PBT
Polybutylene Terephthalate
PBT is a semi-crystalline engineering thermoplastic from the polyester family. It offers high strength, excellent electrical properties, good dimensional stability, and outstanding chemical resistance. PBT has fast crystallization rates, enabling shorter cycle times in injection molding, and is widely used in electrical/electronic and automotive applications.
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Applications
Properties
Mechanical Properties
| Property | Value |
|---|---|
| Tensile Strength | 55 - 60 MPa |
| Tensile Modulus | 2,500 - 2,700 MPa |
| Elongation at Break | 15 - 40% |
| Flexural Modulus | 2,500 MPa |
| Impact Strength (Izod, notched) | 5 - 8 J/m |
| Hardness (Rockwell) | R118 |
Thermal Properties
| Property | Value |
|---|---|
| Melting Point | 225 °C |
| HDT (0.45 MPa) | 155 °C |
| HDT (1.82 MPa) | 60 °C |
| Continuous Use Temp | 120 °C |
| Flammability (UL94) | HB (V-0 grades available) |
Processing Parameters
| Property | Value |
|---|---|
| Drying Temperature | 120 - 130 °C |
| Drying Time | 3 - 4 hrs |
| Melt Temperature | 240 - 270 °C |
| Mold Temperature | 40 - 80 °C |
| Injection Pressure | 60 - 120 MPa |
| Shrinkage Rate | 1.5 - 2.2% |
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PBT Technical Datasheet
Download the complete technical datasheet including mechanical, thermal, and processing properties.
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