PHB vs. PTFE

Both PHB and PTFE are thermoplastics. There are 11 material properties with values for both materials. Properties with values for just one material (12, in this case) are not shown.

For each property being compared, the top bar is PHB and the bottom bar is PTFE.

Polyhydroxybutyrate (PHB)Polytetrafluoroethylene (PTFE)

Metric UnitsUS Customary Units

Mechanical Properties

Elongation at Break, %		7.5
Elongation at Break, %		75 to 300

Flexural Strength, MPa		20
Flexural Strength, MPa		13 to 50

Tensile Strength: Ultimate (UTS), MPa		30
Tensile Strength: Ultimate (UTS), MPa		13 to 25

Thermal Properties

Heat Deflection Temperature At 1.82 MPa (264 psi), °C		60
Heat Deflection Temperature At 1.82 MPa (264 psi), °C		66 to 70

Maximum Temperature: Mechanical, °C		120
Maximum Temperature: Mechanical, °C		260 to 270

Melting Onset (Solidus), °C		180
Melting Onset (Solidus), °C		330 to 340

Electrical Properties

Electrical Resistivity Order of Magnitude, 10^x Ω-m		14
Electrical Resistivity Order of Magnitude, 10^x Ω-m		2.0 to 18

Otherwise Unclassified Properties

Density, g/cm³		1.3
Density, g/cm³		2.1 to 2.3

Water Absorption After 24 Hours, %		0.75
Water Absorption After 24 Hours, %		0.0093 to 0.050

Common Calculations

Strength to Weight: Axial, points		6.7
Strength to Weight: Axial, points		1.7 to 3.2

Strength to Weight: Bending, points		17
Strength to Weight: Bending, points		5.7 to 8.7