GFRP / GFK (Glass Fiber Reinforced Epoxy) vs PBT GF30: 0% composition overlap. Significantly different materials serving different application areas.
GFRP / GFK (Glass Fiber Reinforced Epoxy) vs PBT GF30
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.
PBT GF30
Polybutylene Terephthalate with 30% glass fiber — THE connector and electrical component material. Key advantage over PA6 GF30: near-zero moisture absorption (0.02-0.2%), so mechanical and electrical properties are stable regardless of humidity. Lower UTS than PA6 GF30 but consistent. Trade names include Ultradur B4300 G6 (BASF), Valox 420 (SABIC), Celanex (Celanese), Crastin (DuPont). Used for electrical connectors, relay housings, coil formers, automotive sensors, and any part requiring dimensional stability in humid environments.
| GFRP / GFK (Glass Fiber Reinforced Epoxy) | PBT GF30 | |
|---|---|---|
| Material Number | — | — |
| Category | Polymers | Polymers |
| Standard | ASTM D3039 | ISO 10350 |
Mechanical properties
| Property | GFRP / GFK (Glass Fiber Reinforced Epoxy) | PBT GF30 | Unit |
|---|---|---|---|
| Tensile Strength | 900–1100 | 130–150 | MPa |
| Tensile Modulus | 38–45 | 10000–12000 | GPa |
| Density | 1.8–2.1 | 1.52–1.55 | g/cm³ |
Compatibility Assessment
GFRP / GFK (Glass Fiber Reinforced Epoxy) and PBT GF30 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 PBT GF30?
GFRP / GFK (Glass Fiber Reinforced Epoxy) and PBT GF30 have a 0% composition overlap. They are generally not directly interchangeable.
Can I replace GFRP / GFK (Glass Fiber Reinforced Epoxy) with PBT GF30?
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 PBT GF30?
The main differences are in the following elements: overall alloying content. GFRP / GFK (Glass Fiber Reinforced Epoxy) is a Polymers grade, while PBT GF30 is a Polymers grade.
Related Comparisons
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Data provided for reference only. Always verify against the applicable specification for critical applications.
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