For insulating and precision parts. Selling cut PBT sheets with a moisture absorption rate of 0.09% for dimensional stability.
PBT (Polybutylene Terephthalate) is a crystalline engineering plastic of the polyester type. It has a low water absorption rate of 0.09% and good electrical insulation properties, making it suitable for insulating parts and precision components that should not be affected by humidity. It is also characterized by its toughness, with a tensile elongation exceeding 200%. KIRIURI.COM offers PBT (natural) in sheet size (thickness 10 to 100 mm). We accommodate cutting to the required dimensions. You can also download the material property table and material explanation PDF.
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basic information
【Material】PBT (Polybutylene Terephthalate) 【Shape】Sheet, thickness 10-100mm 【Color】Natural 【Reference Properties】Values for unfilled grade PBT (Kureha Extron) Specific gravity 1.3 / Tensile strength 49MPa / Elongation at break over 200% / Flexural strength 93MPa / Water absorption rate (23℃, immersion 24h) 0.09% / Heat deflection temperature (1.82MPa) 68℃ / Melting point 225℃ / Volume resistivity 5×10^16Ω·cm / Combustion class equivalent to HB *The values are for reference only. Please check the manufacturer's latest data sheet for accurate values.
Price information
Prices by size are published on KIRIURI.COM (stock confirmation and orders are for registered corporate members with credit terms). Free shipping for orders over 50,000 yen (excluding tax).
Delivery Time
P3
※In-stock items will be shipped within 4 business days after the order is confirmed.
Applications/Examples of results
- Electrical and electronic components (connectors, insulating washers, terminal blocks, circuit board holders) - Precision mechanical parts (positioning components that must not change dimensions due to humidity) - Housings for automotive electrical components - Jigs (inspection jigs, holding parts that also provide insulation) - Light load gears and bushes [Selection] For parts subjected to impact or electrical insulation, PBT is suitable, while PET is appropriate for parts requiring rigidity and wear resistance. [Note] Due to the load deflection temperature (1.82 MPa) of 68°C and glass transition temperature of 60°C, it is not suitable for applications that bear loads at high temperatures. It is prone to softening from processing heat, so adequate cooling is necessary, and annealing after rough machining is effective for high-precision parts.
Detailed information
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PBT (Natural) Sheet With a water absorption rate of 0.09%, which is about one-twentieth of that of PA6, the dimensions and electrical properties hardly change even with variations in humidity. It has a volume resistivity of 5×10^16 Ω·cm, providing high insulation, suitable for connectors, terminal blocks, and fixtures that require insulation. Sheet thickness: 10 to 100 mm.
Line up（1）
| Model number | overview |
|---|---|
| PBT (Natural) Board | Thickness 10, Thickness 15, Thickness 20, Thickness 30, Thickness 40, Thickness 50, Thickness 60, Thickness 80, Thickness 100 (a total of 9 sizes). Cut-to-order available in required dimensions. |
catalog（2）
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Company information
We offer cut sales of resin, engineering plastics, and ceramic materials.
