What You Need to Know About PPS

Key Takeaways

• High Heat Resistance: PPS is a high-performance thermoplastic that maintains stability at continuous operating temperatures of up to 220°C (428°F).

• Minimal Water Absorption: PPS features an incredibly low absorption rate of just 0.02% to 0.04% after a 24-hour water immersion test at 23°C.

• Cost-Efficiency: PPS offers significant savings, typically costing less than half the price of PEEK for the same volume of material.

Features of PPS

PPS (Polyphenylene Sulfide) is a high-performance engineering plastic known for its exceptional heat resistance and mechanical strength. While its performance in dimensional stability, chemical resistance, and wear resistance is second only to PEEK, it is a much more budget-friendly alternative—generally costing between 25% and 50% of the price of PEEK for the same dimensions.

It has extremely low moisture absorption (0.02% after 24 hours at 23°C), is inherently flame-retardant, and produces very little gas during combustion. Additionally, its high weatherability makes it resistant to degradation even when used in outdoor environments.

• High-performance resin (Performance comparable to PEEK)

• Superior mechanical strength

• Excellent heat resistance

• Strong electrical insulation

• Outstanding chemical resistance

• Inherently flame-retardant

• Excellent weather resistance

PPS Grades

Beyond the standard grade, PPS is available in various specialized formulations to enhance specific performance characteristics:

• Standard Grade

• Wear-Resistant Grade

• Glass Fiber Reinforced Grade

• Carbon Fiber Reinforced (Conductive) Grade

Considerations for Material Selection

While PPS is exceptionally hard, it is also brittle, making it prone to cracking or chipping during the machining process. It also tends to develop burrs easily. For parts requiring small holes, deburring internal sections can be labor-intensive, and some residual burrs may remain.

• Brittleness: Prone to cracking and chipping.

• Burr Formation: Frequent burrs during the cutting process.

Step Up Your Project with Yumoto Electric

Yumoto Electric manufactures custom PPS 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.