® PBT thermoplastic polyester resin Crastin® LW685FR NC010 Crastin® LW685FR is a flame retardant, 30% glass and mineral reinforced polybutylene terephthalate molding resin. It has excellent dimensional stability and is recognized by UL as UL94V-0 at 0.8 mm (0.031 in) and UL94-5VA at 2.2 mm (0.088 in). Property Test Method Units Value Mechanical Tensile Strength ASTM D 638 MPa (kpsi) 82 (11.9) Elongation at Break ASTM D 638 % 1.7 Tensile Modulus ASTM D 638 MPa (kpsi) 10344 (1500) Flexural Modulus ASTM D 790 MPa (kpsi) 10068 (1460) Flexural Strength ASTM D 790 MPa (kpsi) 135 (19.7) Izod Impact ASTM D 256 J/m (ft lb/in) 42 (0.8) Unnotched Impact ASTM D 4812 J/m (ft lb/in) 352 (6.6) Thermal Heat Deflection Temperature ASTM D 648 °C (°F) 0.45MPa (66psi) 217 (423) 1.8MPa (264psi) 202 (396) Melting Point ASTM D 3418 °C (°F) 225 (437) Electrical Surface Resistivity ASTM D 257 ohm 0.1 E15 Volume Resistivity ASTM D 257 ohm cm 10 E15 Dielectric Strength, Short Time ASTM D 149 kV/mm (V/mil) 1.6mm (0.063in) 29 (750) 3.2mm (0.126in) 23 (602) Dielectric Constant ASTM D 150 1E3 Hz 4.1 1E6 Hz 3.9 Dissipation Factor ASTM D 150 1E3 Hz 0.007 1E6 Hz 0.014 Contact DuPont for Material Safety Data Sheet, general guides and/or additional information about ventilation, handling, purging, drying, etc. Mechanical properties measured at 23°C (73°F) unless otherwise stated.