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PPSU vs. PBT

Both PPSU and PBT are thermoplastics. There are 17 material properties with values for both materials. Properties with values for just one material (16, in this case) are not shown.

For each property being compared, the top bar is PPSU and the bottom bar is PBT.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 3.6
2.7 to 8.7
Elongation at Break, % 26
2.5 to 43
Flexural Modulus, GPa 4.7
2.6 to 9.1
Flexural Strength, MPa 130
79 to 210
Tensile Strength: Ultimate (UTS), MPa 95
58 to 140

Thermal Properties

Glass Transition Temperature, °C 220
40
Heat Deflection Temperature At 1.82 MPa (264 psi), °C 210
4.0
Heat Deflection Temperature At 455 kPa (66 psi), °C 220
160
Maximum Temperature: Autoignition, °C 580
380
Maximum Temperature: Decomposition, °C 560
380
Specific Heat Capacity, J/kg-K 970
1040 to 1200

Otherwise Unclassified Properties

Density, g/cm3 1.4
1.3 to 1.5
Limiting Oxygen Index (LOI), % 38
20

Common Calculations

Stiffness to Weight: Axial, points 1.4
1.1 to 3.2
Stiffness to Weight: Bending, points 36
35 to 45
Strength to Weight: Axial, points 19
12 to 25
Strength to Weight: Bending, points 33
25 to 38