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PPSU vs. PEEK

Both PPSU and PEEK are thermoplastics. There are 26 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.

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

Metric UnitsUS Customary Units

Mechanical Properties

Compressive (Crushing) Strength, MPa 140
120 to 300
Elastic (Young's, Tensile) Modulus, GPa 3.6
4.0 to 24
Elongation at Break, % 26
1.6 to 43
Flexural Modulus, GPa 4.7
3.8 to 19
Flexural Strength, MPa 130
150 to 330
Impact Strength: Notched Izod, J/m 80
78 to 120
Rockwell R Hardness 130
120
Tensile Strength: Ultimate (UTS), MPa 95
97 to 200

Thermal Properties

Glass Transition Temperature, °C 220
240
Heat Deflection Temperature At 1.82 MPa (264 psi), °C 210
160 to 300
Maximum Temperature: Autoignition, °C 580
600
Maximum Temperature: Decomposition, °C 560
570
Maximum Temperature: Mechanical, °C 160
330
Specific Heat Capacity, J/kg-K 970
1390 to 1700
Thermal Conductivity, W/m-K 0.24
0.25 to 0.93
Thermal Expansion, µm/m-K 45
15 to 52

Electrical Properties

Electrical Resistivity Order of Magnitude, 10x Ω-m 14
3.0 to 14

Otherwise Unclassified Properties

Density, g/cm3 1.4
1.3 to 1.5
Limiting Oxygen Index (LOI), % 38
38
Water Absorption After 24 Hours, % 0.44
0.060 to 0.3

Common Calculations

Stiffness to Weight: Axial, points 1.4
1.5 to 10
Stiffness to Weight: Bending, points 36
36 to 73
Strength to Weight: Axial, points 19
20 to 41
Strength to Weight: Bending, points 33
36 to 55
Thermal Diffusivity, mm2/s 0.17
0.1 to 0.51
Thermal Shock Resistance, points 42
34 to 57