Physical Properties Metric English Comments Density 1.32 g/cc 0.0477 lb/in3 ISO 1183 Water Absorption at Saturation 2.3 % 2.3 % ISO 62 Mechanical Properties Metric English Comments Tensile Strength at Break 146 MPa 21200 psi ISO 527 Elongation at Break 3.0 % 3.0 % ISO 527 Tensile Modulus 8.30 GPa 1200 ksi ISO 527 Charpy Impact Unnotched 5.70 J/cm2 @Temperature -30.0 °C 27.1 ft-lb/in2 @Temperature -22.0 °F ISO 179/1eU 6.60 J/cm2 @Temperature 23.0 °C 31.4 ft-lb/in2 @Temperature 73.4 °F ISO 179/1eU Charpy Impact, Notched 0.800 J/cm2 @Temperature -30.0 °C 3.81 ft-lb/in2 @Temperature -22.0 °F ISO 179/1eA 0.900 J/cm2 @Temperature 23.0 °C 4.28 ft-lb/in2 @Temperature 73.4 °F ISO 179/1eA Thermal Properties Metric English Comments Melting Point 222 °C 432 °F ISO 11357 Vicat Softening Point 213 °C @Load 5.10 kg 415 °F @Load 11.2 lb Method B; ISO 306 219 °C @Load 1.02 kg 426 °F @Load 2.25 lb Method A; ISO 306