PEEK GF30 vs PTFE (Teflon): 0% composition overlap. Significantly different materials serving different application areas.
PEEK GF30 vs PTFE (Teflon)
Side-by-side chemical composition and mechanical property comparison.
Overview
PEEK GF30
PEEK with 30% short glass fiber reinforcement. Dramatically increased stiffness (E-Mod 11 GPa vs 4.1 unfilled) and strength (UTS 160 vs 100 MPa) with reduced elongation and creep. Maintains PEEK's chemical resistance and high-temp capability (continuous 250°C). Trade names: Victrex 450GL30, TECAPEEK GF30 (Ensinger), KetaSpire GF30 (Solvay). Used for structural brackets, pump housings, valve seats, bearing cages, and semiconductor wafer handling where higher stiffness than unfilled PEEK is needed.
PTFE (Teflon)
Polytetrafluoroethylene — the most chemically resistant polymer. Lowest friction coefficient of any solid material (~0.05-0.10). Service range -240°C to +260°C continuous. Cannot be melt-processed — must be sintered from powder (like ceramics). Very low mechanical strength. Trade name Teflon (Chemours/DuPont). Used for seals, gaskets, bearings, non-stick coatings, chemical reactor linings, electrical insulation, and lab equipment.
| PEEK GF30 | PTFE (Teflon) | |
|---|---|---|
| Material Number | — | — |
| Category | Polymers | Polymers |
| Standard | ISO 527-1 | ISO 12086 |
Mechanical properties — Pro
| Property | PEEK GF30 | PTFE (Teflon) | Unit |
|---|---|---|---|
| Tensile Strength | 155–165 | 20–35 | MPa |
| Elongation | 2–3 | 200–400 | % |
| Elastic Modulus | 10500–11500 | 0.4–0.55 | MPa |
| Density | |||
| hdt_1.8mpa | |||
| Melting Point | |||
| Continuous Use Temp | |||
| friction_coefficient | |||
| Water Absorption (24h) | |||
| Tensile Strength | |||
| Tensile Modulus | |||
| Elongation at Break | |||
| Density | |||
| Melting Point | |||
| Continuous Use Temp | |||
| Coefficient of Friction | |||
| Dielectric Constant (1MHz) | |||
| Water Absorption (24h) |
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PEEK GF30 and PTFE (Teflon) have significantly different compositions (0% overlap). These materials are not interchangeable and serve different application areas.
Automated assessment based on composition analysis
Frequently Asked Questions
Is PEEK GF30 the same as PTFE (Teflon)?
PEEK GF30 and PTFE (Teflon) have a 0% composition overlap. They are generally not directly interchangeable.
Can I replace PEEK GF30 with PTFE (Teflon)?
Generally not recommended. The compositions differ significantly (0% overlap). These materials have different alloying concepts and are intended for different applications.
What is the difference between PEEK GF30 and PTFE (Teflon)?
The main differences are in the following elements: overall alloying content. PEEK GF30 is a Polymers grade, while PTFE (Teflon) is a Polymers grade.
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