PEEK vs ULTEM: What’s the Difference and Which Should You Choose?
PEEK and ULTEM are high-performance thermoplastics used when standard plastics cannot provide enough heat resistance, dimensional stability, mechanical performance, or electrical reliability. PEEK is a semi-crystalline polyetheretherketone known for higher-temperature capability, broad chemical resistance, wear performance, fatigue strength, and demanding mechanical service. ULTEM is SABIC’s trade name for polyetherimide (PEI), an amorphous material valued for…