Comparison
Castable SLA Resin vs PEEK
A side-by-side comparison of Castable Photopolymer Resin for SLA and Polyether Ether Ketone.
Physical
Density
1.15-1.25 g/cm³
1.32 g/cm³
Water Absorption (24h)
0.3-0.6 %
0.15 %
Transparency
Opaque (often brown or grey)
Opaque (amber)
Shrinkage
Moderate (1-3%)
1.1 – 1.4 %
Mechanical
Young's Modulus
1.0-2.0 GPa
3.6 GPa
Tensile Strength
20-35 MPa
100 MPa
Elongation at Break
1-3 %
50 %
Impact Strength (Izod)
Very Low
55 J/m
Flexural Strength
—
170 MPa
Thermal
Glass Transition Temperature
50-60 °C
143 °C
Melting Point
N/A (cross-linked polymer)
343 °C
Continuous Service Temperature
40-50 °C
260 °C
Heat Deflection Temperature
40-50 °C @ 0.45 MPa
160 °C
Electrical
Dielectric Constant
3.0-3.5
3.2
Volume Resistivity
10¹³-10¹⁵ Ω·cm
10¹⁶ Ω·cm
Dielectric Strength
15-20 MV/m
—
Chemical resistance
Acids
Fair resistance
Excellent
Bases
Poor resistance
Excellent
Solvents
Attacked by strong solvents.
Excellent
UV Resistance
Poor
Fair
Hydrolysis (steam)
—
Excellent
Sustainability
Recyclability
Not Recyclable
Recyclable (specialty)
Recycling Code
N/A
7
Carbon Footprint
High
~30 kg CO₂e / kg