is manufactured from premium virgin polyetherimide (PEI) resin to provide exceptional heat resistance, dimensional stability, mechanical strength, and electrical insulation. Designed for demanding industrial environments, PEI sheet maintains reliable performance under continuous high-temperature conditions while offering excellent machinability for precision components.
Compared with conventional engineering plastics such as PSU and PPS, Ultem™ 1000 PEI sheet offers higher strength, stiffness and long-term thermal performance, making it suitable for semiconductor, aerospace, medical, electronics, automotive and industrial equipment applications.
JUTAI supplies PEI sheets in multiple thicknesses and standard sizes with custom cutting, CNC machining and worldwide delivery.
JTYPEI®NA Key Properties and Advantages
1. Physical Properties
PEI sheet offers excellent dimensional stability, low moisture absorption, and low thermal expansion, making it ideal for precision engineering and machined components.
Appearance: Transparent amber color, non-toxic and odorless
Excellent dimensional stability with low molding shrinkage
Unreinforced PEI: 0.5%–0.7%
Glass fiber reinforced: 0.1%–0.3%
Water absorption: 0.16%
Low coefficient of thermal expansion, similar to metals
2. Mechanical Properties
PEI provides outstanding strength, stiffness, and creep resistance while maintaining excellent mechanical performance at elevated temperatures.
Tensile strength: Up to 15,000 psi
Retains approximately 6,000 psi at 190°C
Flexural modulus (20% GF): Up to 1,700,000 psi
Elongation at break: 60–80%
Excellent creep and fatigue resistance
High impact strength with proper component design
3. Thermal Properties
PEI sheet maintains excellent mechanical and electrical performance under continuous high-temperature conditions, making it suitable for demanding industrial applications.
Continuous service temperature: 150–170°C
Heat Deflection Temperature (HDT): Up to 220°C
Glass transition temperature (Tg): 217°C
Short-term heat resistance: 180–200°C
Excellent thermal stability
4. Flame Retardancy
PEI is inherently flame retardant without additional additives, offering low smoke emission and excellent fire safety performance.
Oxygen Index: 47%
UL94 V-0
Low smoke and low toxicity
5. Chemical Resistance
PEI resists a wide range of industrial chemicals and hot water, making it suitable for harsh industrial and chemical processing environments.
Excellent resistance to hydrocarbons, alcohols, oils, halogenated solvents and inorganic acids
Excellent hydrolysis resistance
Retains 85% tensile strength after 104 hours in boiling water
Limited resistance to strong alkalis and certain solvents above 150°C
6. Electrical & Optical Properties
PEI offers excellent electrical insulation with low dielectric constant, low dielectric loss, and high dielectric strength. Its outstanding microwave transparency at GHz frequencies makes it an ideal material for electrical insulation, semiconductor equipment, RF devices, optical communication, and high-frequency electronic applications.
Low dielectric constant
Low dielectric loss
High dielectric strength
Excellent electrical insulation
Stable electrical performance across a wide temperature and frequency range
Excellent microwave transparency at GHz frequencies
Suitable for optical fiber connectors and electronic insulation components
7. Radiation Resistance
PEI provides excellent UV and gamma radiation resistance for demanding industrial and medical applications.
Excellent UV resistance
Excellent gamma radiation resistance
Retains 94% tensile strength after 400 megarad cobalt irradiation
8. Processing Performance
PEI offers excellent machinability and can be processed into precision components using various manufacturing methods.
Suitable for CNC machining, injection molding, extrusion, blow molding and 3D printing
Pre-drying is recommended before processing due to moisture absorption
Typical Applications
1. Automotive Industry
Used for high-temperature and structural components such as:
Engine parts, ignition components, temperature control housings
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ABOUT JUTAI
Our current product series including PEEK, PEI, PSU and PPS profiles of sheets, rods, tubes, with a large inventory of standard sizes available. And customization of shape & color & material filled can also supply.
