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PVDF vs. PS

Both PVDF and PS are thermoplastics. There are 23 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

For each property being compared, the top bar is PVDF and the bottom bar is PS.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 1.1
1.9 to 2.9
Elongation at Break, % 200
1.8 to 40
Flexural Strength, MPa 75
62 to 80
Impact Strength: Notched Izod, J/m 180
19 to 45
Tensile Strength: Ultimate (UTS), MPa 49
32 to 44

Thermal Properties

Glass Transition Temperature, °C -40
100
Maximum Temperature: Autoignition, °C 640
360 to 420
Maximum Temperature: Decomposition, °C 440
320 to 330
Maximum Temperature: Mechanical, °C 140
70
Specific Heat Capacity, J/kg-K 1120
1250 to 1400
Thermal Conductivity, W/m-K 0.12
0.14 to 0.22
Thermal Expansion, µm/m-K 120
80 to 98

Electrical Properties

Dielectric Strength (Breakdown Potential), kV/mm 10
18 to 20
Electrical Resistivity Order of Magnitude, 10x Ω-m 12
14 to 15

Otherwise Unclassified Properties

Density, g/cm3 1.8
1.0
Limiting Oxygen Index (LOI), % 49
18
Water Absorption After 24 Hours, % 0
0.040 to 0.080

Common Calculations

Stiffness to Weight: Axial, points 0.35
1.0 to 1.5
Stiffness to Weight: Bending, points 20
40 to 45
Strength to Weight: Axial, points 7.8
8.5 to 12
Strength to Weight: Bending, points 17
22 to 26
Thermal Diffusivity, mm2/s 0.061
0.11 to 0.15
Thermal Shock Resistance, points 27
11 to 15