PEEK GF30 mechanical properties (source: Ensinger) PEEK 30% carbon fiber modified( PEEK CF30) We had successfully used the PEEK GF30 in the oil logging tools under 220℃ plus 180mpa and the material was functioning well. So if PEEK natural and PEEK GF30 are under the same high temperature and high-pressure working conditions, the deformation of PEEK GF30 would be lower. But for the PEEK GF30, because of the glass fiber, the recrystallization ratio would reduce. Under this circumstance, the recrystallization would happen and the mechanical strength of PEEK would be decreased. When the temperature is above 150℃, which is beyond the glass transition temperature of PEEK, the glassy state of the material would happen. What’s more, the deformation at high temperature and high pressure of PEEK GF30 is lower than PEEK natural due to the glass fiber. So the material is suited for the application that requests rigid friction rather than impact. The elongation at break of PEEK GF30 is 5%. Relevantly, the higher stiffness makes the plastic more brittle. The high modulus value means PEEK GF30 has higher stiffness and wear resistance compared to PEEK natural. The modulus value of PEEK GF30 is 6300mpa which is the highest among the PEEK family. Because of the glass fiber, the most difference between PEEK GF30 and PEEK natural is the modulus. PEEK GF30 is a plastic that uses short-chain glass fiber to fill in the PEEK natural. In the aerospace industry, plastic is always used for structural components due to its lightweight and good mechanical strength. ![]() ![]() The density of the material is only 1.31g/cm3. The lightweight of PEEK plastic should be mentioned as well. ![]() We had machined the material into radome and the performance was beyond expected. Meanwhile, this plastic also shows great wave permeability. We had successfully used the PEEK natural in the electronic connectors. It has a very stable dielectric constant and low dissipation factor which makes the material possible to use in telecom technology. PEEK mechanical strength change graph (source:Victrex)Īlso, besides all the mechanical and chemical excellent properties mentioned before, PEEK plastic shows great electronic performance as well. However, if the temperature is up to 200℃ and relevantly the pressure is higher, then the PEEK GF30 is recommended. We had used PEEK in the oil logging tools under the working condition of 170℃ plus 140mpa and the material was functioning well. So PEEK is an ideal material fit for the extreme environment. As mentioned before, the glass transition temperature of PEEK is 150℃ and the long-term service temperature is 260℃. For some industries which the working condition is both high temperature and high pressure, like the oil and gas industry, which requests the material keep insulation, great mechanical strength under the extreme environment. If you use the PEEK natural in the medical industry, the material also shows hydrolysis resistance to steam, which is an ideal plastic for the medical industry.Īnother excellent property of PEEK is the insulation which is a core index for the oil logging technology. Meanwhile, for the chemical resistance, PEEK natural has the greatest chemical resistance among the PEEK family, only 98% concentrated sulfuric acid could dissolve PEEK natural and the plastic also shows different levels of resistance to different chemicals. PEEK Virgin mechanical properties (source: Ensinger) So if you use PEEK natural under the frictional working condition, please beware of the material loss due to abrasion. Relatively low modulus means PEEK natural is ‘softer’ and does not wear resistance compared to other PEEK modified materials. Although the PEEK natural has high toughness, the modulus of elasticity of the material is only 4200mpa which is the lowest of the plastic family. We can see the elongation at break is 15% and impact strength (Charpy) is n.b. ![]() Besides the great properties mentioned before, PEEK natural shows the highest toughness of the PEEK family. PEEK natural or the virgin form of PEEK is the most widely used PEEK plastic. The most common PEEK plastics are PEEK natural, glass, or carbon fiber modified and the PEEK PVX. What should be mainly emphasized is that the long-term service temperature is up to 260℃(500℉). This type of plastic exhibits a series of great properties, such as excellent chemical resistance, great mechanical strength, good dimensional stability, and so on. Polyether-ether-ketone, which is known as PEEK, is a high-performance, semi-crystalline plastic.
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