PAI Rod Manufacturer in China

Polyamide-imide rods (hereinafter referred to as PAI rods) are made of the high-performance thermoplastic material known as polyamide-imide due to its chemical resistance, electrical insulation property, excellent mechanical property, and great dimensional stability. Our PAI rods are processed using various manufacturing techniques, including injection molding, extrusion, and machining. They are typically applied in some demanding applications, such as semiconductor industries, aerospace, automotive, and electronics. One of its notable features lies in that it can withstand the working temperature as high as around 260°C (500°F) continuously. This makes it suitable for some tough conditions. Here not only standard PAI rods are supplied, custom service for PAI rods is also available. If you are looking for ideal PAI rods, you might as well take our products into consideration.

Product Specification

Available diameter options10-300 mm


Density1.38 g/cm³
Temperature resistance-50°C-220 °C
Processing techniqueCutting, molding
Tensile strength100-150 MPa

Wide Applications of PAI Rod

PAI rods have seen applications in various industries where great performance is required. Here some typical applications are listed. Firstly, it is applied in aerospace applications where they can be used for bearings, seals, bushings and structural parts due to their high strength, stiffness and temperature resistance. Secondly, in the automotive industry, they can be manufactured into bearings, thrust washers, and seals in engine components, for they can withstand high temperatures. Thirdly, they can serve as insulating components in electrical and electronic devices due to their excellent electrical insulation property. Fourthly, when PAI rods are employed in the semiconductor industry, they can be used for components such as wafer handling, test sockets, and vacuum chamber parts due to its dimensional stability and chemical resistance. Last but not least, they can be utilized in food processing equipment where chemical resistance and high-temperature resistance are critical. 

Wide Applications of PAI Rod

Key Features that PAI rods Present to Enlighten Your Project

Key Features that PAI rods Present to Enlighten Your Project
Key Features that PAI rods Present to Enlighten Your Project

PAI rods exhibit the following key features that make them a popular choice in a wide array of industrial apllications.

Dimensional stability: PAI rods present excellent stability in a wide range of temperatures without changing its properties or shape. 

Chemical resistance: PAI rods show excellent resistance to various chemicals, like bases, solvents, acids and oils. This indeed ensures its reliability and stability in applications.

Electrical insulation: PAI rods exhibit excellent electrical insulation, which makes them suitable for the applications where electrical insulation property is prioritized. For instance, they are typically used for electrical and electronic components.

High temperature resistance: PAI rods can bear the working temperature ranging from -50°C to approximately 260°C (500°F) without significant degradation. Therefore, they can be subject to high-temperature working environments. 

Low thermal expansion: PAI rods are also equipped with a low coefficient of thermal expansion, which means that they expand or contract slightly when exposed to temperature changes. This indeed, helps maintain its dimensional stability and tight precision.

Excellent mechanical properties: PAI rods feature excellent stiffness, toughness, as well as high strength. This, in turn, ensures their outstanding and reliable performance even under tough conditions.

Wear resistance: PAI rods can withstand wear and tear resistance without causing obvious surface damage or degradation. Thus, it is suitable for the applications where friction and abrasion are top priorities.

Low moisture absorption: PAI showcases low moisture absorption rate, thus enhancing its mechanical and electrical properties in humid or wet environments.

Is PAI a thermoplastic material?

Yes, PAI is exactly a thermoplastic material, which exhibits some typical characteristics of thermoplastics, such as the capability of being melted and reformed for multiple times without causing significant degradation in its properties.

What is the tensile strength of PAI?

Depending on the specific grade and formulation of the raw material, the tensile strength of PAI rods can vary from approximately 100 MPa to 150 MPa. Known for its excellent mechanical properties, such as excellent tensile strength, it is suitable for the applications where structural integrity and strength are highlighted.

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Our product manager will give you a quick demand portrait according to your design, drawing, standard, testing methods and other requirements. And we have a strong supporting team to fulfill your demand with our deep technology and know-how base. We can offer you a solution or a few options. And you will decide which one you prefer.

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