Kynar Flex® 2850-00

Alternative and trade names
PVDF
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Description

Kynar Flex® resins are fluorinated thermoplastic copolymers.

Outstanding characteristics: chemical resistance, imperviousness to UV, high barrier properties, high purity, good mechanical and thermo-mechanical properties.

Kynar Flex® 2850-00 resin is a standard grade of granules less flexible than the grade Kynar Flex® 2800-00 resin with a higher melting point. For extrusion, wire and cable constructions which require an UL wire ratings to 150 degrees C. Also for applications requiring a UL RTI temperature rating of 140 degrees C.

This material data has been provided by Arkema Technical Polymers.

All metrics apply to room temperature unless otherwise stated. SI units used unless otherwise stated.
Equivalent standards are similar to one or more standards provided by the supplier. Some equivalent standards may be stricter whereas others may be outside the bounds of the original standard.

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Properties

General

PropertyValueTesting StandardConditionComment

Coefficient of friction

0.19 [-]

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ASTM D1894

vs Steel, Kinetic

0.26 [-]

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ASTM D1894

vs Steel, Static

Density

1.77 - 1.8 g/cm³

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ASTM D792

1.77 g/cm³

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ISO 1183

dry

Limiting oxygen index

43 %

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ASTM D2863, ISO 4589-1/-2

dry

Moisture absorption

0.015 %

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Sim. to ISO 62

Water absorption

0.03 %

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Sim. to ISO 62

0.03 - 0.05 %

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ASTM D570

Mechanical

PropertyTemperatureValueTesting StandardConditionComment

Compressive strength

41.4 - 58.6 MPa

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ASTM D695

Elastic modulus

1.0 - 1.5 GPa

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ASTM D638

1.3 GPa

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ISO 527-1/-2

dry

Elongation

30 - 200 %

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ASTM D638

50 %

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ISO 527-1/-2

dry

min. | nominal

Elongation at yield

5 - 15 %

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ASTM D638

11 %

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ISO 527-1/-2

dry

Flexural modulus

1.0 - 1.2 GPa

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ASTM D790

Flexural strength

20.7 - 34.5 MPa

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ASTM D790

at 5% strain

Hardness, Shore D

70 - 75 [-]

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ASTM D2240

Impact strength, Charpy notched

-30 °C

5 kJ/m²

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ISO 179/1eA

dry

No Break at 23°C

Impact strength, Charpy notched, ASTM

23 °C

214 J/m

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ASTM D256

min.

Impact strength, Charpy unnotched, ASTM

No Break at 23°C

ASTM D256

Tensile strength

27.6 - 48.3 MPa

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ASTM D638

Yield strength

31 - 41.4 MPa

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ASTM D638

40 MPa

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ISO 527-1/-2

dry

Thermal

PropertyValueTesting StandardConditionPressureComment

Coefficient of thermal expansion

0.000126 - 0.000185 1/K

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ASTM D696

0.00016 1/K

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ISO 11359-1/-2

dry

Glass transition temperature

-43 °C

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ISO 11357-1/-2

dry

10°C/min

-40.6 - -38.3 °C

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ASTM D7028

Heat deflection temperature

38 - 55 °C

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ASTM D648

2 MPa

248 °F/hr

46 °C

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ISO 75-1/-2

dry

2 MPa

60 - 75 °C

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ASTM D648

0.45 MPa

248 °F/hr

114 °C

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ISO 75-1/-2

dry

0.45 MPa

Melting point

155 - 160 °C

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ASTM D3418

158 °C

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ISO 11357-1/-3

dry

10°C/min

Relative temperature index, electrical

140 °C

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UL 746B

Relative temperature index, mechanical strength

140 °C

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UL 746B

Thermal decomposition in air

375 °C

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TGA

1% wt. loss

Thermal decomposition in nitrogen

410 °C

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TGA

1% wt. loss

Vicat softening temperature

107 °C

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ISO 306

50°C/h 50N

Flammability

At thickness 1.5 mm IEC 60695-11-10: V-0, At thickness 0.8 mm IEC 60695-11-10: V-0 and yellow card available

Electrical

PropertyValueConditionTesting StandardFrequency

Comparative tracking index

600 V

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dry

IEC 60112

Dielectric constant

3.5 - 10.2 [-]

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ASTM D150

1KHz

6.5 [-]

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dry

IEC 60250

1MHz

10.5 [-]

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dry

IEC 60250

100Hz

Dielectric strength

21 kV/mm

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dry

IEC 60243-1

51.2 - 63 kV/mm

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ASTM D149

Dissipation factor

0.01 - 0.22 [-]

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ASTM D150

100KHz

0.038 [-]

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dry

IEC 60250

100Hz

0.234 [-]

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dry

IEC 60250

1MHz

Surface resistivity

1e+13 Ω/sq

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cond.

IEC 60093

Volume resistivity

2e+14 Ω·cm

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dry

IEC 60093

2.9e+14 - 3.2e+14 Ω·cm

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65% RH

ASTM D257

Optical

PropertyValueTesting StandardComment

Refractive index

1 [-]

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ASTM D542

sodium D line

Rheological Properties

PropertyValueTesting StandardConditionComment

Melt mass-flow rate

3 - 8 g/10min

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ASTM D1238

230°C/12.5kg

Melt viscosity

2300 - 2700 Pa·s

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ASTM D3835

Melt volume-flow rate

1.1 cm³/10min

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ISO 1133

dry

230°C/5kg

Technological properties

Property
Application areas

Chemical Process Industry,Chemical Process Industry - High Purity Piping,Chemical Process Industry - Stock Shapes,Tubing and Hoses,Performance Wire,Plenum Cable,PVDF Cable Jacketing

Processing methods

Compression Molding:

  • Molding temperature (°C) ISO 293: 225
  • Molding time (min) ISO 293: 3
  • DeMolding temperature (°C) ISO 293: 120