What is TECASON™ S Polysulfone

When engineers and designers look for materials that can handle heat, mechanical stress, and electrical insulation, TECASON™ S Polysulfone (PSU) often comes up as a reliable choice. In our experience, buyers appreciate it for injection molding, especially when complex geometries, high-precision parts, or critical structural components are involved. It’s used widely in electronics, high-temperature piping, medical devices, and other demanding applications.

01 | Core Advantages

Heat resistance and dimensional stability

TECASON™ S Polysulfone keeps its shape even under medium- and high-temperature conditions. Its heat deflection temperature reaches up to 181°C (0.45 MPa), and the low linear expansion coefficient of 5.6E-4 cm/cm/°C helps reduce warpage. Many engineers note that this makes designing complex molds much less stressful.

Reliable mechanical properties

With a tensile strength of 70.3 MPa, flexural strength of 106 MPa, and elongation of 100%, it provides a nice balance of stiffness and toughness. The Izod notched impact strength of 69.4 J/m means it can handle complex stresses. You might notice that even thin-walled parts or high-load components perform consistently when molded with this material.

Electrical insulation

Its dielectric constant is 3.1, volume resistivity 5E16 Ω·cm, and dielectric strength 16.7 kV/mm. This makes TECASON™ S ideal for high-voltage electronic parts such as switches, relays, and connectors. In practice, the low dissipation factor (0.001) ensures long-term stable operation, which is something our clients often highlight.

Processability and molding efficiency

Granular form, friction coefficient of 0.37, and Rockwell hardness of R120 allow high-precision injection molding. Many designers tell us that this combination reduces defects and improves production efficiency.

Химическая стойкость

It stands up to a wide range of chemicals, making it suitable for lab equipment, medical devices, and chemical pipelines. In some cases, clients have reported years of trouble-free operation in harsh chemical environments.

02 | Industry Applications

Medical equipment – Syringes, filters, dialyzers, and lab devices that need repeated sterilization and high-temperature resistance.

Electronics and electrical – Ideal for insulating switches, connectors, and relay housings.

Aerospace and automotive – Pipes, valves, and structural components that must endure extreme temperatures and mechanical stress.

New energy applications – Electric vehicles, charging stations, and high-temperature electrical systems.

Sustainability – Recyclable and reusable, aligning with green manufacturing trends. Many engineers appreciate that it fits modern environmental standards.

03 | Practical Recommendations

Complex geometries – Works well for thin-walled or intricate parts. Proper mold design is key to reducing shrinkage and warpage.

Electronic insulation – Low dielectric constant and high resistivity make it reliable for high-voltage parts.

Medical and lab equipment – Excellent resistance to repeated sterilization.

High-temperature piping and valves – Chemically resistant, suitable for continuous high-temperature operation.

04 | TECASON™ S Polysulfone Data Sheet

05 | Industry Dynamics and Market Trends

  ・The global PSU market is projected to grow from US$677 million in 2024 to US$1.076 billion in 2033, primarily driven by demand from the medical device, electronics, and aerospace industries.

  ・With the rapid development of the new energy industry, PSU is increasingly used in electric vehicles and high-temperature electrical systems.

  ・The recyclability and durability of PSU make it a key material choice in green manufacturing and sustainable development.

06 | Recommended Similar Materials

07 | FAQs — Buyer Tips

Q1: Can it handle high temperatures?
Yes. It works in medium- and high-temperature environments for long periods and tolerates short-term peaks at even higher temperatures.

Q2: Can it be used for transparent parts?
Natural-color granules have some transparency, suitable for medical and lab devices.

Q3: Will injection molded parts warp?
With proper mold design and its inherent dimensional stability, warpage is minimal.

Q4: What about electrical insulation?
Its low dielectric constant, high volume resistivity, and high dielectric strength make it ideal for electronic and high-voltage applications.

Q5: Is it recyclable?
Yes. TECASON™ S is reusable and aligns with sustainable manufacturing trends.

08 | Procurement Advantages

Stable supply – Multiple sourcing channels ensure uninterrupted production.

Traceable materials – Each batch meets international standards, reducing procurement risks.

Cost optimization – Flexible packaging and logistics help control inventory and shipping costs.

Professional support – Guidance on material selection, processing, and application solutions accelerates project progress.

Customer-centric approach – Many clients tell us they value our hands-on advice, which helps avoid trial-and-error in production.

In short, choosing TECASON™ S Polysulfone (PSU) isn’t just about picking a high-performance material—it’s about reliability, predictability, and having a partner who understands how the material performs in real-world applications.

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