PET Unfilled

PET Unfilled


What is the Material: PET Unfilled is a semi-crystalline material.

Key Material Features: This material is beneficial in applications requiring toughness, low friction, chemical resistance, abrasion resistance, and low moisture absorption.

Other Considerations: This material maintains more strength at higher temperatures than nylon and acetal. In addition, PET lacks center-line porosity, often found in acetal homopolymer. Also this material is attacked by hot water/steam.


Property Value Typical ASTM Test
Chemical Designation (PET) Polyethylene Terephthalate
Trade Names (®, ™) Tecapet, Ertalyte, Sustadur
Color Natural and Black
Density (g/cm^3) 1.41 D 792


Property Value Typical ASTM Test
Modulus of Elasticity (Tensile Test) (psi) 470000 D 638
Tensile Strength at Yield (psi) 10000 D 638
Elongation at Yield (%) 4 D 638
Elongation at Break (%) 12 D 638
Flexural Strength (psi) 15500 D 790
Modulus of Elasticity (Flexural Test) (psi) 470000 D 790
Compression Strength: 10% Strain (psi) 14000 D 695
Compression Strength: 1% Strain (psi) 3600 D 695
Compression Modulus (psi) 345000 D 695
Impact Strength (Izod) (ft-lbs/in) 0.53 D 256
Hardness (R) 125 D 785
Hardness (D) 87 D 785
Hardness (M) 93 D 785
Coefficient of Friction (Kinetic, 40 psi, 50 fpm) 0.25 D 3702
Coefficient of Friction (Static) 0.19 D 3702
Wear (K) Factor (in^3-min/ft-lbs-hr) (Against Steel, 40 psi, 50 fpm) 2.10E-8 D 3702


Property Value Typical ASTM Test
Melting Point (°F) 490 D 3418
Deflection Temperature (°F) (66 psi) 240 D 648
Deflection Temperature (°F) (264 psi) 175 D 648
Service Temperature Continuous (°F) 230
Service Temperature Intermittent (°F) 320
Thermal Expansion (CLTE) (in/in/°F) 3.90E-5 D 696
Thermal Conductivity (BTU-in/hr-ft^2-°F) 2.01
Specific Heat (BTU/lb-°F) 0.28


Property Value Typical ASTM Test
Specific Surface Resistance (Ω/square) 1.00E13 D 257
Volume Resistivity (Ω*cm) 1.00E15 D 257
Dielectric Strength (V/mil) 400 D 149
Dissipation Factor (60 Hz) 0.02 D 150
Dielectric Constant (1MHz) 3.1 D 150
Dielectric Constant (60 Hz and 50% RH) 3.4 D 150


Property Value Typical ASTM Test
Moisture Absorption (%) (24 Hours) 0.04 D 570
Moisture Absorption (%) (Saturated) 0.5 D 570
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.