Comparison
Acrylic (PMMA) vs PA66
A side-by-side comparison of Poly(methyl methacrylate) and Polyamide 6,6 (Nylon).
Physical
Density
1.18 g/cm³
1.14 g/cm³
Water Absorption (24h)
0.3 %
1.2 %
Transparency
Transparent (92%)
Opaque
Shrinkage
0.2 – 0.8 %
1.5 – 2.0 %
Mechanical
Young's Modulus
3.0 GPa
3.0 GPa (dry)
Tensile Strength
70 MPa
80 MPa
Flexural Strength
110 MPa
110 MPa
Impact Strength (Izod)
20 J/m
50 J/m
Elongation at Break
5 %
60 %
Thermal
Glass Transition Temperature
105 °C
70 °C
Continuous Service Temperature
80 °C
100 – 120 °C
Heat Deflection Temperature
95 °C
75 °C (unfilled)
Melting Point
—
255 – 265 °C
Electrical
Dielectric Constant
3.6
4.0
Volume Resistivity
10¹⁵ Ω·cm
10¹² Ω·cm
Chemical resistance
Acids
Good
Poor
Bases
Fair
Good
Alcohols
Poor
Good
Acetone
Attacks
—
UV Resistance
Excellent
Fair
Oils & Fuels
—
Excellent
Sustainability
Recyclability
Recyclable (chemical)
Recyclable
Recycling Code
7
7
Carbon Footprint
~5.4 kg CO₂e / kg
~7.4 kg CO₂e / kg
Bio-based Content
—
0 – 100 % (bio grades)