Comparison

SAN Standard vs PETG

A side-by-side comparison of Styrene Acrylonitrile Standard and Polyethylene Terephthalate Glycol.

Property

SAN Standard

PETG

Physical

Density

1.07-1.09 g/cm³

1.27 g/cm³

Water Absorption (24h)

0.1-0.3 %

0.13 %

Transparency

Transparent

Shrinkage

0.3-0.6 %

0.2 – 0.5 %

Mechanical

Young's Modulus

2.8-3.5 GPa

2.1 GPa

Tensile Strength

55-70 MPa

50 MPa

Elongation at Break

3-6 %

120 %

Impact Strength (Izod)

5-10 kJ/m

100 J/m

Flexural Strength

—

70 MPa

Thermal

Glass Transition Temperature

95-105 °C

80 °C

Melting Point

N/A (amorphous)

—

Continuous Service Temperature

60-80 °C

65 °C

Heat Deflection Temperature

70-90 °C (1.8 MPa)

70 °C

CTE

—

68 × 10⁻⁶ /K

Electrical

Dielectric Constant

2.7-3.0

3.3

Volume Resistivity

10^13-10^15 Ohm-cm

10¹⁴ Ω·cm

Dielectric Strength

18-22 kV/mm

—

Chemical resistance

Acids

Good

Bases

Poor

Fair

Solvents

Poor

—

UV Resistance

Poor

Fair

Alcohols

—

Good

Oils

—

Good

Sustainability

Recyclability

Recyclable

Recycling Code

6 (PS) or 7 (Other)

Carbon Footprint

Moderate

~2.7 kg CO₂e / kg

Bio-based Content

—

0 %