PBT Unfilled

PBT Unfilled


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

Key Material Features: This material is beneficial in applications requiring impact resistance, chemicals resistance, wear resistance, low coefficient of friction, and low moisture absorption.

Other Considerations: This material has higher impact resistance than PET.


Property Value Typical ASTM Test
Chemical Designation (PBT) Polybutylene Terephthalate
Trade Names (®, ™) Hydex 4101 PBT
Color White, Black
Density (g/cm^3) 1.31 D 792


Property Value Typical ASTM Test
Modulus of Elasticity (Tensile Test) (psi) 430000 D 638
Tensile Strength at Yield (psi) 9400 D 638
Elongation at Yield (%) 6 D 638
Elongation at Break (%) 50 D 638
Flexural Strength (psi) 13000 D 790
Modulus of Elasticity (Flexural Test) (psi) 430000 D 790
Compression Strength: 10% Strain (psi) 11500 D 695
Compression Strength: 1% Strain (psi) 2800 D 695
Compression Modulus (psi) 315000 D 695
Impact Strength (Izod) (ft-lbs/in) 0.7 D 256
Hardness (M) 80 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) 430 D 3418
Deflection Temperature (°F) (66 psi) 310 D 648
Deflection Temperature (°F) (264 psi) 200 D 648
Service Temperature Continuous (°F) 221
Service Temperature Minimal (°F) -29
Thermal Expansion (CLTE) (in/in/°F) 6.10E-5 D 696


Property Value Typical ASTM Test
Specific Surface Resistance (Ω/square) 1.00E13 D 257
Dielectric Strength (V/mil) 400 D 149
Dielectric Constant (1MHz) 3 D 150


Property Value Typical ASTM Test
Moisture Absorption (%) (24 Hours) 0.02 D 570
Moisture Absorption (%) (Saturated) 0.25 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.