PBT Sheets PBT Sheets PBT Sheets
Polybutylene Terephthalate (PBT) Sheets
Our Polybutylene Terephthalate (PBT) sheets exhibit properties akin to PET, offering a balance of desirable features. While PBT may have slightly lower mechanical performance compared to PET, it excels in impact strength and wear resistance. This makes PBT, when reinforced with fibers, a highly versatile material, available to you in sheet form. PBT sheets can withstand temperatures of up to 200°C.
PBT sheets demonstrate impressive chemical resistance against solvents, automotive fuels, lubricants, brake fluids, and household cleaners. However, they are not fond of prolonged exposure to hot water or alkali, as this can lead to hydrolytic degradation. The degradation process is slow at room temperature but accelerates at elevated temperatures (between 80°C and 90°C).
With excellent hardness that can be further enhanced by the addition of glass, PBT sheets are remarkably rigid. They are well-suited for various machining processes, delivering superior surface quality. However, the choice of tools and processing parameters must be carefully considered.
We offer PBT sheets in a range of thicknesses, from 1mm to 8mm in stock, and sheets with a thickness of 8mm to 80mm are available upon request.
The dimensional stability of PBT surpasses that of polyamide, thanks to its low water absorption. This characteristic makes PBT an ideal choice for applications in the field of electrical engineering.
PBT sheets, in their versatile form, are commonly employed in the production of high-quality and precision technical components. They find applications in electrical engineering, electronics, the automotive industry, household appliance manufacturing, precision mechanics, and mechanical engineering. Choose PBT for your technical solutions that demand both quality and responsibility.
Mechanical Properties
| MECHANICAL PROPERTIES | VALUE | UNIT | PARAMETER | NORM |
|---|---|---|---|---|
| Impact strength (Charpy) | 37 | kJ/m2 | max. 7,5J | DIN EN ISO 179-1eU |
| Compression strength | 22/41/77 | MPa | 1% / 2% / 5% | EN ISO 604 |
| Modulus of elasticity (flexural test) |
3400 | MPa | 2mm/min, 10 N | DIN EN ISO 178 |
| Flexural strength | 98 | MPa | 2mm/min, 10 N | DIN EN ISO 178 |
| Elongation at break | 9 | % | 50mm/min | DIN EN ISO 527-2 |
| Tensile strength at yield | 62 | MPa | 50mm/min | DIN EN ISO 527-2 |
| Tensile strength | 62 | MPa | 50mm/min | DIN EN ISO 527-2 |
| Notched impact strength (Charpy) | 4 | kJ/m2 | max. 7,5J | DIN EN ISO 179-1eA |
| Elongation at yield | 7 | % | 50mm/min | DIN EN ISO 527-2 |
| Ball indentation hardness | 147 | MPa | ISO 2039-1 | |
| Compression modulus | 1600 | MPa | 5mm/min, 10 N | EN ISO 604 |
| Modulus of elasticity (tensile test) |
3500 | MPa | 1mm/min | DIN EN ISO 527-2 |
Thermal Properties
| THERMAL PROPERTIES | VALUE | UNIT | PARAMETER | NORM |
|---|---|---|---|---|
| Melting temperature | 224 | C | DIN EN ISO 11357 | |
| Service temperature | 110 | C | long term | NN |
| Thermal expansion (CLTE) | 8 | 10-5*1/K | 23-60°C, long. | DIN EN ISO 11359-1;2 |
| Service temperature | 200 | C | short term | NN |
| Thermal expansion (CLTE) | 10 | 10-5*1/K | 23-100°C, long. | DIN EN ISO 11359-1;2 |
| Glass transition temperature | 39 | C | DIN EN ISO 11357 |
Other Properties
| OTHER PROPERTIES | VALUE | UNIT | PARAMETER | NORM |
|---|---|---|---|---|
| Water absorption | 0.05 | % | 24h / 96h (23°C) | DIN EN ISO 62 |
| Flammability (UL94) | HB | – | corresponding to | DIN IEC 60695-11-10; |
| Resistance to hot water/ bases | – | – | – | |
| Resistance to weathering | – | – | NN |
