Comparison
PA11 Flexible vs PEEK
A side-by-side comparison of Polyamide 11 Flexible and Polyether Ether Ketone.
Physical
Density
1.03-1.05 g/cm³
1.32 g/cm³
Water Absorption (24h)
0.5-1.0 %
0.15 %
Transparency
Opaque
Opaque (amber)
Shrinkage
1.5-2.5 %
1.1 – 1.4 %
Mechanical
Young's Modulus
0.8-1.3 GPa
3.6 GPa
Tensile Strength
45-55 MPa
100 MPa
Elongation at Break
300-450 %
50 %
Impact Strength (Izod)
60-120 kJ/m
55 J/m
Flexural Strength
—
170 MPa
Thermal
Glass Transition Temperature
30-40 °C
143 °C
Melting Point
180-190 °C
343 °C
Continuous Service Temperature
70-90 °C
260 °C
Heat Deflection Temperature
30-50 °C (1.8 MPa)
160 °C
Electrical
Dielectric Constant
3.2-3.8
3.2
Volume Resistivity
10^11-10^13 Ohm-cm
10¹⁶ Ω·cm
Dielectric Strength
18-25 kV/mm
—
Chemical resistance
Acids
Fair
Excellent
Bases
Good
Excellent
Solvents
Good (oils, greases, fuels)
Excellent
UV Resistance
Good
Fair
Hydrolysis (steam)
—
Excellent
Sustainability
Recyclability
Recyclable
Recyclable (specialty)
Recycling Code
7 (Other)
7
Carbon Footprint
Lower than petroleum-based PA
~30 kg CO₂e / kg