Hydex® is a trade name for Polybutalyene terephalate. Other trade names for Polybutalyene terephalate include Celanex®, Sustador, PBT, TECADUR™ PBT, Ultradur® and VALOX®.
| Mechanical | ASTM Test Method | Hydex 4101 PBT | Hydex 4101L (PTFE-Filled) | Units |
|---|---|---|---|---|
| Strength to Weight Ratio | - | - | - | ksi |
| Specific Gravity @73 F | D792 | 1.36 | 1.36 | - |
| Tensile Strength @73 F, (ult)/(yld) | D638 | 7,500 (yld) | 7,200 (yld) | psi |
| Tensile Modulus of Elasticity @73 F | D638 | 377,000 | 380,000 | psi |
| Tensile Elongation at Break @73 F | D638 | 200 | 40 | % |
| Flexural Strength @73 F | D790 | 12,000 | - | psi |
| Flexural Modulus of Elasticity @73 F | D790 | 420,000 | 390,000 | psi |
| Shear Strength @73 F | D732 | - | - | psi |
| Comprehensive Strength, (% Deformation) @73 F | D695 | 12,800 (10) | - | psi |
| Comprehensive Modulus of Elasticity @73 F | D695 | - | - | psi |
| Hardness, Rockwell, Scale as noted @73 F | D785 | M72 | - | - |
| Hardness, Durometer, Shore D @73 F | D2240 | - | - | - |
| Izod Impact, (Notched) @73 F | D256 Type A | 1.0 | 0.7 | ft-lb/in of notch |
| Coefficient of Friction, (Dry vs Steel) Dynamic | - | - | - | - |
| Limiting PV, (with 4 to 1 factor of safety applied) | - | - | - | psi-ft/min |
| Thermal | ASTM Test Method | Hydex 4101 PBT | Hydex 4101L (PTFE-Filled) | Units |
|---|---|---|---|---|
| Coefficient of Linear Thermal Expansion @73 F | E-831 (TMA) | 7.8 E-05 | - | in/in/F |
| Heat Deflection Temperature @264 psi | D648 | 200 | 195 | F |
| Tg-Glass transition termperature, (Amorphous) | D3418 | - | - | F |
| Melting Point, (VS=Vicat Softening Temp.) | D3418 | 428 | - | F |
| Continuous Service Temperature in Air, (Max.) | - | 221 | 221 | F |
| Thermal Conductivity | - | - | - | BTU-in/hr-ft2-F |
| Electric | ASTM Test Method | Hydex 4101 PBT | Hydex 4101L (PTFE-Filled) | Units |
|---|---|---|---|---|
| Dielectric Strength, Short Term | D149 | 400 | - | Volts/mil |
| Volume Resistivity | D257 | 1.0 E+16 | - | ohm-cm |
| Dielectric Constant @10E6 Hz | D150 | - | - | - |
| Dissipation Factor @10E6 Hz | D150 | 0.001 | - | - |
| Flammability @3.1 mm unless noted | UL94 | HB | - | - |
| H2O | ASTM Test Method | Hydex 4101 PBT | Hydex 4101L (PTFE-Filled) | Units |
|---|---|---|---|---|
| Water Absorption, Immersion, 24 hours | D570(7) | 0.08 | 0.07 | % by weight |
| Water Absorption, Saturation | D570(7) | 0.50 | - | % by weight |