Comparison
PPA Standard vs PEEK
A side-by-side comparison of Polyphthalamide Standard and Polyether Ether Ketone.
Physical
Density
1.25-1.35 g/cm³
1.32 g/cm³
Water Absorption (24h)
0.4-0.8 %
0.15 %
Transparency
Opaque
Opaque (amber)
Shrinkage
0.5-1.5 %
1.1 – 1.4 %
Mechanical
Young's Modulus
3.0-10.0 GPa (depending on filler)
3.6 GPa
Tensile Strength
70-150 MPa
100 MPa
Elongation at Break
5-50 %
50 %
Impact Strength (Izod)
10-40 kJ/m
55 J/m
Flexural Strength
—
170 MPa
Thermal
Glass Transition Temperature
100-150 °C
143 °C
Melting Point
300-320 °C
343 °C
Continuous Service Temperature
120-170 °C
260 °C
Heat Deflection Temperature
150-250 °C (1.8 MPa)
160 °C
Electrical
Dielectric Constant
3.8-4.5
3.2
Volume Resistivity
10^10-10^12 Ohm-cm
10¹⁶ Ω·cm
Dielectric Strength
15-20 kV/mm
—
Chemical resistance
Acids
Good
Excellent
Bases
Good
Excellent
Solvents
Good
Excellent
UV Resistance
Fair
Fair
Hydrolysis (steam)
—
Excellent
Sustainability
Recyclability
Recyclable
Recyclable (specialty)
Recycling Code
7 (Other)
7
Carbon Footprint
Moderate to High
~30 kg CO₂e / kg