Comparison

PVC Rigid Pipe vs PEEK

A side-by-side comparison of Rigid Polyvinyl Chloride for Pipe Applications and Polyether Ether Ketone.

Physical

Density
1.30-1.45 g/cm³
1.32 g/cm³
Water Absorption (24h)
0.1-0.4 %
0.15 %
Transparency
Opaque
Opaque (amber)
Shrinkage
0.5-1.5 %
1.1 – 1.4 %

Mechanical

Young's Modulus
2.5-4.0 GPa
3.6 GPa
Tensile Strength
45-60 MPa
100 MPa
Elongation at Break
5-20 %
50 %
Impact Strength (Izod)
20-50 J/m
55 J/m
Flexural Strength
170 MPa

Thermal

Glass Transition Temperature
70-80 °C
143 °C
Melting Point
N/A (degrades above 160°C)
343 °C
Continuous Service Temperature
50-60 °C
260 °C
Heat Deflection Temperature
60-70 °C
160 °C

Electrical

Dielectric Constant
3.0-3.5
3.2
Volume Resistivity
10¹¹-10¹³ Ω⋅cm
10¹⁶ Ω·cm
Dielectric Strength
15-25 kV/mm

Chemical resistance

Acids
Excellent resistance
Excellent
Bases
Excellent resistance
Excellent
Solvents
Attacked by ketones, esters, chlorinated and aromatic hydrocarbons
Excellent
UV Resistance
Poor (requires stabilization)
Fair
Hydrolysis (steam)
Excellent

Sustainability

Recyclability
Recyclable
Recyclable (specialty)
Recycling Code
3 (PVC)
7
Carbon Footprint
Moderate to High
~30 kg CO₂e / kg