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SABIC Innovative Plastics VALOX 311 PBT (North America)

Subcategory: Polybutylene Terephthalate (PBT); Polyester, TP; Polymer; Thermoplastic

Close Analogs: Saudi Basic Industries Corporation (SABIC) announced on August 31st, 2007, the completion of its purchase of GE Plastics.

Material Notes:
Information provided by GE Plastics for their North American product line.

Physical Properties Metric English Comments

Density 1.31 g/cc 0.0473 lb/in³ ASTM D 792

Water Absorption 0.08 % 0.08 % 24 hours @ 73F; ASTM D 570

Linear Mold Shrinkage 0.009 - 0.016 cm/cm 0.009 - 0.016 in/in Flow, 30-90 mil; ASTM D 955

Linear Mold Shrinkage 0.015 - 0.023 cm/cm 0.015 - 0.023 in/in Flow, 90-180 mil; ASTM D 955

Linear Mold Shrinkage, Transverse 0.01 - 0.017 cm/cm 0.01 - 0.017 in/in 30-90 mil; ASTM D 955

Linear Mold Shrinkage, Transverse 0.016 - 0.024 cm/cm 0.016 - 0.024 in/in 90-180 mil; ASTM D 955

Mechanical Properties

Hardness, Rockwell R 117 117 ASTM D 785

Tensile Strength @ Yield 51.7 MPa 7500 psi Type I, 2.0 in/min; ASTM D 638

Elongation at Break 300 % 300 % Type I, 2.0 in/min; ASTM D 638

Flexural Modulus 2.34 GPa 340 ksi 0.05 in/min, 2" span; ASTM D 790

Flexural Yield Strength 82.7 MPa 12000 psi 0.05 in/min, 2" span; ASTM D 790

Izod Impact, Unnotched 16 J/cm 30 ft-lb/in 73F; ASTM D 4812

Gardner Impact 40.7 J 30 ft-lb Modified Gardner, 73F; ASTM D 3029

Izod Impact, Notched 0.534 J/cm 1 ft-lb/in 73F; ASTM D 256

Electrical Properties

Volume Resistivity Min 4e+016 ohm-cm Min 4e+016 ohm-cm ASTM D 257

Dielectric Constant 3.1 3.1 1 MHz; ASTM D 150

Dielectric Constant 3.3 3.3 100 Hz; ASTM D 150

Dielectric Strength 15.7 kV/mm 400 V/mil in air, 125 mils; ASTM D 149

Dielectric Strength 23.2 kV/mm 590 V/mil in oil, 62 mils; ASTM D 149

Dissipation Factor 0.002 0.002 100 Hz; ASTM D 150

Dissipation Factor 0.02 0.02 1 MHz; ASTM D 150

Thermal Properties

CTE, linear 68°F 81 µm/m-°C 45 µin/in-°F Flow, -40F to 100F; ASTM E 831

CTE, linear, 212°F (100°C) 139 µm/m-°C 77 µin/in-°F Flow, 140F to 280F; ASTM E 831

Deflection Temperature at 0.46 MPa (66 psi) 154 °C 310 °F 0.250 inch, unannealed; ASTM D 648

Deflection Temperature at 1.8 MPa (264 psi) 54.4 °C 130 °F 0.250 inch, unannealed; ASTM D 648

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