PETG vs. MDPE

Both PETG and MDPE 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 PETG and the bottom bar is MDPE.

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

Metric UnitsUS Customary Units

Material Properties

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

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

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

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

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

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

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

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

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

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

PETG vs. MDPE

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