Comparison
SAN Standard vs PEEK
A side-by-side comparison of Styrene Acrylonitrile Standard and Polyether Ether Ketone.
Physical
Density
1.07-1.09 g/cm³
1.32 g/cm³
Water Absorption (24h)
0.1-0.3 %
0.15 %
Transparency
Transparent
Opaque (amber)
Shrinkage
0.3-0.6 %
1.1 – 1.4 %
Mechanical
Young's Modulus
2.8-3.5 GPa
3.6 GPa
Tensile Strength
55-70 MPa
100 MPa
Elongation at Break
3-6 %
50 %
Impact Strength (Izod)
5-10 kJ/m
55 J/m
Flexural Strength
—
170 MPa
Thermal
Glass Transition Temperature
95-105 °C
143 °C
Melting Point
N/A (amorphous)
343 °C
Continuous Service Temperature
60-80 °C
260 °C
Heat Deflection Temperature
70-90 °C (1.8 MPa)
160 °C
Electrical
Dielectric Constant
2.7-3.0
3.2
Volume Resistivity
10^13-10^15 Ohm-cm
10¹⁶ Ω·cm
Dielectric Strength
18-22 kV/mm
—
Chemical resistance
Acids
Good
Excellent
Bases
Poor
Excellent
Solvents
Poor
Excellent
UV Resistance
Poor
Fair
Hydrolysis (steam)
—
Excellent
Sustainability
Recyclability
Recyclable
Recyclable (specialty)
Recycling Code
6 (PS) or 7 (Other)
7
Carbon Footprint
Moderate
~30 kg CO₂e / kg