PVF vs. FEP

Both PVF and FEP are thermoplastics. There are 15 material properties with values for both materials. Properties with values for just one material (18, in this case) are not shown.

For each property being compared, the top bar is PVF and the bottom bar is FEP.

Polyvinyl Fluoride (PVF)Fluorinated Ethylene Propylene (FEP)

Metric UnitsUS Customary Units

Mechanical Properties

Flexural Strength, MPa		90
Flexural Strength, MPa		24

Tensile Strength: Ultimate (UTS), MPa		65
Tensile Strength: Ultimate (UTS), MPa		20

Thermal Properties

Glass Transition Temperature, °C		-20
Glass Transition Temperature, °C		60

Heat Deflection Temperature At 1.82 MPa (264 psi), °C		90
Heat Deflection Temperature At 1.82 MPa (264 psi), °C		50

Maximum Temperature: Autoignition, °C		480
Maximum Temperature: Autoignition, °C		630

Maximum Temperature: Mechanical, °C		110
Maximum Temperature: Mechanical, °C		200

Melting Onset (Solidus), °C		230
Melting Onset (Solidus), °C		260

Specific Heat Capacity, J/kg-K		1300
Specific Heat Capacity, J/kg-K		1170

Thermal Conductivity, W/m-K		0.13
Thermal Conductivity, W/m-K		0.22

Thermal Expansion, µm/m-K		100
Thermal Expansion, µm/m-K		95

Otherwise Unclassified Properties

Density, g/cm³		1.4
Density, g/cm³		2.1

Limiting Oxygen Index (LOI), %		23
Limiting Oxygen Index (LOI), %		80

Common Calculations

Strength to Weight: Axial, points		13
Strength to Weight: Axial, points		2.6

Strength to Weight: Bending, points		26
Strength to Weight: Bending, points		7.6

Thermal Diffusivity, mm²/s		0.071
Thermal Diffusivity, mm²/s		0.088

PVF vs. FEP

Mechanical Properties

Thermal Properties

Otherwise Unclassified Properties

Common Calculations

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