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PPS (40% Glass-Filled)

PPS with 40% glass fill is a high-temperature, chemically inert thermoplastic rated to 220C continuous. The glass loading pushes tensile to 180 MPa and stiffness well above unfilled grades, but drops elongation to 1.5% — this is a rigid, brittle, dimensionally stable material built for hot, aggressive fluid environments rather than impact loading.

How PPS (40% Glass-Filled) machines

Rated 2.5/5, and the limiting factor is the glass fill, which is highly abrasive and dulls standard HSS quickly. Use sharp carbide or PCD tooling, moderate feeds, and accept shorter tool life. The material itself is rigid and machines cleanly, but expect tool wear costs to dominate on production runs.

Manufacturing & processing

Available for injection molding, CNC, and extrusion. Molding suits high-volume pump and electrical parts where the abrasive glass would otherwise punish machining tools. CNC from stock plate or rod handles low-volume or prototype geometries; the low 0.3 W/mK thermal conductivity means heat stays at the cutting zone.

Typical applications

Best for chemical pumps and hot-fluid components where corrosion resistance (5/5) and 220C service meet. Common in pump housings, impellers, valve internals, and electrical connectors needing dimensional stability under heat. The stiffness suits structural parts; the 1.5% elongation rules out anything subject to shock or flexing.

When to choose it

Choose PPS-GF over PEEK when you need 200C-plus chemical service at roughly two-thirds the material cost and can accept brittleness. Choose it over unfilled engineering plastics when stiffness and dimensional stability under heat matter. Avoid it where impact or repeated flexing occurs — the glass fill makes it crack-prone.

Suitable surface finishes

Common finishes for PPS (40% Glass-Filled): bead blasting, powder coating. Use the finish selector →

FAQ

Why does PPS-GF wear out cutting tools so fast?
The 40% glass fiber is abrasive, acting like fine grit against tool edges. HSS dulls within minutes, so carbide or PCD is standard. Tool life and replacement cost, not cycle time, usually drive the machining budget on glass-filled PPS parts.
Can PPS-GF handle continuous use at 220C?
Yes — its rated max service temperature is 220C continuous, among the highest of common engineering plastics short of PEEK and Ultem. It holds dimensional stability and chemical resistance at that temperature, which is why it is favored for hot chemical pump and fluid-handling parts.
Is PPS-GF chemically resistant?
It scores 5/5 for corrosion resistance, withstanding most acids, bases, and solvents up to high temperature with virtually no attack below about 200C. That broad chemical inertness combined with heat resistance is its core advantage for chemical processing and pump components.

Property values are typical/nominal for early guidance and vary by temper, grade, supplier and heat treatment. Confirm critical specs against a certified datasheet or with an mfgiq engineer.