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VICTREX HT™ POLYMER G22

High performance thermoplastic material, unreinforced PolyEtherKetone (PEK), semi crystalline, depth filtered granules for injection moulding, easy flow, FDA food contact compliant, colour natural/beige.

Applications for high strength and stiffness as well as good ductility at higher temperatures. Chemically resistant to aggressive environments, suitable for sterilsation for medical and food contact applications.

Material Properties
Physical

Nominal Value

Unit

Test Method

Density (Crystalline)

1.30

g/cm³

ISO 1183

Spiral Flow 1

20.0

cm

Internal Method

Molding Shrinkage 2

ISO 294-4

Across Flow

1.2

%

Flow

1.0

%

Water Absorption (Saturation, 23°C)

0.60

%

ISO 62

Water Absorption - Saturation (100°C)

0.75

%

ISO 62
Mechanical

Nominal Value

Unit

Test Method

Tensile Modulus (23°C)

4300

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 3

180

MPa

3.5% Strain, 23°C

130

MPa

125°C

105

MPa

175°C

32.0

MPa

275°C

16.0

MPa

Compressive Stress

ISO 604

23°C

140

MPa

120°C

90.0

MPa

200°C

30.0

MPa

Impact

Nominal Value

Unit

Test Method

Charpy Notched Impact Strength (23°C)

3.8

kJ/m²

ISO 179/1eA

Charpy Unnotched Impact Strength (23°C)

No Break

ISO 179

Notched Izod Impact Strength (23°C)

5.5

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)

85.5

ISO 868
Thermal

Nominal Value

Unit

Test Method

Deflection Temperature Under Load (1.8 MPa, Unannealed)

163

°C

ISO 75-2/Af

Glass Transition Temperature

ISO 11357-2

Onset

152

°C

Midpoint

160

°C

Melting Temperature

373

°C

ISO 11357-3

CLTE - Flow

ISO 11359-2

< 152°C

45

ppm/K

> 152°C

75

ppm/K

CLTE - Average

ISO 11359-2

< 152°C

55

ppm/K

> 152°C

130

ppm/K

Thermal Conductivity

ISO 22007-4

23°C 4

0.29

W/m/K

23°C 5

0.32

W/m/K

Electrical

Nominal Value

Unit

Test Method

Volume Resistivity

IEC 60093

23°C

1.0E+16

ohms·cm

125°C

1.0E+15

ohms·cm

275°C

1.0E+9

ohms·cm

Dielectric Strength (2.00 mm)

23.0

kV/mm

IEC 60243-1

Comparative Tracking Index

150

V

IEC 60112
Flammability

Nominal Value

Unit

Test Method

Glow Wire Flammability Index (2.0 mm)

960

°C

IEC 60695-2-12
Fill Analysis

Nominal Value

Unit

Test Method

Melt Viscosity (400°C)

200

Pa·s

ISO 11443
Typical Processing Information
Injection

Nominal Value

Unit

Drying Temperature

120 to 150

°C

Drying Time

3.0 to 5.0

hr

Hopper Temperature

< 100

°C

Rear Temperature

375

°C

Middle Temperature

380 to 385

°C

Front Temperature

390

°C

Nozzle Temperature

395

°C

Mold Temperature

190 to 215

°C

Injection Notes

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
1Mold Temperature: 200°C, Melt Temperature: 395°C, 1.00 mm
2395°C nozzle, 200°C tool
3At yield
4Average
5Along flow

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