Comparison

PA6 Impact Modified vs PA66

A side-by-side comparison of Polyamide 6, Impact Modified and Polyamide 6,6 (Nylon).

Property

PA6 Impact Modified

PA66

Physical

Density

1.12-1.15 g/cm³

1.14 g/cm³

Water Absorption (24h)

1.5-2.5 %

1.2 %

Transparency

Opaque

Shrinkage

1.0-2.0 %

1.5 – 2.0 %

Mechanical

Young's Modulus

1.0-1.5 GPa

3.0 GPa (dry)

Tensile Strength

50-70 MPa

80 MPa

Elongation at Break

100-300 %

60 %

Impact Strength (Izod)

80-150 kJ/m

50 J/m

Flexural Strength

—

110 MPa

Thermal

Glass Transition Temperature

40-50 °C

70 °C

Melting Point

215-225 °C

255 – 265 °C

Continuous Service Temperature

80-100 °C

100 – 120 °C

Heat Deflection Temperature

50-80 °C (1.8 MPa)

75 °C (unfilled)

Electrical

Dielectric Constant

4.0-4.5

4.0

Volume Resistivity

10^10-10^12 Ohm-cm

10¹² Ω·cm

Dielectric Strength

15-20 kV/mm

—

Chemical resistance

Acids

Fair

Poor

Bases

Good

Solvents

Good

—

UV Resistance

Fair

Alcohols

—

Good

Oils & Fuels

—

Excellent

Sustainability

Recyclability

Recyclable

Recycling Code

7 (Other)

Carbon Footprint

Moderate

~7.4 kg CO₂e / kg

Bio-based Content

—

0 – 100 % (bio grades)