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Polypropylene

A light, semi-rigid plastic with strong chemical resistance and excellent fatigue life, standard for living hinges.

Example: machined Polypropylene

What is it?

A light, semi-rigid plastic with strong chemical resistance and excellent fatigue life, standard for living hinges.

Key behavior

Excellent fatigue resistance, making it the standard choice for living hinges, plus strong chemical resistance at low cost.

Why choose it

Any part with a living hinge or repeated-flex feature, or where chemical resistance at low cost is the priority.

Applications

Living hinges, chemical containers, battery cases, medical labware.

Machining notes

Soft material requiring sharp tooling — dull tools push and deform the stock rather than cutting cleanly.

Properties

Density0.90-0.91 g/cm3
Typical HardnessRockwell R80-R100
Typical Strength4,000-5,500 PSI yield
Lead TimeConfirmed per RFQ
FinishingConfirmed per RFQ
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