Suitable for manufacturing high-temperature resistant parts, chemical-resistant parts, high-performance insulating parts, wear-resistant sliding parts, precision structural parts, medical device parts, semiconductor equipment parts, and high-end CNC engineering plastic functional parts.
Polyether Ether Ketone (PEEK) is a high-performance special engineering plastic material produced by CNC machining, featuring excellent high-temperature resistance, mechanical strength, dimensional stability, chemical resistance, wear resistance, and electrical insulation properties. Compared to conventional engineering plastics such as PPS, Nylon (PA), Acetal (POM), and Polycarbonate (PC), Polyether Ether Ketone (PEEK) performs better in terms of high temperature, corrosion resistance, wear resistance, strength, and long-term stability. It is commonly used in aerospace, medical devices, semiconductor equipment, chemical equipment, pump and valve parts, Precision insulating components and high-end industrial functional components.
By focusing on application scenarios, boundaries of advantages, and non-recommended scenarios, it helps sales, customer service, and quoting staff quickly determine whether the material meets current part requirements.
It has good high-temperature resistance, high mechanical strength, good dimensional stability, good chemical resistance, good wear resistance, good fatigue resistance, good electrical insulation, low water absorption, good hydrolysis resistance, suitable for long-term use, and suitable for replacing some light-load metal structural components.
High-temperature resistant brackets, precision insulating parts, semiconductor equipment parts, medical device parts, pump and valve parts, sealing rings, bushings, shaft sleeves, sliders, gears, guide parts, wear-resistant gaskets, chemical equipment parts, aerospace interior or functional parts, food equipment parts requiring certification, precision fixtures and jigs, high-performance plastic structural parts.
Low-cost ordinary structural parts, standard prototypes, high-gloss transparent parts, large-size low-budget parts, high-elasticity snap-fit parts, ultra-high impact parts, parts in long-term contact with strong acids and oxidizing media, extremely high thermal conductivity parts, high electrical conductivity parts, and structural parts requiring metal rigidity and extremely high load-bearing capacity.
The following parameters come from product information and material knowledge fields, used for design review, quotation communication, and preliminary judgment before material selection.
| Material positioning | Suitable for manufacturing high-temperature resistant parts, chemical-resistant parts, high-performance insulating parts, wear-resistant sliding parts, precision structural parts, medical device parts, semiconductor equipment parts, and high-end CNC engineering plastic functional parts. |
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| Precision performance | CNC Polyether Ether Ketone (PEEK) can achieve better machining accuracy, and dimensional stability is generally better than materials such as Nylon (PA), Polypropylene (PP), Polyethylene (PE), and many ordinary engineering plastics. Actual accuracy is affected by part dimensions, wall thickness, clamping method, tool condition, machining heat, internal stress in the material, and post-processing methods. For precision assembly surfaces, sealing surfaces, positioning holes, bushing holes, and threaded holes, tolerances and surface roughness should be controlled separately. |
| Dimensional tolerances | The standard dimensional tolerances for CNC machined Polyether Ether Ketone (PEEK) can be referenced ± 0.03mm to ±0.15mm, while ordinary plastic structural parts can be evaluated at ± 0.05mm to ±0.20mm. Large components, thin-walled parts, elongated parts, complex slotted parts, and high-precision fittings may require individual evaluation based on the structure. This value is a standard reference range and does not guarantee absolute tolerances for all structures. Precision assembly surfaces, sealing surfaces, and positioning holes should be separately marked with tolerance requirements. |
| Minimum Wall Thickness | For ordinary CNC machining Polyether Ether Ketone (PEEK) the wall thickness of the structure is recommended not less than 1.0mm. Small non-stressed local locations can be appropriately optimized according to the structure, but it is not recommended to make large areas that are too thin. Since Polyether Ether Ketone (PEEK) is often used in high-temperature, load-bearing, or precision scenarios, thin-walled, hole edges, thread positions, and sealing areas should be appropriately thickened to avoid machining deformation, cracking, or long-term stress deformation. |
| Recommended wall thickness | For ordinary structural parts, 1.5mm-3.0mm is recommended; for bushings, bushings, sliders, gears, pump and valve parts, insulating brackets, and high-temperature structural parts, 2.0mm or more is recommended; for positions requiring tapping, press-fitting, sealing, or long-term load-bearing, 2.5mm-4.0mm is recommended, and reliability is improved through fillets, ribs, and reasonable support structures. |
| Minimum aperture | CNC drilling can achieve smaller hole diameters, but Polyether Ether Ketone (PEEK) machining small and deep holes, attention must still be paid to chip removal, hole burrs, and machining heat. For general designs, the recommended aperture is no less than 1.0mm. Threaded holes, positioning holes, sealing holes, and assembly holes should ensure sufficient hole margin spacing. If necessary, drilling followed by reaming, boring, or secondary finishing methods can be used to improve hole quality. |
| Assembly clearance | For ordinary assembly, it is recommended to reserve 0.05mm-0.20mm on one side; for movable fitting, it is recommended to reserve 0.15mm-0.40mm on one side. If used in high-temperature environments, the assembly clearance should be appropriately adjusted in conjunction with thermal expansion and operating temperature. Sliding parts, bushings, shaft sleeves, pump valve parts, and seals should be individually designed for clearance based on load, temperature, medium, and friction conditions. |
| Detailed performance | CNC Polyether Ether Ketone (PEEK) is suitable for machining holes, grooves, steps, chamfers, fillets, threads, sealing surfaces, sliding surfaces, insulation isolation structures, and precise functional details. Polyether Ether Ketone (PEEK) details have better machining stability, but overly small sharp corners, thin edges, and deeply narrow grooves may still increase machining risks and costs. Logos and markings can be achieved through engraving or laser marking, but complex decorative textures are not recommended for sealed surfaces, high-wear surfaces, or high-stress areas. |
| Surface effect | The raw machined surface of CNC Polyether Ether Ketone (PEEK) is usually natural beige, light brown, gray-brown, or black engineering plastic, with slight knife marks visible on the surface, and the overall texture leans toward high-performance functional materials. After finishing, chamfering, and polishing, the surface becomes neater, but it is usually not used as a high-gloss finishing material. Polyether Ether Ketone (PEEK) is more suitable for internal functional parts, high-temperature resistant structural parts, insulating parts, and wear-resistant parts, rather than ordinary decorative exterior parts. |
Based on material characteristics and suitable product ranges, customer needs are broken down into easier application directions to determine.
High-temperature resistant brackets, precision insulating parts, semiconductor equipment parts, medical device parts, pump and valve parts, sealing rings, bushings, shaft sleeves, sliders, gears, guide parts, wear-resistant gaskets, chemical equipment parts, aerospace interior or functional parts, food equipment parts requiring certification, precision fixtures and jigs, high-performance plastic structural parts.
Suitable for manufacturing high-temperature resistant parts, chemical-resistant parts, high-performance insulating parts, wear-resistant sliding parts, precision structural parts, medical device parts, semiconductor equipment parts, and high-end CNC engineering plastic functional parts.
CNC Polyether Ether Ketone (PEEK) belongs to high-end specialty engineering plastics, with core features such as maintaining good strength, rigidity, and dimensional stability even at high temperatures, while also possessing excellent chemical resistance, wear resistance, and electrical insulation properties. It is more suitable for high-temperature, high-demand, and long-term service scenarios than materials like Acetal (POM), Nylon (PA), Polycarbonate (PC), and PPS, but its material and processing costs are relatively high, making it unsuitable for ordinary low-cost plastic parts.
Based on wall thickness, hole position, assembly clearance, dimensional tolerances, and material usage risks, determine in advance whether the part structure is suitable for Polyether Ether Ketone (PEEK).
Post-processing of Polyether Ether Ketone (PEEK) affects appearance, dimensions, hole position, assembly clearance, and usage validation results, and should be explained in advance during quotation, DFM review, and sample confirmation stages.
Post-processing should focus on appearance display, dimensional fitting, connection assembly, and testing verification. Parts involving assembly positions need to be reserved in advance for machining, coating, and trial assembly allowances.
For common issues such as threads, snaps, strength, temperature resistance, and weather resistance, identify in advance whether the material needs to be replaced or if another processing method should be used.
When customer demand exceeds Polyether Ether Ketone (PEEK) material boundaries, it is necessary to combine strength, temperature resistance, toughness, long-term stability, and mass production goals to promptly recommend alternative materials or processing technologies.
If lower costs and lower temperature resistance requirements are needed, PPS, Acetal (POM), Nylon (PA)66, Polycarbonate (PC), or ABS can be chosen; If higher chemical resistance and low friction are required, PTFE or PVDF can be chosen; If higher rigidity and load-bearing capacity are required, aluminum alloy, stainless steel, titanium alloy, or alloy steel can be chosen; If higher wear resistance and low friction are required, fillers such as Polyether Ether Ketone (PEEK), Acetal (POM), PTFE, or UHMW Polyethylene (PE) can be chosen; If only appearance verification is needed, ABS, Polycarbonate (PC), or photosensitive resins can be chosen.
If customers require parts to be reliably used in high temperatures, chemical media, long-term wear, electrical insulation, or precision assembly environments, CNC Polyether Ether Ketone (PEEK) is an excellent choice. If you only need general structural verification, design prototypes, or low-cost samples, it is not recommended to prioritize Polyether Ether Ketone (PEEK); ABS, Polycarbonate (PC), Acetal (POM), Nylon (PA), or PPS are generally more economical. If the part needs to withstand extremely high loads, metal rigidity, or high thermal conductivity, metal materials should be prioritized.
After uploading 3D/2D drawings and supplementing materials, quantities, tolerances, surface treatments, and delivery requirements, XPartsLab will provide next steps in 3D printing manufacturability, cost, and delivery pathways.
