Kynar Flex® 2850 PC

Alternative and trade names
PVDF
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Description

Kynar Flex® resins are fluorinated thermoplastic copolymers.

Kynar Flex® 2850 PC resin powder coating is a semi-crystalline copolymer of vinylidene fluoride and hexafluoropropylene. It has a special particle size making it ideal for spray applied powder coating on metal substrates for abrasion and corrosion protection

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

1.78 g/cm³

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ISO 1183

dry

Limiting oxygen index

43 %

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ASTM D2863, ISO 4589-1/-2

dry

Water absorption

0.03 %

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Sim. to ISO 62

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

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

10 %

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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 - 27.6 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, ASTM

23 °C

160 - 427 J/m

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ASTM D256

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 StandardPressureConditionComment

Coefficient of thermal expansion

0.000126 - 0.000185 1/K

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ASTM D696

Glass transition temperature

-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

2 MPa

dry

60 - 75 °C

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ASTM D648

0.45 MPa

248 °F/hr

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

Specific heat capacity

745 - 958 J/(kg·K)

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DSC

Thermal conductivity

0.144 - 0.18 W/(m·K)

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ASTM D433

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

Flammability

At thickness 0.8 mm IEC 60695-11-10: V-0

Electrical

PropertyValueFrequencyTesting StandardCondition

Dielectric constant

3.5 - 10.2 [-]

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1KHz

ASTM D150

Dielectric strength

51.2 - 63 kV/mm

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ASTM D149

Dissipation factor

0.01 - 0.22 [-]

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100KHz

ASTM D150

Volume resistivity

2e+14 Ω·cm

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ASTM D257

65% RH

2e+14 Ω·cm

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IEC 60093

dry

Optical

PropertyValueTesting StandardComment

Refractive index

1 [-]

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ASTM D542

sodium D line

Rheological Properties

PropertyValueTesting StandardConditionComment

Melt mass-flow rate

8 - 25 g/10min

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ASTM D1238

230°C/3.8kg

Melt viscosity

400 - 800 Pa·s

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ASTM D3835

Melt volume-flow rate

7.5 cm³/10min

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ISO 1133

dry

230°C/3.8kg

Technological properties

Property
Application areas

Metal Tube Coating,Chemical Process Industry,Chemical Process Industry - Coating of Chemical Pumps,Chemical Process Industry - Coating of Chemical Valves,Chemical Process Industry - Coating of Chemical Vessels