What You Need to Know About PPSU

Characteristics of PPSU

PPSU (polyphenylsulfone) is an amorphous super engineering plastic with a high glass transition temperature and strong performance at elevated temperatures.

It has extremely low moisture absorption and excellent dimensional stability. Its strong hydrolysis resistance allows it to withstand repeated steam sterilization cycles, making it a particularly common choice in medical applications. Its high light transmittance also makes it suitable for covers and sight windows.

• Excellent mechanical strength

• Excellent impact resistance

• Excellent chemical resistance

• Excellent heat resistance

• High light transmittance

• Electrical insulation

• Excellent hydrolysis resistance

• Excellent dimensional stability

• Very high resistance to high-energy radiation

Types of PPSU

In addition to the standard grade, PPSU is available in a medical grade designed for biocompatibility and repeated steam sterilization.

• Standard grade

• Medical grade

Material Selection Notes

PPSU is attacked by strong acids, halogenated hydrocarbons, aromatic solvents, ethers, and ketones. It is also sensitive to UV exposure and is not suitable for outdoor use. Always verify chemical compatibility before use.

• Poor resistance to strong acids

• Poor UV resistance

• Chemical compatibility should always be verified

Step Up Your Project with Yumoto Electric

Yumoto Electric manufactures custom PPSU machined parts starting from a single piece. We have experience with over 200 materials, including metals such as aluminum alloys, stainless steel, molybdenum, and titanium; and engineering plastics including PEEK, POM, and MC Nylon.

If you’re unsure about material selection or machining methods, we offer complimentary consultations to help optimize your design and production. For any questions, please feel free to contact us.