Comparison
Melamine-Formaldehyde Hard vs PETG
A side-by-side comparison of Melamine-Formaldehyde Resin and Polyethylene Terephthalate Glycol.
Physical
Density
1.50-1.60 g/cm³
1.27 g/cm³
Water Absorption (24h)
0.5-1.5 %
0.13 %
Transparency
White to Light Color
Transparent
Shrinkage
4-7 %
0.2 – 0.5 %
Mechanical
Young's Modulus
8-15 GPa
2.1 GPa
Tensile Strength
60-90 MPa
50 MPa
Elongation at Break
0.5-1.5 %
120 %
Impact Strength (Izod)
4-10 J/m
100 J/m
Flexural Strength
—
70 MPa
Thermal
Glass Transition Temperature
Undetermined (Degradation)
80 °C
Melting Point
N/A
—
Continuous Service Temperature
80-130 °C
65 °C
Heat Deflection Temperature
70-120 °C
70 °C
CTE
—
68 × 10⁻⁶ /K
Electrical
Dielectric Constant
5.0-6.5
3.3
Volume Resistivity
10^11-10^14 Ohm-cm
10¹⁴ Ω·cm
Dielectric Strength
12-20 kV/mm
—
Chemical resistance
Acids
Moderate resistance
Good
Bases
Moderate resistance
Fair
Solvents
Resistant to alcohols and hydrocarbons
—
UV Resistance
Moderate
Fair
Alcohols
—
Good
Oils
—
Good
Sustainability
Recyclability
Difficult
Recyclable
Recycling Code
N/A
1
Carbon Footprint
Moderate
~2.7 kg CO₂e / kg
Bio-based Content
—
0 %