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PEI vs PEEK: Which High‑Temperature Plastic Should You Choose?
1. Introduction PEI vs PEEK When engineers need a polymer that can withstand sustained heat, resist chemicals, and maintain mechanical integrity, two materials often top the list: PEI (polyetherimide) and PEEK (polyetheretherketone). Both are high‑performance engineering thermoplastics used in aerospace, medical, oil & gas, electronics, and automotive industries. But they are not interchangeable. PEI, best known under the […]
