GFRP / GFK (Glass Fiber Reinforced Epoxy) vs PEEK CF30: 0% composition overlap. Significantly different materials serving different application areas.
GFRP / GFK (Glass Fiber Reinforced Epoxy) vs PEEK CF30
Side-by-side chemical composition and mechanical property comparison.
Overview
GFRP / GFK (Glass Fiber Reinforced Epoxy)
Glass fiber reinforced epoxy composite — the cost-effective structural composite for industrial, marine and construction applications. E-glass fiber in epoxy matrix. Unidirectional: UTS ~1000 MPa, E ~40 GPa. Quasi-isotropic layup: UTS ~300 MPa, E ~18 GPa. Density 1.8–2.1 g/cm³. Electrically insulating (unlike CFRP). Used for boat hulls, wind turbine blades, chemical tanks/pipes, architectural panels, ladders, gratings, automotive body panels and electrical insulation structures.
PEEK CF30
PEEK with 30% short carbon fiber — the stiffest and strongest injection-moldable thermoplastic compound available. E-Mod ~24 GPa (vs 11 GPa GF30, 4.1 unfilled). UTS ~212 MPa. Electrically conductive (antistatic/EMI shielding). Outstanding wear/friction properties. Trade names: Victrex 450CA30, TECAPEEK CF30 (Ensinger), KetaSpire CF30 (Solvay). Used for semiconductor wafer handling, bearing cages, compressor components, and metal-replacement structural parts.
| GFRP / GFK (Glass Fiber Reinforced Epoxy) | PEEK CF30 | |
|---|---|---|
| Material Number | — | — |
| Category | Polymers | Polymers |
| Standard | ASTM D3039 | ISO 527-1 |
Mechanical properties
| Property | GFRP / GFK (Glass Fiber Reinforced Epoxy) | PEEK CF30 | Unit |
|---|---|---|---|
| Tensile Strength | 900–1100 | — | MPa |
| Tensile Modulus | 38–45 | — | GPa |
| Density | 1.8–2.1 | — | g/cm³ |
Compatibility Assessment
GFRP / GFK (Glass Fiber Reinforced Epoxy) and PEEK CF30 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 GFRP / GFK (Glass Fiber Reinforced Epoxy) the same as PEEK CF30?
GFRP / GFK (Glass Fiber Reinforced Epoxy) and PEEK CF30 have a 0% composition overlap. They are generally not directly interchangeable.
Can I replace GFRP / GFK (Glass Fiber Reinforced Epoxy) with PEEK CF30?
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 GFRP / GFK (Glass Fiber Reinforced Epoxy) and PEEK CF30?
The main differences are in the following elements: overall alloying content. GFRP / GFK (Glass Fiber Reinforced Epoxy) is a Polymers grade, while PEEK CF30 is a Polymers grade.
View full data for each material:
Data provided for reference only. Always verify against the applicable specification for critical applications.
All data is for reference only. Equivalents indicate similarity, not identity. Always verify against the applicable specification for safety-critical applications. materialref.com accepts no liability for decisions based on this data.