Ultem 2300 PEI (30% Glass Fiber): High-Strength Flame-Retardant Amorphous Polymer
Published: 2026-06-04
Ultem 2300 (30% glass fiber reinforced PEI) is the strength-optimized grade of Ultem, offering 140 MPa tensile strength with the inherent UL94 V-0 flame retardancy and exceptional dielectric properties characteristic of polyetherimide. It is the...
Ultem 2300 (30% glass fiber reinforced PEI) is the strength-optimized grade of Ultem, offering 140 MPa tensile strength with the inherent UL94 V-0 flame retardancy and exceptional dielectric properties characteristic of polyetherimide. It is the standard material for high-strength electrical connectors, aerospace interior structural components (low smoke/toxicity per FAR 25.853), and semiconductor wafer handling equipment requiring static dissipation.
Technical Properties
| Density | 1.51 g/cm³ |
|---|---|
| Tensile Strength | 140 MPa |
| Melting Point | N/A (Amorphous, Tg 217°C) |
| Shrinkage Rate | 0.2-0.4% |
| Flexural Modulus | 9 GPa |
| Hdt | 210 °C at 1.82 MPa |
| Continuous Service Temp | 170 °C |
Engineering Tool: Shrinkage & Cost Estimator
Calculate part weight, mold cavity dimensions accounting for shrinkage, and material cost — all locally in your browser.
Equivalents & Cross-References
| Equivalent / Alternate | Action |
|---|---|
| Sabic Ultem 2300 | |
| RTP 2183 |
Frequently Asked Questions
When should I choose Ultem 2300 over PEEK GF30?
Ultem 2300 is ~30-40% cheaper than PEEK GF30 and offers comparable strength (140 vs 160 MPa) with the advantage of inherent V-0 flame retardancy without additives. PEEK GF30 wins on: continuous service temperature (260°C vs 170°C), chemical resistance (far superior), and fatigue resistance. For applications below 170°C requiring flame retardancy and dielectric performance, Ultem 2300 is the commercial winner.
Related Diagnostics & Materials
PEEK Polyetheretherketone: High-Performance Polymer...
Polyetheretherketone (PEEK) is a colorless organic thermoplastic polymer in the polyaryletherketone (PAEK) family,...
Ultem PEI (Polyetherimide): High-Temperature Amorphous...
Polyetherimide (PEI), best known by Sabic's trade name Ultem, is an amorphous high-performance thermoplastic...
PTFE Teflon: Ultimate Chemical Resistance & Low-Friction...
Polytetrafluoroethylene (PTFE), widely known by the trade name Teflon, is a fluoropolymer with the lowest...
PPS Ryton: Polyphenylene Sulfide High-Temp...
Polyphenylene sulfide (PPS), best known by Solvay's trade name Ryton, is a semicrystalline high-performance...
LCP Vectra: Liquid Crystal Polymer for Micro-Molding &...
Liquid Crystal Polymer (LCP), best known by Celanese's trade name Vectra, is a unique class of thermotropic...
Vespel Polyimide: Extreme-Temperature Polymer for...
Polyimide (PI), commercially known as DuPont Vespel, is the highest-temperature-rated polymer commercially...
PAI Torlon: Polyamide-Imide Extreme-Performance Polymer...
Polyamide-imide (PAI), commercially known as Solvay Torlon, occupies the performance space between PEEK and...
PES Veradel: Polyethersulfone Transparent High-Temp...
Polyethersulfone (PES), commercially known as Solvay Veradel or BASF Ultrason E, is an amorphous high-temperature...
References & Industry Standards
- ASTM International. Standard Specifications for Engineering Plastics & Thermoplastics. astm.org
- UL Prospector. Plastics & Elastomers Material Database. ulprospector.com
- MatWeb. Material Property Data for Engineering Thermoplastics. matweb.com
- ISO 1043. Plastics — Symbols and Abbreviated Terms. iso.org