PEEK CNC Machining Services
Our machining services cover various processes, such as turning and milling, and we can customize any design of PEEK parts according to customer requirements, providing fully customized solutions that meet your business needs. Our CNC PEEK machining services have been widely used in various industries such as photovoltaics, aerospace, chemical engineering, military, and food, providing many customers with high-quality machining services and reliable PEEK parts.
PEEK: The Pyramid of High-Performance Engineering Materials
PEEK was first developed by ICI in 1977 and is currently produced and sold by VICTREX.
PEEK, or PolyEtherEtherKetone, has many excellent properties, such as high-temperature stability, corrosion resistance, mechanical strength, fatigue resistance, insulation, and wear resistance, making it a high-performance engineering plastic. PEEK is widely used in high-demand fields such as aerospace, medical, automotive, electronics, chemical, petroleum, and natural gas. Because of its outstanding properties and wide application, PEEK is considered the “pyramid of engineering plastics” in the plastic industry. Nowadays, PEEK raw materials are also being mass-produced in China.
Mechanical property | ||||||
| Project | Test standard | Nnit | Virgin PEEK | GF30-PEEK | CF30-PEEK | LF30-PEEK |
| Tensile strength(23℃) | ISO527 | MPa | 90 | 155 | 210 | 134 |
| Bending strength(23℃) | ISO 178 | MPa | 150 | 212 | 298 | 186 |
| Compressive strength(23℃) | ISO 604 | MPa | 118 | 215 | 240 | 150 |
| Lzod impact strength (no notch) | ISO 180/IU | kJ/m2 | 51 | 40 | 32 | |
Melting Point | ||||||
| Project | Test standard | Nnit | Virgin PEEK | GF30-PEEK | CF30-PEEK | LF30-PEEK |
| Melting point | ISO 11357 | ℃ | 343 | 343 | 343 | 343 |
| Heat deflection temperature | ISO 75-f | ℃ | 163 | 315 | 315 | 293 |
| Continuous use temperature | UL 74685 | ℃ | 260 | 260 | 260 | 260 |
| Coefficient of thermal expansion | ASTM D696 | 10 -5℃ | 4.7 | 2.2 | 1.5 | 2.2 |
| Flammability rating | UL 94 | V-0@mm | 1.5 | 1.5 | 1.5 | 0.75 |
Electrical Properties | ||||||
| Project | Test standard | Nnit | Virgin PEEK | GF30-PEEK | CF30-PEEK | LF30-PEEK |
| Dielectric strength | IEC60243-1 | kV/mm | 18 | 19 | ||
| Dielectric constant | IEC60250 | — | 3.2 | 3.3 | ||
| Surface resistivity | IEC90093 | Ω | 10-15 | 10-15 | 5-10 | 6-10 |
Other Properties | ||||||
| Project | Test standard | Nnit | Virgin PEEK | GF30-PEEK | CF30-PEEK | LF30-PEEK |
| Density | ISO 1183 | g/cm3 | 1.3±0.02 | 1.5±0.02 | 1.4±0.02 | 1.43±0.02 |
| Rockwell hardness | ISO 2039 | HRR | 118 | 119 | 121 | 108 |
| Coefficient of friction | ASTM D3702 | － | 0.30-0.38 | 0.38-0.46 | 0.28 | 0.18 |
| Water absorption (25℃, 24 hours) | ISO 62 | % | 0.15 | 0.11 | 0.06 | 0.06 |
| Molding shrinkage (25-24℃) | Thickness of 3mm， flow direction under conditions of 170℃ | % | 1.2 | 0.4 | 0.1 | 0.3 |
| Perpendicular to the flow direction （larger after saturated crystallization） | % | 1.5 | 0.8 | 0.5 | 0.5 | |
Introduction to PEEK Materials for CNC Machining
SINCO-CNC commonly uses four types of PEEK materials for CNC machining: Virgin PEEK, LF30-PEEK, GF30-PEEK, and CF30-PEEK.
Virgin PEEK is a material with a light brown color and no added modified fillers. It can be FDA food-grade certified and has high-temperature resistance to steam, ethanol, and Y-rays. It is commonly used in medical, food equipment, and electronic instrument applications.
LF30-PEEK is a light black-colored material that is formed by adding PTFE, graphite, and carbon fiber fillers. It has stronger wear resistance and is often used for bearing and transmission system components. Its superior friction properties, such as low friction coefficient, wear resistance, and high peak pressure limit, make it the best material for friction applications at this level.
GF30-PEEK is a material with a light brown color that is reinforced with 30% glass fiber. It has better rigidity, creep resistance, and dimensional stability than Virgin PEEK, making it ideal for manufacturing structural parts. It can withstand fixed loads for long periods at high temperatures.
CF30-PEEK is a light black-colored material that is reinforced with 30% carbon fiber. It has better mechanical properties, such as higher elastic modulus, mechanical strength, and creep resistance, and is more wear-resistant than GF30. Plastic with carbon fiber reinforcement has 3.5 times better thermal conductivity and can dissipate heat faster from the bearing surface than unreinforced Virgin PEEK plastic.
The outstanding features of PEEK
Can be used for a long time at temperatures up to 260°C.
Exhibits excellent chemical stability
Has high strength, high rigidity, and wear resistance, making it an excellent engineering plastic.
Displays high flame retardancy and is difficult to ignite or self-ignite, making it an ideal flame retardant material.
Preprocessing
Before machining PEEK material, it is necessary to anneal it to reduce internal stresses. Otherwise, the high-speed rotating tool during the machining process may cause warping and deformation of the PEEK material. We recommend annealing at the following temperature and time: slowly heat the material to 150°C, hold for 2-3 hours, then heat up to 200°C and hold for 4 hours, and finally let it cool naturally. This can reduce internal stresses and improve the machinability of the material.
Tool selection
For different PEEK materials, we need to use different tools. For pure PEEK material, we recommend using hard alloy tools for machining. For LF30-PEEK, GF30-PEEK, and CF30-PEEK materials with modifications, we recommend using PCD alloy tools for machining to ensure better machining results and longer tool life.
Use of cutting fluid
Cutting fluid can help cool and lubricate the tool and improve chip removal capacity during high-speed machining. When machining industrial parts, we can choose ordinary cutting fluid for machining. However, when machining medical-grade PEEK, we need to choose cutting fluids with good biocompatibility. If higher biocompatibility is required, we can use pure water or compressed air for cooling. This can ensure the biocompatibility and quality of PEEK products.
The Key Advantage of PEEK Material
PEEK material has many advantages. Firstly, it has excellent chemical resistance, so it can withstand the erosion of many strong acids, alkalis, and solvents. Secondly, its moisture absorption is very low, so it can maintain its physical properties even in high humidity environments. In addition, PEEK material also has wear resistance, so it can be used in high-friction environments. It also will not be affected by continuous exposure to hot water or steam, so it can be used in high-temperature environments. Moreover, certain grades of PEEK material have biocompatibility, which can be applied in medical and biological science fields. Finally, PEEK material also has resistance to biodegradation, so it can be used in applications that require long-term use.
Expansion Industries for PEEK CNC Machining
PEEK plastic material, with its characteristics of lightweight, high temperature resistance, corrosion resistance, and high strength, has been widely used in the field of unmanned aerial vehicles.
In the structural design of drones, PEEK can be used to manufacture core components such as connectors, transmission devices, and energy storage device casings, which can greatly improve the flight efficiency and stability of unmanned aerial vehicles. Compared with other metal materials, PEEK can reduce the weight by 2-3 times, while the material can withstand ultra-high temperatures up to 260°C, which enables it to have longer endurance in complex environments.
In automotive manufacturing, PEEK can be used to produce high-temperature and high-pressure components such as engine covers, exhaust systems, and turbochargers. In addition, PEEK can also be used to manufacture critical components such as hydraulic pumps, clutches, transmission gears, and brake systems because of its ability to withstand high temperatures, high pressures, and chemical corrosion.
PEEK also plays an important role in the medical field. PEEK materials have many excellent properties, such as outstanding biocompatibility, chemical resistance, and mechanical performance, making it widely used in medical devices and orthopedic implants.
PEEK materials are commonly used in various surgical instruments, dental instruments, and orthopedic devices. Its high strength and light weight, combined with excellent chemical stability and biocompatibility, make it favored in the medical industry.
Related Product
What is the temperature range of PEEK material?
The PEEK material has strong stability at high temperatures, and its usage temperature range can reach up to 260℃ and can even be used for a long time in high-temperature environments up to 300℃.
PEEK material has excellent chemical stability and can resist the erosion of various chemical solvents and corrosive substances, such as acids, alkalis, salts, and various organic substances.
PEEK material has excellent mechanical properties, including high strength, rigidity, and wear resistance. In addition, PEEK material also has good flame retardancy, radiation resistance, and low friction coefficient.
Yes, PEEK material can be CNC machined.
Relative to other plastic materials, the CNC machining difficulty of PEEK material is higher. Preprocessing is required before processing, and the choice of tools should be reasonable.
Polishing treatment can be performed.