ESD PEI Sheets & Plates(10⁵-10⁹ Ω/sq)
We supply high-performance ESD PEI (Electrostatic Dissipative Ultem™) Sheets & Plates benchmarking Semitron® ESd 410C standards. Featuring a precise surface resistivity of 10⁵-10⁹ Ω/sq, a 𝑇𝑔 of 217°C, ultra-low outgassing, and zero particle shedding, this stock shape is engineered for warpage-free CNC machining of semiconductor wafer handling tools, IC test sockets, and cleanroom fixtures. Share your required thickness and dimensions 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
ESD PEI Sheets & Plates provide the ultimate static dissipative stock shape for high-precision semiconductor, microelectronics, and hard drive manufacturing. By compounding premium PEI (Ultem™) resin with permanent ESD additives, this material provides stable, humidity-independent surface resistivity (10⁵-10⁹ Ω/sq) that prevents catastrophic electrostatic discharge damage to sensitive silicon wafers and microchips.
Delivering continuous thermal resistance up to 170°C (𝑇𝑔=217℃) and low thermal expansion, ESD PEI maintains exceptional dimensional stability during heavy CNC milling and turning. With virtually zero ionic contamination and zero outgassing under high vacuum (< 10⁻⁹ Torr), it outperforms lower-temperature ESD plastics (like ESD POM or ESD ABS) in cleanroom processing and burn-in IC test equipment.
Performance Comparison: ESD PEI vs. Virgin PEI vs. ESD POM
| Performance Metric | Standard Virgin PEI Sheet | ESD PEI Sheet (ESd 410C Eq.) | Standard ESD POM / ABS Sheet |
| Surface Resistivity | Insulator (10¹⁵ Ω/sq) | Static Dissipative (10⁵-10⁹ Ω/sq) | Static Dissipative (10⁶-10⁹ Ω/sq) |
| Continuous Heat Limit | 170°C (𝑇𝑔217℃) | 170°C (𝑇𝑔217℃) | Low (80°C – 100°C) |
| Cleanroom Outgassing | Ultra-Low | Ultra-Low (Space & Vacuum Certified) | Moderate / High |
| Dimensional Stability | High | High (Low Warpage CNC Machining) | Moderate (Prone to warpage) |
How this product is normally specified
This product is supplied as extruded ESD PEI boards and pre-cut plates for CNC machining:
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Dimensions: Thickness (5–100 mm), sheet size (610×1220 mm), or cut blanks
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Resistivity Target: 10⁵-10⁹ Ω/sq permanent static dissipative rating
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Stress Relief: Annealed stock shape for warpage-free CNC milling and turning
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Cleanroom Class: Low ionic contamination and non-particle-shedding expectations
Where this material can fit
Typical applications for static dissipative ESD PEI sheets include:
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Semiconductor Wafer Processing: Wafer combs, carriers, cassettes, vacuum wands, and processing fixtures
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IC Testing & Assembly: High-temperature IC test sockets, burn-in test fixtures, and chip handling trays
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Electronics & Cleanroom Automation: Anti-static ESD assembly jigs, conveyor wear plates, and cleanroom tools
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High-Temp Chemical & Vacuum Tools: Electrostatic dissipative fluidic housings and high-vacuum insulators
What to confirm before ordering
To recommend the right ESD PEI sheet specification, please confirm:
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Target sheet thickness (mm), width/length, and piece quantity
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Surface resistivity spec (10⁵-10⁹ Ω/sq) and operating temperature
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CNC machining requirements (milling/drilling tolerances)
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Required trial quantity and estimated 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.
Fabrication and processing preparation
Share the finished part drawing as well as the requested rod diameter and length. This makes it possible to discuss machining allowance, tolerance, cut length, quantity and whether a closer starting size could reduce waste.
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 | Raw material, stock shape, semi-finished blank or completed part |
|---|---|
| Dimensions | Nominal size, finished size and tolerances |
| 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 |
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.
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