The semiconductor industry is the single largest consumer of high-performance engineering plastics per unit of output. From wafer fabrication to packaging and test, engineering plastics are essential components in virtually every piece of semiconductor manufacturing equipment. This guide examines the materials, applications, and trends driving this critical market.

PEEK and PEI (ULTEM) are two of the most respected high-performance engineering plastics. Both offer inherent flame retardancy and excellent mechanical properties, but they serve different application sweet spots. This comparison helps engineers determine which material is the right choice for their specific requirements.

PTFE (polytetrafluoroethylene), widely known by the DuPont brand name Teflon, is the most chemically inert and lowest-friction engineering plastic available. PTFE sheets are used in applications requiring ultimate chemical resistance, extreme temperature performance, or non-stick surfaces where no other material can survive.

PA66 (polyamide 66, commonly called nylon 66) is one of the most widely used engineering plastics globally. Known for its excellent toughness, high impact strength, and good temperature resistance, PA66 sheets are the go-to material for applications requiring durability at moderate temperatures and a competitive price point.

The global transition to renewable energy is driving unprecedented demand for engineering plastics in electric vehicle (EV) batteries, solar panels, and wind turbine components. Engineering plastics offer the electrical insulation, thermal management, chemical resistance, and mechanical strength that these clean energy technologies require.

PPS GF40 — polyphenylene sulfide reinforced with 40% glass fibre — is a high-performance engineering plastic that bridges the gap between standard engineering plastics and premium materials like PEEK. Offering excellent dimensional stability, chemical resistance, and structural performance at temperatures up to 200°C, PPS GF40 is a cost-effective solution for demanding applications.

PEI (polyetherimide), commonly known by the brand name ULTEM, is an amorphous high-performance engineering plastic that delivers a unique combination of strength, flame retardancy, and thermal stability. PEI sheets are widely used in aerospace, medical, and industrial applications where fire safety and structural performance are both required.

The aerospace industry demands materials that combine extreme performance with rigorous safety compliance. Engineering plastics — particularly PEEK, PEI (ULTEM), and PPS — have become indispensable in modern aircraft, enabling weight reductions of 40–70% compared to traditional metal components while meeting stringent fire, smoke, and toxicity (FST) requirements.

POM (polyacetal) and PA66 (nylon 66) are two of the most widely used engineering plastics. Both are cost-effective, strong, and versatile — but they differ significantly in key properties that determine which is right for your application. This head-to-head comparison clarifies the decision.

Engineering plastics have transformed modern manufacturing, enabling lighter, more durable, and more cost-effective components across every industry. This comprehensive overview covers the major high-performance engineering plastic families — their properties, applications, and selection criteria — to help engineers and procurement professionals navigate the landscape.