Introduction to PBT Ultradur B4520

Ultradur B4520 (PBT B 4520) is a medium-viscosity, injection-molding grade of polybutylene terephthalate (PBT) from BASF that combines laser-weldability with good processability, making it particularly suitable for efficient manufacturing scenarios requiring rapid cool molding. The material formulation is optimised to provide consistent performance in complex structural and cosmetic applications.

01 | Highlights of Ultradur B4520 properties

Medium viscosity design: moderate flow during processing, combining mould filling efficiency and dimensional control

Good laser weldability: robust welding, suitable for automated assembly and multi-component fusion

Rapid cooling performance: helps to shorten the moulding cycle time and improve the efficiency of mass production

Good surface effect: suitable for components with a requirement for aesthetics such as housings, panels, etc.

UL94 HB flame retardant rating: meets the requirements of general electrical and electronic non-structural components. Flame retardant: meets the basic needs of non-structural electrical and electronic components.

02 | Innovation in the application fields of PBT B 4520

Ultradur B4520 is not only used in traditional household appliances, but also shows its stability in the following areas:

Office equipment: transmission components, coil frames in printers and photocopiers

Structural components for electrical appliances: brackets and fixing parts for the interior of household appliances

Sewing machine components: requirements for thermal stability and dimensional accuracy of the material

Electronic enclosures: appearance-oriented components that also need to be welded Structural design

Internal modules for commercial equipment: e.g. POS terminal components or housing support frames.

03 | Processing Recommendations and Considerations

Recommended Processing Method: Injection Moulding

Mould Cooling System: Adequate cooling is required to take advantage of quick release

Laser Welding Recommendations: Select wavelength-matched welding equipment to ensure a uniform depth of penetration and a strong bond

De-moulding Tilt: Appropriate design of the de-moulding angle will help to maintain the surface integrity of the product.

04 | A Quick overview of the performance data of PBT B 4520

05 | Why choose the Ultradur B4520?

   ✔ Meeting the demands of fast production line tempos

   ✔ Suitable for both automated welding and precision moulding

   ✔ Ideal for small, precise, mass-produced components

06 | How do you know if it is suitable for your product?

  ・The product needs to be injection moulded.

  ・High productivity is required.

  ・Surface finish and structural stability are required.

  ・Stable fusion of laser welded components is required.

07 | How can I get samples and technical information?

If you would like to learn more about Ultradur B4520 (PBT B 4520), process recommendations or obtain samples, we can provide:

   ✔ Technical Data Sheets (TDS)

   ✔ Processing recommendations (MFI, moulding temperatures, etc.)

   ✔ Application Case Studies

   ✔ Free Sample Request Service

Please feel free to contact us for customised support via the contact form on the right side of the page. Customised support.

【Related Recommendations】