PEEK Sheet
PEEK sheet provides unmatched strength, heat resistance, and dimensional stability for high-performance applications where failure is not an option.
Atlas Fibre is a reliable supplier and fabricator of PEEK sheet, a high performance engineering plastic and engineering plastic known for its superior strength. PEEK sheet is trusted in industries that demand uncompromising performance, including aerospace, medical, and semiconductor applications.
We offer both stock material and precision-machined components, with PEEK sheet suitable for components exposed to harsh environments and demanding engineering and industrial needs.
Why Choose This PEEK Material
PEEK is one of the highest-performing engineering plastics available, designed for extreme environments where conventional materials break down. Its durability ensures no permanent loss of properties even in harsh conditions.
Superior thermal and outstanding chemical resistance for harsh operating conditions
Exceptional toughness and ability to withstand mechanical stress and impact
Can withstand exposure to hot water and steam without permanent loss of physical properties
Excellent for precision machining and tight-tolerance components
Long-term dimensional stability under load and heat
Available in stock sizes or custom fabrication through Ready Plastics
PEEK (Polyetheretherketone) Overview
PEEK (Polyetheretherketone) is a high-performance semi-crystalline thermoplastic known for its exceptional mechanical strength, chemical resistance, and thermal stability. Unlike thermoset composites—which cure permanently and cannot be reshaped—PEEK can be reheated and machined, making it highly versatile for fabrication. It is available in several commercial grades, including natural (unfilled), glass-filled for increased stiffness, and carbon-filled for improved wear resistance and strength. Unfilled PEEK grades offer the highest elongation, making them ideal for applications that require high ductility and resilience.
PEEK is often compared to other thermoplastics like PPS (PolyPhenylene Sulfide) for its superior chemical and water resistance.
Typical Properties
PEEK is widely used in engineering applications due to its consistent performance under stress:
High strength and stiffness for structural components
Excellent wear and abrasion resistance for moving parts
Low moisture absorption for superior dimensional stability
Low thermal expansion for high dimensional stability in high-temperature environments
Continuous-use temperatures up to ~480°F (250°C)
V-0 flammability rating with very low smoke and toxic gas emissions when exposed to flame, making it ideal for safety-critical applications
Physical Properties
Tensile Strength: ~14,000 – 16,000 psi (natural grade)
Flexural Strength: ~20,000 – 24,000 psi
Hardness: Rockwell M99 – M100
Density / Specific Gravity: ~1.30 g/cm³
Coefficient of Thermal Expansion: ~2.6–3.5 × 10⁻⁵ in/in/°F
These properties support precision fit and performance across varying temperatures.
Electrical Properties
Dielectric Constant: ~3.2 – 3.6
Volume Resistivity: ~10¹⁶ ohm-cm
PEEK is an excellent electrical insulator, even in high-temperature and high-voltage environments.
High Temperature Performance
Continuous Operating Temperature: ~480°F (250°C)
Short-Term Exposure: Up to ~570°F (300°C)
Outstanding creep resistance under sustained loads at elevated temperatures
PEEK maintains mechanical integrity and very low moisture absorption at high temperatures, making it ideal for critical high-temp, high-strength applications. It can withstand exposure to hot water and steam without permanent loss of physical properties.
Forms, Grades, and Supply (Including Extruded PEEK)
Ready Plastics offers a full range of PEEK material options:
Forms: Sheet, rod, tube, extruded PEEK, and machined components such as rings
Grades:
Natural (unfilled)
Glass-filled (higher stiffness)
Carbon-filled (enhanced wear and strength)
Stock Availability: Multiple thicknesses and sizes ready to ship
Custom Options: Cut-to-size and machined parts, including rings, available
FDA-Compliant Grades: Available for food contact applications and medical uses
Product Range
Atlas Fibre’s PEEK product range is engineered to meet the rigorous demands of industries such as aerospace, automotive, medical, and advanced manufacturing. Available in a variety of forms—including sheets, rods, tubes, and precision-machined components—PEEK offers outstanding dimensional stability and superior chemical resistance, making it ideal for use in harsh chemical environments. The selection includes multiple PEEK grades, such as unfilled PEEK for applications requiring high temperature resistance and excellent mechanical strength, and extruded PEEK for projects that demand high dimensional stability and resistance to aggressive chemicals. Whether you need robust sheets for structural applications or custom-fabricated parts for specialized equipment, the versatility and performance of PEEK material ensure suitability across a wide range of industries and challenging environments.
Fabrication & Machining Notes
PEEK is well-suited for precision machining:
Compatible with CNC milling, turning, and drilling
Best machined with sharp carbide tooling
Annealing recommended for tight-tolerance or large parts
Machines similarly to aluminum, with added thermal stability benefits
Supports polishing, bonding, and finishing processes
Applications and Industries
PEEK sheet is used across high-performance industries:
Aerospace: Structural components, brackets, insulators
Medical: Sterilizable instruments, implants (FDA grades)
Semiconductor: Wafer handling, cleanroom components (low outgassing for gas-sensitive environments)
Automotive / EV: Under-hood parts, electrical insulation, wear components
Oil and Gas: Seals, valve seats, and wear rings exposed to high pressures, aggressive chemicals, and gas
DIY Uses
PEEK plastic is a top choice for DIY enthusiasts and professionals seeking high performance and durability in their custom projects. Thanks to its excellent chemical resistance, high temperature resistance, and low friction properties, PEEK material can be easily machined using CNC machining or a standard saw blade to create precision components such as valve seats, seals, and wear-resistant parts. Its natural color and light brown appearance also make it suitable for projects where aesthetics matter. Whether you’re building custom automotive parts, aerospace components, or medical devices, PEEK’s wear resistance and ability to maintain performance under demanding conditions make it an ideal material for DIY applications that require both functionality and a professional finish.
Certifications and Compliance (FDA Compliant)
FDA-compliant grades available for regulated applications
Meets RoHS requirements
Available with UL-94 flame ratings (grade-dependent)
USP Class VI grades available for medical use
Pricing and Availability
The cost of PEEK products is influenced by several factors, including the form (sheets, rods, tubes), dimensions, and specific material properties required for your application. Standard PEEK sheets and rods are typically available in a range of sizes and can be a more economical choice compared to custom-machined components, which may involve additional fabrication costs. Availability can vary by supplier and region, and some suppliers may require non-refundable deposits or have minimum order quantities for certain products. To maximize the service life of your PEEK material, proper handling and storage are recommended, making it a cost-effective solution for demanding applications where longevity and reliability are essential.
Customer Support
When working with high-performance materials like PEEK, expert customer support is essential to ensure optimal results. Atlas Fibre provides comprehensive technical assistance, including advice on machining PEEK, selecting the most suitable PEEK grade for your application, and ensuring compliance with industry standards such as FDA and V-0 flame ratings. Customers have access to detailed datasheets, technical documents, and FAQs to help them understand the unique properties and performance characteristics of PEEK material. This level of support helps industries achieve the highest levels of performance and service life from their PEEK components, ensuring that every project meets stringent quality and regulatory requirements.
Typical Properties Table
Property | Value Range | Notes |
|---|---|---|
Tensile Strength | 14,000 – 16,000 psi | Higher with filled grades |
Flexural Strength | 20,000 – 24,000 psi | Improved stiffness with glass-fill |
Glass Transition (Tg) | ~289°F (143°C) | Stable across wide temp range |
Dielectric Constant | 3.2 – 3.6 | Excellent insulation properties |
Volume Resistivity | ~10¹⁶ ohm-cm | High electrical resistance |