Precision Ultem and PEEK Solutions From COMCO It shares many of PEEK’s beneficial characteristics without the significantly higher price tag, as PEEK is among the most expensive of all available polymers. If budget is a concern when attempting to choose between Ultem vs. Compared to the dielectric strength of other thermoplastics, Ultem’s is among the highest. PEEK is superior to Ultem in its resistance to general wear and friction. While both PEEK and Ultem offer excellent resistance to chemicals, the only substances in which PEEK will dissolve are concentrated nitric and sulphuric acids. This makes PEEK an ideal choice for high-heat and high-load projects. Ultem can withstand continuous operating temperatures as high as 340º F, but PEEK resists deformation up to 500º F, with a melting point above 700º F. That said, CNC mills can effectively machine PEEK when it’s in its solid form. PEEK’s resistance to heat makes it both costly and challenging to process compared Ultem. Consider the following differences when comparing PEEK vs. While Ultem and PEEK offer similar benefits, their differences will help you decide which is suitable for your application. Primary Differences Between Ultem and PEEK Long-term resistance to high temperatures.Resistance to fatigue, stress cracking, chemicals, and hydrolysis.Ultem and PEEK plastics lend similar benefits to an application, sharing the following characteristics: This engineering plastic comes in various grades to deliver enhanced performance based on application-specific requirements, such as carbon fiber-reinforced PEEK for increased stiffness and high strength to bear exceedingly heavy loads and bearing-grade PEEK with a low coefficient of friction and wear rate for high-wear tasks. Offering high performance and an array of beneficial proprities, PEEK is found in components throughout diverse industries because of its virtually endless application capabilities. PEEK is also dimensionally stable, has good CNC machinability, and resists hydrolysis when in contact with moisture. It maintains its mechanical strength and stiffness over a broad spectrum of operating temperatures and provides excellent resistance to chemicals. Polyetheretherketone (PEEK) is a popular plastic polymer with an exceptionally stable chemical structure. Ultem in the 2000 series contains a glass fiber to reinforce the material and provide tensile strength, dimensional stability, and stiffness with a good strength-to-weight ratio. For example, Ultem 2300 is a popular grade for machining structural parts, reusable healthcare equipment, and electrical insulators. There are a variety of grades available, including FDA-compliant options, with enhanced characteristics to suit your needs. This material’s advantages and versatility give engineers ideal design flexibility with Ultem. Compared to other thermoplastics, Ultem’s dielectric strength is among the highest. Ultem withstands exposure to steam and hot water as well, allowing users to clean equipment made from Ultem with an autoclave. This optimally processable material offers beneficial mechanical properties like high strength, elasticity, and heat and chemical resistance. Ultem® is a semi-transparent thermoplastic resin in the polyetherimide (PEI) family. Understanding these materials’ benefits and weaknesses will help you determine the ideal material for your needs. Two of our extensive material options, Ultem® and PEEK, lend their high strength and resistance capabilities to widespread component applications. Today, nearly seven decades later, we deliver reliable, precision-machined components to clients in diverse industries worldwide by utilizing high-quality plastics. has been committed to innovation since 1956, pioneering the early use of thermosets and thermoplastics like nylon, phenolics, and Plexiglas™ in fabrication processes.
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