The melting point of all PEEK grades is 343°C, with a glass transition temperature (Tg) of 143°C and a continuous service temperature of 260°C — these backbone-driven thermal constants remain essentially the same regardless of formulation.
What does change is performance. Each PEEK grade contains different functional fillers — commonly unfilled, glass fiber reinforced, carbon fiber reinforced, or PTFE-filled — producing significant differences in mechanical strength, heat distortion temperature (HDT), dimensional stability, electrical properties and wear resistance. See the comparison below.
PEEK Material grades
Unfilled (Virgin)— Maximum ductility, purity and chemical resistance Glass-filled (GF30)— ~3× stiffness, electrically insulating, cost-effective Carbon-filled (CF30) — Highest stiffness, lowest thermal expansion, superior wear Bearing grade — CF + graphite + PTFE, self-lubricating, highest PV limit
ESD Electrostatic dissipation grade—Designed specifically for anti-static protection
PEEK Pellets— Virgin and reinforced granules (unfilled, GF30, CF30, ESD) serve as the foundational feedstock for injection molding, extrusion, and 3D printing filament production. With melt point 343°C and continuous service 260°C, they carry the base crystallinity required for all downstream stock shapes.
PEEK sheetsare flat semi-finished stock shapes supplied in standard panel dimensions for CNC milling, waterjet cutting, and drilling into flat, planar components that demand high flexural rigidity and dimensional stability.
PEEK rods are solid cylindrical stock shapes, continuously extruded in diameters from Ø1 mm up to Ø250 mm with standard lengths of 1000 / 2000 / 3000 mm They are purpose-built for CNC turning and milling into rotational, symmetrical, or axially-oriented precision components.
PEEK 3D Printing Filaments — Ufilled &10% glass-fiber and 10% carbon-fiber reinforced filament grades extruded for FDM/FFF high-temperature additive manufacturing, delivering complex geometry with PEEK's inherent thermal and chemical resistance.
PEEK material performance
PEEK material has excellent comprehensive performance，it exhibits a unique combination of the following key performance characteristics:
Chemical corrosion resistance
insoluble in strong acids and strong bases (except concentrated sulfuric acid)
Low temperature resistance
PEEK material can maintain Good mechanical properties at -196 degrees
Radiation resistant
PEEK can still maintain properties when γ irradiation reaches 1100Mrad.
High strength
Metal-equivalent tensile and impact strength. Enables lightweight metal replacement.
Fatigue resistance
Exceptional endurance under cyclic/vibration loading. Suited for high-frequency dynamic components.
Creep resistance
Maintains dimensional integrity under prolonged static load at elevated heat. Critical for precision.
Wear-resistant
Excellent against abrasive/adhesive wear. Used in bearings, seals and bushings.
High temperature resistance
Withstands continuous service up to 260°C (Tg 143°C, melt 343°C). Ideal for extreme thermal environments.
In water at 120 ℃, PEEK can keep more than 90% strength after 1000 hours,
dimensional stability
PEEK has low molding shrinkage rate and coefficient of thermal expansion
Why choose PEEK Material from PRES?
We guarantee the basic performance of the standard grades, but we also have a variety of modified grades with filler ratios ranging from 10% to 40%. Our customization is highly advanced. We can custom the color, resistance value and size of the PEEK profile for you.
If this is your first time encountering PEEK materials, we have extensive experience and a variety of forms of PEEK materials. We can recommend the appropriate PEEK material grade and form based on your processing requirements, such as injection molding, extrusion, compression molding, spraying, 3D printing, and machining, to meet your diverse processing needs.
If you have been engaged in PEEK processing for many years and need to find a PEEK manufacturer with a faster delivery time, more stable performance or need to customize products to meet the needs of customers, PRES will try best to meet your requirements.
As a high-performance plastic supplier in China, PRES offers a range of high-performanceplastic products, including plastic pellets, plastic plates, plastic rods, plastic tubes, plastic powders, and high-performance 3D printing filaments. Meanwhile, we provide mold design & manufacturing & injection molding services.
CONTACT US
Phone: +86 18676969309
Wechat:18676969309 Email: rioplastic@foxmail.com WhatsApp: +86 18676969309 Add: No. 417, Chang Road, Changping Town, Dongguan City, Guangdong Province
