Polybutylene Terephthalate ( PBT ) / 30% Glass Fibre Reinforced - Properties and Applications - Supplier Data by Goodfellow
| Atomic Volume (average) | 0.006 | 0.007 | m3/kmol | 366.142 | 427.166 | in3/kmol |
| Density | 1.48 | 1.63 | Mg/m3 | 92.3934 | 101.758 | lb/ft3 |
| Energy Content | 130 | 150 | MJ/kg | 14084 | 16250.8 | kcal/lb |
| Bulk Modulus | 10.7 | 11.23 | GPa | 1.5519 | 1.62877 | 106 psi |
| Compressive Strength | 124 | 162 | MPa | 17.9847 | 23.4961 | ksi |
| Ductility | 0.02 | 0.04 | | 0.02 | 0.04 | NULL |
| Elastic Limit | 77.2 | 107.2 | MPa | 11.1969 | 15.548 | ksi |
| Endurance Limit | 33.3 | 36.7 | MPa | 4.82975 | 5.32288 | ksi |
| Fracture Toughness | 3.814 | 4.577 | MPa.m1/2 | 3.47092 | 4.16528 | ksi.in1/2 |
| Hardness | 232 | 322 | MPa | 33.6488 | 46.7022 | ksi |
| Loss Coefficient | 0.00798 | 0.00862 | | 0.00798 | 0.00862 | NULL |
| Modulus of Rupture | 152 | 200 | MPa | 22.0457 | 29.0075 | ksi |
| Poisson's Ratio | 0.349 | 0.3631 | | 0.349 | 0.3631 | NULL |
| Shear Modulus | 3.304 | 3.687 | GPa | 0.479205 | 0.534754 | 106 psi |
| Tensile Strength | 96.5 | 185 | MPa | 13.9961 | 26.832 | ksi |
| Young's Modulus | 8.96 | 12 | GPa | 1.29954 | 1.74045 | 106 psi |
| Glass Temperature | 295 | 316 | K | 71.33 | 109.13 | °F |
| Latent Heat of Fusion | | | kJ/kg | | | BTU/lb |
| Maximum Service Temperature | 393 | 474 | K | 247.73 | 393.53 | °F |
| Melting Point | 493 | 540 | K | 427.73 | 512.33 | °F |
| Minimum Service Temperature | 150 | 200 | K | -189.67 | -99.67 | °F |
| Specific Heat | 1307 | 1359 | J/kg.K | 1.01143 | 1.05167 | BTU/lb.F |
| Thermal Conductivity | 0.2 | 0.29 | W/m.K | 0.374407 | 0.54289 | BTU.ft/h.ft2.F |
| Thermal Expansion | 20 | 45 | 10-6/K | 36 | 81 | 10-6/°F |
| Breakdown Potential | 16.5 | 21.7 | MV/m | 419.1 | 551.18 | V/mil |
| Dielectric Constant | 3.7 | 4 | | 3.7 | 4 | NULL |
| Resistivity | 2e+020 | 3e+021 | 10-8ohm.m | 2e+020 | 3e+021 | 10-8 ohm.m |
Resistance Factors
1=Poor 5=Excellent |
| Flammability | 3 |
| Fresh Water | 5 |
| Organic Solvents | 3 |
| Oxidation at 500C | 1 |
| Sea Water | 5 |
| Strong Acid | 3 |
| Strong Alkalis | 3 |
| UV | 5 |
| Wear | 3 |
| Weak Acid | 5 |
| Weak Alkalis | 5
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