PETG
PETG Overview
What is the Material: PETG is an amorphous material.
Key Material Features: This material is beneficial in applications requiring impact resistance, and transparency.
Other Considerations: Is has greater impact resistance than acrylic and it is easier to work with than polycarbonate. In addition, PETG is always food grade and polycarbonate is not. Polycarbonate can have a food grade coating, but the material itself is not food grade.
Physical
| Property | Value | Typical ASTM Test |
|---|---|---|
| Chemical Designation | (PETG) Polyethylene Terephthalate Glycol Modified | |
| Trade Names (®, ™) | Vivak, Spectar | |
| Color | Transparent | |
| Density (g/cm^3) | 1.27 | D 792 |
Mechanical
| Property | Value | Typical ASTM Test |
|---|---|---|
| Modulus of Elasticity (Tensile Test) (psi) | 320300 | D 638 |
| Tensile Strength at Yield (psi) | 7700 | D 638 |
| Tensile Strength at Break (psi) | 3800 | D 638 |
| Elongation at Yield (%) | 4.8 | D 638 |
| Elongation at Break (%) | 50 | D 638 |
| Flexural Strength (psi) | 11200 | D 790 |
| Modulus of Elasticity (Flexural Test) (psi) | 310000 | D 790 |
| Compression Strength: 10% Strain (psi) | 8000 | D 695 |
| Impact Strength (Izod) (ft-lbs/in) | 1.7 | D 256 |
| Hardness (R) | 115 | D 785 |
Thermal
| Property | Value | Typical ASTM Test |
|---|---|---|
| Vicat Softening Point (°F) | 181 | |
| Glass Transistion Temperature (°F) | 178 | D 3418 |
| Deflection Temperature (°F) (66 psi) | 164 | D 648 |
| Deflection Temperature (°F) (264 psi) | 157 | D 648 |
| Thermal Expansion (CLTE) (in/in/°F) | 3.80E-5 | D 696 |
| Thermal Conductivity (BTU-in/hr-ft^2-°F) | 0.13 |
Electrical
| Property | Value | Typical ASTM Test |
|---|---|---|
| Specific Surface Resistance (Ω/square) | 1.00E16 | D 257 |
| Volume Resistivity (Ω*cm) | 1.00E15 | D 257 |
| Dielectric Strength (V/mil) | 410 | D 149 |
| Dissipation Factor (1MHz) | 0.02 | D 150 |
| Dielectric Constant (1MHz) | 2.4 | D 150 |
Other
| Property | Value | Typical ASTM Test |
|---|---|---|
| Moisture Absorption (%) (24 Hours) | 0.2 | D 570 |
| Light Transmission (%) | 86 | D1008 |
| Flammability | HB |
The data stated are typical values intended for reference and comparison purposes only. The data should not be used as a basis for design specifications or quality control. The information is provided as a guide to the best of our knowledge and given without obligation or liability. Testing under individual application circumstances is recommended.