Comparison
Tough SLA Resin vs PETG
A side-by-side comparison of Tough Photopolymer Resin for SLA and Polyethylene Terephthalate Glycol.
Physical
Density
1.10-1.18 g/cm³
1.27 g/cm³
Water Absorption (24h)
0.4-0.8 %
0.13 %
Transparency
Opaque
Transparent
Shrinkage
Moderate (1-3%)
0.2 – 0.5 %
Mechanical
Young's Modulus
2.0-3.0 GPa
2.1 GPa
Tensile Strength
40-55 MPa
50 MPa
Elongation at Break
5-15 %
120 %
Impact Strength (Izod)
5-10 kJ/m²
100 J/m
Flexural Strength
—
70 MPa
Thermal
Glass Transition Temperature
60-75 °C
80 °C
Melting Point
N/A (cross-linked polymer)
—
Continuous Service Temperature
50-65 °C
65 °C
Heat Deflection Temperature
55-65 °C @ 0.45 MPa
70 °C
CTE
—
68 × 10⁻⁶ /K
Electrical
Dielectric Constant
3.2-3.8
3.3
Volume Resistivity
10¹¹-10¹³ Ω·cm
10¹⁴ Ω·cm
Dielectric Strength
16-22 MV/m
—
Chemical resistance
Acids
Fair resistance
Good
Bases
Poor resistance
Fair
Solvents
Attacked by strong solvents.
—
UV Resistance
Poor
Fair
Alcohols
—
Good
Oils
—
Good
Sustainability
Recyclability
Not Recyclable
Recyclable
Recycling Code
N/A
1
Carbon Footprint
High
~2.7 kg CO₂e / kg
Bio-based Content
—
0 %