01. Stringent Material Requirements in Aerospace
Aircraft must operate reliably under extreme high and low temperatures. Components are also exposed to long-term vibration and fatigue, requiring materials with excellent mechanical stability and self-extinguishing flame retardancy to support flight safety.
Machinability is equally important. Aerospace components often feature complex geometries and stringent dimensional tolerances. Traditional materials can involve high processing costs and long production cycles, creating challenges for efficient large-scale manufacturing.
Lightweighting is another critical requirement. Reducing aircraft weight helps lower fuel consumption and carbon emissions while improving flight performance, making lightweight aerospace materials increasingly important to the sustainable development of the aviation industry.
02. Why PEEK Is a High-Performance Material for Aerospace Applications
01. Outstanding Performance Under Extreme Temperatures
PEEK maintains stable performance across a wide temperature range. It works reliably at -40°C, has a melting point of 343°C, and offers a long-term service temperature of up to 260°C.
These properties enable PEEK components to withstand both low temperatures at high altitudes and high-temperature environments around aero-engines.
02. Superior Fatigue and Creep Resistance
PEEK offers remarkable fatigue and creep resistance, supporting long-term component stability during aircraft operation.
The material retains superior mechanical properties under high cyclic fatigue loads, making it suitable for aerospace components exposed to repeated mechanical stress.
03. Reliable Flame Retardancy and Safety Performance
PEEK features excellent flame retardancy and self-extinguishing properties and can achieve a UL 94 V-0 rating.
It also produces minimal smoke and toxic gases during combustion, supporting demanding safety requirements for aircraft interiors and other aerospace applications.
04. Excellent Machinability
Aerospace components frequently require complex geometries and high dimensional precision.
PEEK can be processed through injection molding, extrusion, cutting, and other forming methods. This manufacturing flexibility facilitates the production of complex, high-precision components while helping reduce production costs and improve manufacturing efficiency.
05. Lightweight and Comprehensive Performance
With a density of only 1.3 g/cm³, PEEK provides outstanding specific strength while offering resistance to salt spray, corrosion, and hydrolysis.
These properties support aircraft lightweighting while contributing to energy conservation, emission reduction, and improved performance. As a result, PEEK is increasingly considered as an alternative to traditional metallic materials in selected aerospace applications.
03. Core PEEK Aerospace Applications
01. Key Structural Components
Radar Radomes
PEEK radar radomes combine high dimensional accuracy, excellent weather resistance, high strength, low weight, chemical inertness, and superior flame retardancy.
These properties help maintain stable performance under extreme temperature conditions while meeting the demanding environmental requirements of aerospace systems.
PEEK Fasteners
Bolts, brackets, and other fasteners manufactured from PEEK can provide weight reduction and improved fatigue resistance compared with conventional materials.
PEEK also resists aviation fuel, hydraulic fluid, de-icing solutions, pesticides, cleaning agents, fire-extinguishing chemicals, water, salt, and steam.
With a UL 94 V-0 flame rating, it generates low levels of smoke and toxic gas emissions, making it suitable for demanding aerospace fastening applications.
02. Safety and Protection Components
Aircraft Wheel Hub Covers
PEEK aircraft wheel hub covers are lightweight, high-strength, easy to transport, reliable, and environmentally friendly.
They can protect disassembled wheel hubs during aircraft maintenance and long-distance transportation, helping prevent damage to critical components.
Conduits and Electrical Insulation Components
PEEK offers excellent resistance to high and low temperatures, flame retardancy, radiation resistance, and strong mechanical properties, making it suitable for demanding aerospace electrical insulation applications.
PEEK conduits provide stable dimensions, excellent creep resistance, fatigue resistance, and moisture resistance. They also demonstrate outstanding resistance to ageing at elevated temperatures, with no obvious reduction in tensile strength.
These characteristics support reliable operation of aerospace electrical and electronic systems in harsh environments.
03. Special Functional Components
Precision Insulation and Support Components
PEEK's low moisture absorption, dimensional stability, electrical insulation, and high-temperature resistance make it suitable for precision insulating and support components used in aerospace systems.
Its dimensional stability helps components maintain reliable geometry and performance under changing temperature and humidity conditions.
Aero-Engine Components
Lightweight composite materials have become increasingly important in new aircraft development.
PEEK can be used to manufacture lightweight fastening systems, bolts, nuts, inserts, and brackets for aero-engines. Its excellent wear and creep resistance can help reduce maintenance requirements while supporting long-term component reliability.
04. Recommended ZYPEEK Materials for Aerospace Applications
01. Working Condition 1: Structural Mechanical Properties
Glass Fiber (GL) & Carbon Fiber (CA) Reinforced Series
These materials are designed for applications requiring high strength, high rigidity, creep resistance, and lightweight performance.
Density: 1.3 g/cm³
Glass Fiber Reinforced Granules – GL Series
Recommended Models: 770GL30, 550GL30
Performance Advantages:
Flexural strength: 265 MPa
Flexural modulus: 11.3 GPa
The reinforced material provides greatly improved dimensional stability and creep resistance.
Application Scenarios: Engine cowlings, cabin door hinges, and other components under long-term static loads.
Carbon Fiber Reinforced Granules – CA Series
Recommended Model: 550CA30 – 30% carbon fiber content
Performance Advantages:
Elastic modulus: 22 GPa
Tensile strength: 250 MPa
The material provides excellent wear resistance and higher thermal conductivity than pure resin.
Application Scenarios: Transmission bearings, gearbox gears, and other components exposed to high dynamic loads.
02. Working Condition 2: Insulating & Thin-Wall Components
Pure Resin Granules – G Series
Recommended Model: 770G
Electrical Properties:
Volume resistivity: 10¹⁴ Ω·m at 23°C
Dielectric constant: 3.1
Processing Characteristics:
Melt flow index: 10 g/10 min at 380°C
Heat deflection temperature: 152°C at 1.8 MPa
High fluidity ensures complete filling of thin-wall structures. The heat deflection temperature helps maintain dimensional stability under high-temperature working conditions.
Application Scenarios: Sensor insulating brackets, precision insulating structures, thin-wall electrical components, and other high-temperature insulation applications.
03. Working Condition 3: High-Purity Electrical Insulation Components
551LG High-Purity Granules
551LG is designed for applications requiring high material purity, radiation resistance, electrical insulation, and stable processing performance.
Technical Properties:
Gamma radiation resistance
Excellent peel resistance
Strong adhesion performance
Stable continuous extrusion performance
Recommended Model: 551LG
Core Advantages:
High heat resistance
Radiation resistance
Breakdown resistance
Precisely controlled melt fluidity
Volume resistivity: 10¹⁴ Ω·m
Its controlled melt fluidity supports consistent processing and dimensional stability in demanding high-temperature electrical insulation applications.
Application Scenarios: High-temperature insulation components, radiation-resistant electrical components, and specialized insulation applications in demanding aerospace environments.
04. Working Condition 4: Special-Shaped Component Manufacturing
Raw Materials for 3D Printing
For complex aerospace components, material purity, powder morphology, sphericity, and thermal stability are critical to manufacturing consistency.
Manufacturing Requirements:
High material purity
Superior powder morphology and sphericity
Excellent high-temperature resistance
Stable performance at the melting point of 343°C
Recommended Model: Fine Powder PF Series
Product Features: Balanced rigidity and toughness
Application Scenarios: Satellite fuel system parts, valve bodies, turbine special-shaped sealing rings, and high-load special-shaped bearings.
PEEK Supporting Lightweight and High-Performance Aerospace Systems
From structural and mechanical components to electrical insulation, precision parts, and complex 3D-printed geometries, PEEK combines lightweight performance with high-temperature resistance, mechanical strength, chemical resistance, dimensional stability, and manufacturing flexibility.
These characteristics allow ZYPEEK materials to address demanding requirements across aerospace manufacturing while supporting the industry's transition toward lighter, more efficient, and more durable aircraft systems.
ZYPEEK continues to focus on the development of high-performance PEEK materials and application-specific solutions for aerospace manufacturers, helping advance next-generation aircraft components and high-performance aerospace systems.
Note: The above application scope is for general reference. The actual application of ZYPEEK shall be subject to official announcements. All listed data are representative values and not guaranteed values.
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