HDPE vs. PEEK

Both HDPE and PEEK are thermoplastics. There are 10 material properties with values for both materials. Properties with values for just one material (19, in this case) are not shown.

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

High Density Polyethylene (HDPE)Polyetheretherketone (PEEK)

Metric UnitsUS Customary Units

Material Properties

Density, g/cm³		1.0 to 1.3
Density, g/cm³		1.3 to 1.5

Elongation at Break, %		2.5 to 100
Elongation at Break, %		1.6 to 43

Flexural Modulus, GPa		4.0 to 7.5
Flexural Modulus, GPa		3.8 to 19

Impact Strength: Notched Izod, J/m		50 to 260
Impact Strength: Notched Izod, J/m		78 to 120

Maximum Temperature: Mechanical, °C		90
Maximum Temperature: Mechanical, °C		330

Specific Heat Capacity, J/kg-K		1330 to 2400
Specific Heat Capacity, J/kg-K		1390 to 1700

Strength to Weight: Axial, points		6.9 to 17
Strength to Weight: Axial, points		20 to 41

Strength to Weight: Bending, points		19 to 32
Strength to Weight: Bending, points		36 to 55

Tensile Strength: Ultimate (UTS), MPa		24 to 80
Tensile Strength: Ultimate (UTS), MPa		97 to 200

Water Absorption At Saturation, %		0.1 to 0.3
Water Absorption At Saturation, %		0.22 to 0.5

HDPE vs. PEEK

Material Properties

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