HDPE vs. FEP

Both HDPE and FEP are thermoplastics. There are 8 material properties with values for both materials. Properties with values for just one material (24, in this case) are not shown. Please note that the two materials have significantly dissimilar densities. This means that additional care is required when interpreting the data, because some material properties are based on units of mass, while others are based on units of area or volume.

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

Metric UnitsUS Customary Units

Material Properties

Density, g/cm³		1.0 to 1.3
Density, g/cm³		2.1

Elongation at Break, %		2.5 to 100
Elongation at Break, %		300

Flexural Modulus, GPa		4.0 to 7.5
Flexural Modulus, GPa		0.6

Maximum Temperature: Mechanical, °C		90
Maximum Temperature: Mechanical, °C		200

Specific Heat Capacity, J/kg-K		1330 to 2400
Specific Heat Capacity, J/kg-K		1170

Strength to Weight: Axial, points		6.9 to 17
Strength to Weight: Axial, points		2.6

Strength to Weight: Bending, points		19 to 32
Strength to Weight: Bending, points		7.6

Tensile Strength: Ultimate (UTS), MPa		24 to 80
Tensile Strength: Ultimate (UTS), MPa		20

HDPE vs. FEP

Material Properties

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