MDPE vs. PETG

Both MDPE and PETG are thermoplastics. There are 10 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 MDPE and the bottom bar is PETG.

Medium Density Polyethylene (MDPE)Glycol-Modified Polyethylene Terephthalate (PETG, PET-G)

Metric UnitsUS Customary Units

Material Properties

Density, g/cm³		0.93
Density, g/cm³		1.3

Dielectric Constant (Relative Permittivity) At 1 Hz		2.3
Dielectric Constant (Relative Permittivity) At 1 Hz		2.6

Elastic (Young's, Tensile) Modulus, GPa		0.6
Elastic (Young's, Tensile) Modulus, GPa		2.2

Glass Transition Temperature, °C		-80
Glass Transition Temperature, °C		81

Melting Onset (Solidus), °C		120
Melting Onset (Solidus), °C		140

Specific Heat Capacity, J/kg-K		2350
Specific Heat Capacity, J/kg-K		1200

Stiffness to Weight: Axial, points		0.36
Stiffness to Weight: Axial, points		1.0

Stiffness to Weight: Bending, points		30
Stiffness to Weight: Bending, points		34

Thermal Conductivity, W/m-K		0.4
Thermal Conductivity, W/m-K		0.29

Thermal Diffusivity, mm²/s		0.18
Thermal Diffusivity, mm²/s		0.19

MDPE vs. PETG

Material Properties

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