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VICTREX ST™ POLYMER G45

High performance thermoplastic material, unreinforced PolyEtherKetoneEtherKetoneKetone (PEKEKK), semi crystalline, depth filtered granules for injection moulding, standard flow, colour natural/beige.

Applications for high strength and stiffness as well as good ductility at higher temperatures. Chemically resistant to aggressive environments.

Material Properties
Physical

Nominal Value

Unit

Test Method

Density (Crystalline)

1.30

g/cm³

ISO 1183

Spiral Flow

Internal Method

-- 1

16.0

cm

-- 2

68.0

cm

-- 3

19.0

cm

Molding Shrinkage

ISO 294-4

Across Flow 4

1.6

%

Across Flow 5

1.2

%

Flow 4

1.4

%

Flow 5

1.1

%

Water Absorption - Saturation (100°C)

0.95

%

ISO 62
Mechanical

Nominal Value

Unit

Test Method

Tensile Modulus (23°C)

4200

MPa

ISO 527-1

Tensile Stress (Yield, 23°C)

115

MPa

ISO 527-2

Tensile Strain (Break, 23°C)

25

%

ISO 527-2

Flexural Modulus (23°C)

4000

MPa

ISO 178

Flexural Stress

ISO 178

23°C 6

190

MPa

3.5% Strain, 23°C

130

MPa

125°C

110

MPa

175°C

35.0

MPa

275°C

20.0

MPa

Compressive Stress

ISO 604

23°C

145

MPa

120°C

90.0

MPa

200°C

35.0

MPa

Impact

Nominal Value

Unit

Test Method

Charpy Notched Impact Strength (23°C)

4.0

kJ/m²

ISO 179/1eA

Charpy Unnotched Impact Strength (23°C)

No Break

ISO 179/1U

Notched Izod Impact Strength (23°C)

6.0

kJ/m²

ISO 180/A

Unnotched Izod Impact Strength (23°C)

No Break

ISO 180
Hardness

Nominal Value

Unit

Test Method

Shore Hardness (Shore D, 23°C)

84.5

ISO 868
Thermal

Nominal Value

Unit

Test Method

Deflection Temperature Under Load (1.8 MPa, Unannealed)

172

°C

ISO 75-2/Af

Glass Transition Temperature

ISO 11357-2

Onset

162

°C

Midpoint

169

°C

Melting Temperature

387

°C

ISO 11357-3

CLTE - Flow

ISO 11359-2

< 162°C

45

ppm/K

> 162°C

105

ppm/K

CLTE - Average

ISO 11359-2

< 162°C

55

ppm/K

> 162°C

130

ppm/K

Thermal Conductivity

ISO 22007-4

23°C 7

0.29

W/m/K

23°C 8

0.32

W/m/K

Electrical

Nominal Value

Unit

Test Method

Volume Resistivity (23°C)

1.0E+16

ohms·cm

IEC 60093

Dielectric Strength (2.00 mm)

23.0

kV/mm

IEC 60243-1

Dielectric Constant (23°C, 1 kHz)

3.00

IEC 60250

Dissipation Factor (23°C, 1 MHz)

4.0E-3

IEC 60250

Comparative Tracking Index

150

V

IEC 60112
Fill Analysis

Nominal Value

Unit

Test Method

Melt Viscosity (420°C)

225

Pa·s

ISO 11443
Typical Processing Information
Injection

Nominal Value

Unit

Drying Temperature

150 to 180

°C

Drying Time

3.0 to 6.0

hr

Hopper Temperature

< 100

°C

Rear Temperature

385

°C

Middle Temperature

395 to 400

°C

Front Temperature

405

°C

Nozzle Temperature

410

°C

Mould Temperature

200 to 220

°C

Injection Notes

Runner: Die / nozzle >3mm, manifold >3.5mm
Gate: >1mm or 0.5 x part thickness

Important notes:
1) Processing conditions quoted in our datasheets are typical of those used in our processing laboratories

  • Data for mould shrinkage should be used for material comparison. Actual mould shrinkage values are highly dependent on part geometry, mould configuration, and processing conditions.
  • Mould shrinkage differs for along flow and across flow directions. “Along flow” direction is taken as the direction the molten material is travelling when it exits the gate and enters the mould.
  • Mould shrinkage is expressed as a percent change in dimension of a specimen in relation to mould dimensions.

2) Data are generated in accordance with prevailing national, international and internal standards, and should be used for material comparison. Actual property values are highly dependent on part geometry, mould configuration and processing conditions. Properties may also differ for along flow and across flow directions.

Detailed data available on our website www.victrex.com or upon request.

Notes
1Mould Temperature: 200°C, Melt Temperature: 395°C, 1.00 mm
2Mould Temperature: 200°C, Melt Temperature: 395°C, 3.00 mm
3Mould Temperature: 220°C, Melt Temperature: 415°C, 1.00 mm
4415°C nozzle, 220°C tool
5395°C nozzle, 200°C tool
6At yield
7Average
8Along flow

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Vic
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