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LNP (SABIC Innovative Plastics) VALOX® EXCP0212 Polybutylene Terephthalate, 45% Graphite Fiber Reinforcement

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Subcategory: Filled/Reinforced Thermoplastic; 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:
Automotive heat sinks/spreaders, cooling fans.

  • Features: Thermally Conductive, Electrically Conductive, Flame Retardant
  • Forms: Pellets
  • Processing Method: Injection Molding
Information provided by LNP, a GE Plastics Company.

Physical PropertiesOriginal ValueComments
Specific Gravity1.66 g/cc ASTM D792

Mechanical Properties
Tensile Strength at Break49 MPa Type I, 5 mm/min; ASTM D638
Tensile Strength, Yield49 MPa Type I, 5 mm/min; ASTM D638
Elongation at Break1.7 % Type I, 5 mm/min; ASTM D638
Flexural Modulus8.64 GPa (50.8 mm Span) 1mm/min; ASTM D790
Flexural Strength73.8 MPa at Break, (50.8 mm Span) 1mm/min; ASTM D790
Izod Impact, Notched0.16 J/cm ASTM D256
Izod Impact, Unnotched0.907 J/cm ASTM D256
Falling Dart Impact4.34 J ASTM D3763

Electrical Properties
Volume Resistivity160 ohm-cm ASTM D257
Surface Resistance100000 ohm ASTM D257

Thermal Properties
Thermal Conductivity1.1 W/m-K ASTM C177
Deflection Temperature at 0.46 MPa (66 psi)213 °C Unannealed (3.18 mm); ASTM D648
Deflection Temperature at 1.8 MPa (264 psi)161 °C Unannealed (3.18 mm); ASTM D648

Processing Properties
Rear Barrel Temperature238 - 254 °C 
Middle Barrel Temperature243 - 260 °C 
Front Barrel Temperature249 - 266 °C 
Nozzle Temperature243 - 260 °C 
Melt Temperature249 - 266 °C 
Mold Temperature48.9 - 76.7 °C 
Drying Temperature121 °C 
Dry Time3 - 12 hour 
Moisture Content0.02 % Suggested
Back Pressure0.345 - 0.689 MPa 
Clamp Pressure41 - 69 MPa 
Shot Size40 - 80 % Suggested
Vent Depth0.0025 - 0.0038 cm 
Screw Speed50 - 100 rpm 
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