Modified PEI Pellets & Stock Shapes (SABIC Ultem™ Alternative)
We supply high-performance Modified PEI (Polyetherimide) Pellets and Stock Shapes engineered as direct technical alternatives to SABIC Ultem™ standard grades. Our portfolio includes Glass Fiber (GF10–40%), Carbon Fiber (CF10–30%), Wear-Resistant (PEI/PTFE), Anti-Static (ESD 10⁵-10⁹ Ω), and 5G Low Dielectric (𝐷ₖ) formulations. All specifications, filler ratios, melt flow rates, and custom colors can be fully customized upon request. Share your project specs for a fast quote.
Product information
Published information supports preliminary product selection. Confirm the exact grade, dimensions, tolerances, documentation and application suitability with the quotation for your order.
Description
Modified PEI Pellets & Compounds offer a complete portfolio of high-temperature engineering plastics engineered to replace metals and outperform standard thermoplastics under extreme thermal, chemical, and electrical stress. Manufactured to benchmark SABIC Ultem™ modified grades, our compounds deliver UL RTI ratings of 170–180°C, glass transition temperatures (𝑇𝑔) of 217°C, inherent UL94 V-0 flame safety, and zero corrosion in aggressive chemical environments.
Whether you require low-warpage glass-filled PEI for transformer bobbins, ultra-wear PTFE-modified PEI for self-lubricating bushings, anti-static ESD PEI for semiconductor wafer handling tools, or 5G low dielectric (𝐷ₖ) formulations for base station antennas, our lineup meets exact automotive, electronic, and industrial specs. Custom specifications, unique filler blends, and color matching can be discussed and tailored in detail to meet your exact OEM project requirements.
Standard PEI Grade Selection & Benchmark Cross-Reference Table
| Modified PEI Category | Key Characteristics & Fillers | Grade Series | B2B Typical Applications | Benchmark Equivalent |
| Glass Fiber (PEI-GF) | GF10%, GF20%, GF30%, GF40% High Rigidity & Low CLTE | PEI-GF Series | Structural Brackets, IC Test Sockets, Bobbins | Ultem™ 2100 / 2200 / 2300 / 2400 |
| Carbon Fiber (PEI-CF) | CF10%, CF20%, CF30% Ultra-High Modulus & Lightweight | PEI-CF Series | Aerospace Brackets, Robotics Arms, High-Speed Gears | Ultem™ CF Grades |
| Wear-Resistant (PEI-PTFE) | PEI + PTFE Self-Lubricating, Low Friction Coefficient | PEI-FE Series | Oil-Free Bushings, Dynamic Seals, Valve Seats | Ultem™ Lubricated Grades / FE20 |
| Anti-Static (PEI-ESD) | Controlled Surface Resistivity (10⁵-10⁹ Ω/sq) | PEI-ESD Series | Semiconductor Wafer Combs, Chip Cassettes, Fixtures | Semitron® ESd 410C / TECAPEI ESd |
| 5G Low Dielectric | Low 𝐷ₖ (＜3.0) & Low 𝐷𝑓, RF / Microwave Clear | PEI-RF Series | 5G Antenna Base Station Vibrators, Radomes | High-Frequency PEI Grades |
💡 Custom Compounding Service Notice: In addition to our standard SABIC-equivalent grades listed above, customized specifications (filler content, melt flow rate, impact modifiers, and custom color matching) can be fully tailored and discussed in detail based on your OEM project requirements.
How this product is normally specified
This product is supplied as compound pellets for injection moulding or extruded stock shapes (rods and sheets) for CNC machining:
-
Base Grade & Reinforcement: GF, CF, PTFE, ESD, or custom blend percentage
-
Special Performance Needs: High CTI, 5G Low 𝐷ₖ, thermal conductivity, or ESD anti-static
-
Processing Route: High-flow injection moulding or extruded sheet/rod stock processing
-
Customization Requirements: Specific color matching, custom flow rate, or tailored mechanical targets
Where this material can fit
Typical applications for modified PEI compounds and stock shapes include:
-
Semiconductor & Cleanroom: ESD anti-static wafer combs, chip cassettes, semiconductor assembly jigs, and vacuum tools
-
Automotive & EV Systems: Under-hood sensor mounts, high-voltage connectors, water pump impellers, and actuator bushings
-
Electronics & 5G Telecom: Transformer bobbins, rectifiers, 5G antenna vibrators, and PCB insulating clamps
-
Medical & Consumer Engineering: Autoclavable surgical tool handles, pharmaceutical fluidic manifolds, vape drip tips, and food machinery seals
What to confirm before ordering
To recommend or customize the right PEI grade, please confirm:
-
Required compound category or target SABIC grade (e.g., Ultem 2300, ESd 410C, FE20 equivalent)
-
Key performance drivers (strength, low warpage, wear resistance, ESD resistivity, or low 𝐷ₖ)
-
Processing method (injection moulding or profile extrusion)
-
Required trial quantity and estimated annual commercial demand
Send us the information you have. We will review technical details before confirming the quotation.
Material overview
Understanding PEI (Polyetherimide)
Why engineers use it
- Good heat resistance and stiffness for structural and electrical parts.
- Stable dimensions and predictable processing in suitable equipment.
- Inherent flame, smoke and electrical performance for many technical applications.
- Available in natural amber and opaque or reinforced grades.
- Can be molded, machined or printed where the appropriate material form is available.
Limits to consider
- Some chemicals and stress-cracking agents require careful compatibility review.
- Moisture control before high-temperature processing is important.
- Continuous chemical or wear duty may favor PEEK or PPS.
- Reinforced grades change impact, surface and directional properties.
- Regulated uses require the correct documented grade, not a generic PEI designation.
Grades and product forms
Unfilled PEI emphasizes the base material’s thermal, electrical and dimensional balance. Glass-fiber grades improve stiffness and movement control but change toughness and surface finish. Medical, aerospace or food-contact projects must identify the exact documentation requirement before grade selection.
Performance points to review
| Evaluation area | Why it matters | Information to provide |
|---|---|---|
| Temperature behavior | Useful performance under elevated or changing temperature | Continuous and peak temperature, cycle length and time at load |
| Mechanical response | Strength and stiffness must match the real part geometry | Load direction, stress level, impact and fatigue expectations |
| Environmental resistance | Fluids, cleaning agents and atmosphere can change service life | Chemical name, concentration, temperature and exposure time |
| Dimensional control | Tight-tolerance parts depend on both material and processing | Finished dimensions, tolerances and assembly conditions |
| Electrical or insulation needs | Electrical requirements may influence grade and thickness | Voltage, dielectric, conductivity or insulation target |
These are engineering discussion points, not guaranteed property values. Final acceptance criteria should be agreed for the selected grade, process and order.
Typical application directions
These examples show where the material may be evaluated. They do not replace a suitability review for the finished component.
Preparing a pellet or granule project
State whether the resin will be injection molded, compression molded, extruded, compounded or used in process development. Include machine capability, part thickness, mold concept, drying and handling plan, color, filler or additive needs, and the property the finished part must retain. For an unfamiliar resin, a controlled trial lot is more useful than moving directly to production volume.
Where the application is critical, define what a successful trial looks like before material is ordered: dimensions after processing, visual condition, mechanical response, assembly fit or another measurable result.
When another material may be better
PEEK may provide a larger performance margin in more severe heat or chemical service, while lower-cost engineering plastics may be sufficient for moderate conditions. PEI is often chosen when its specific balance of thermal, electrical and structural properties fits the part.
We recommend sharing the current material and the reason it is being reconsidered. Cost, processability, supply form and inspection burden belong in the decision alongside technical performance.
Information needed for an accurate quotation
A useful RFQ reduces follow-up questions and helps us distinguish between a material request and a finished-part requirement.
| Product form | Pellets or granules; natural, black or another required color |
|---|---|
| Grade direction | Unfilled, reinforced, modified or application-specific requirement |
| Quantity | Trial quantity, first order and estimated annual demand |
| Application | Part function and current material, if any |
| Operating temperature | Continuous range, peak temperature and cycle duration |
| Environment | Chemicals, gases, moisture, pressure, vacuum or outdoor exposure |
| Mechanical duty | Load, speed, impact, wear and mating components |
| Documentation | Drawing revision, inspection, traceability or compliance needs |
| Conversion process | Molding, extrusion, compounding, sintering or development work |
| Packaging | Trial pack, production packaging and moisture-control expectations |
Frequently asked questions
Can I request a sample or trial quantity?
Trial quantities can be discussed according to product form and availability. Tell us what you need to prove during the trial, the intended process and the expected production quantity if the test succeeds.
Do you provide a data sheet or material documentation?
Available documentation depends on the selected material and supply route. List the documents required by engineering, purchasing or quality when you inquire so they can be checked before quotation.
Can the grade be selected from a product name alone?
No. Similar product names can cover different grades, colors, fillers and processes. Selection should be based on the finished application, environment and required property balance.
Can you supply custom dimensions or finished parts?
Custom sizes, blanks or finished parts can be reviewed where appropriate. A drawing with tolerances, quantity and material requirement is the best basis for quotation.
How should we evaluate an alternative to our current material?
Share the current grade, the part’s service conditions and the reason for changing it. A useful comparison looks at failure mode, processing, life, inspection and total project cost—not only a single property value.
What determines lead time?
Lead time depends on product form, grade, size, quantity, documentation, machining and current availability. Confirm the required delivery date and destination with the RFQ rather than assuming a standard schedule.
Send the drawing, application and quantity. We will use the project details to prepare a practical material and supply discussion.
Reviews
There are no reviews yet.