VICTREX® ST™ STG45

Category: PEKEKK , Polyetherketone Etherketone Ketone
Manufacturer: Victrex plc
Trademark: VICTREX® ST™
Fillers: -
Ports: Qinzhou, Shekou, Shanghai, Ningbo
Delivery Terms FOB, CIF, DAP, DAT, DDP
PDF: 9lKmik_VICTREX-ST-STG45.pdf
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High performance thermoplastic material, unreinforced PolyEtherKetoneEtherKetoneKetone (PEKEKK), semi crystalline, depth filtered granules for injection moulding, standard flow, colour natural/beige.

Typical Application Areas:
Applications for high strength and stiffness as well as good ductility at higher temperatures. Chemically resistant to aggressive environments.
General Information
Features
  • Semicrystallization
  • Rigidity, high
  • High strength
  • Good chemical resistance
  • Heat resistance, high
  • ductility
Appearance
  • Beige
  • Natural color
Forms
  • Particles
Processing Method
  • Injection molding
PhysicalNominal ValueUnitTest Method
Density ISO 1183
    -- 11.26g/cm³ISO 1183
    -- 21.30g/cm³ISO 1183
Spiral Flow Internal method
    -- 16.0cmInternal method
    -- 19.0cmInternal method
    -- 368.0cmInternal method
Molding Shrinkage ISO 294-4
    Vertical flow direction 41.2%ISO 294-4
    Vertical flow direction 51.6%ISO 294-4
    Flow direction 61.4%ISO 294-4
    Flow direction 71.1%ISO 294-4
HardnessNominal ValueUnitTest Method
Durometer Hardness (Shore D, 23°C)85ISO 868
MechanicalNominal ValueUnitTest Method
Tensile Modulus (23°C)4300MPaISO 527-2
Tensile Stress (Yield, 23°C)115MPaISO 527-2
Tensile Strain (Break, 23°C)20%ISO 527-2
Flexural Modulus (23°C)4100MPaISO 178
Flexural Stress ISO 178
    3.5% strain, 23°C 135MPaISO 178
    23°C 8180MPaISO 178
    125°C 110MPaISO 178
    175°C 36.0MPaISO 178
    275°C 21.0MPaISO 178
Compressive Stress ISO 604
    23°C 145MPaISO 604
    120°C 90.0MPaISO 604
    200°C 35.0MPaISO 604
ImpactNominal ValueUnitTest Method
Charpy Notched Impact Strength (23°C)4.0kJ/m²ISO 179/1eA
Charpy Unnotched Impact Strength (23°C)No BreakISO 179
Notched Izod Impact (23°C)6.0kJ/m²ISO 180/A
Unnotched Izod Impact Strength (23°C)No BreakISO 180
ThermalNominal ValueUnitTest Method
Heat Deflection Temperature (1.8 MPa, Unannealed)172°CISO 75-2/Af
Glass Transition Temperature 9162°CISO 3146
Melting Temperature (DSC) 387°CISO 3146
Linear thermal expansion coefficient ISO 11359-2
    Flow 104.5E-5cm/cm/°CISO 11359-2
    Flow 111.1E-4cm/cm/°CISO 11359-2
    Lateral 125.5E-5cm/cm/°CISO 11359-2
    Lateral 131.3E-4cm/cm/°CISO 11359-2
Thermal Conductivity (23°C)0.29W/m/KISO 22007-4
ElectricalNominal ValueUnitTest Method
Volume Resistivity (23°C)1.0E+16ohms·cmIEC 60093
Dielectric Strength (2.50 mm)23kV/mmIEC 60243-1
Dielectric Constant (23°C, 1 kHz)3.00IEC 60250
Dissipation Factor (23°C, 1 MHz)4.0E-3IEC 60250
Comparative Tracking Index 14150VIEC 60112
Fill AnalysisNominal ValueUnitTest Method
Melt Viscosity (420°C)220000mPa·sISO 11443
InjectionNominal ValueUnit
Drying Temperature
    A 180°C
    B 150°C
Drying Time
    A 3.0hr
    B 6.0hr
Hopper Temperature < 100°C
Rear Temperature 375°C
Middle Temperature 380 - 385°C
Front Temperature 390°C
Nozzle Temperature 395°C
Mold Temperature 200 - 220°C
Mold Temperature - Maximum 250°C
Injection instructions
Gate: >1mm or 0.5 x part thickness
Note Message
1 .Amorphous
2 .Crystalline
3 .3 mm
4 .395°C nozzle, 200°C tool
5 .415°C nozzle, 220°C tool
6 .415°C nozzle, 220°C tool
7 .395°C nozzle, 200°C tool
8 .at Yield
9 .Onset
10 .Below Tg
11 .Above Tg
12 .Below Tg
13 .Above Tg
14 .Result based on 450G
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