Comparison
High-Performance Thermoplastic Vulcanizate (Santoprene) vs PEEK
A side-by-side comparison of Thermoplastic Vulcanizate (TPV) - Santoprene family and Polyether Ether Ketone.
Physical
Density
0.87 - 0.97 g/cm³
1.32 g/cm³
Water Absorption (24h)
0.1 - 0.3 %
0.15 %
Transparency
Opaque
Opaque (amber)
Shrinkage
1.0 - 2.5 %
1.1 – 1.4 %
Mechanical
Young's Modulus
0.01 - 0.05 GPa
3.6 GPa
Tensile Strength
10 - 25 MPa
100 MPa
Elongation at Break
300 - 600 %
50 %
Impact Strength (Izod)
Good
55 J/m
Flexural Strength
—
170 MPa
Thermal
Glass Transition Temperature
-50 to -30 °C
143 °C
Melting Point
N/A (crosslinked rubber particles in thermoplastic matrix)
343 °C
Continuous Service Temperature
-50 to 135 °C
260 °C
Heat Deflection Temperature
50 - 80 °C
160 °C
Electrical
Dielectric Constant
2.8 - 3.3
3.2
Volume Resistivity
10^13 - 10^15 Ohm-cm
10¹⁶ Ω·cm
Dielectric Strength
20 - 30 kV/mm
—
Chemical resistance
Acids
Good
Excellent
Bases
Good
Excellent
Solvents
Good resistance to water, mild acids/bases, and many automotive fluids; swells in many hydrocarbon solvents
Excellent
UV Resistance
Excellent
Fair
Hydrolysis (steam)
—
Excellent
Sustainability
Recyclability
Recyclable (thermoplastic processing)
Recyclable (specialty)
Recycling Code
7 (Other)
7
Carbon Footprint
Moderate
~30 kg CO₂e / kg