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PAI (Torlon)
CNC Machining Service
Enjoy RapidDirect’s expertise in PAI (Torlon) CNC machining. Stand out in your industry with our CNC machining solutions tailored to your unique needs.
PAI in CNC Machining
Polyamide-imide (PAI), known commercially as Torlon, is a high-performance engineering thermoplastic. PAI combines high strength, excellent thermal stability, and superior chemical resistance, making it an ideal material for demanding applications. In CNC machining, PAI’s unique properties allow for the production of parts that perform reliably under extreme conditions. Its high tensile and compressive strength, combined with excellent wear resistance, make it suitable for components exposed to mechanical stress and high temperatures.
| Price: | $$ | Available PAI at RapidDirect: | PAI 4203, 4503, 4301, 4501 |
|---|---|
| Lead Time: | < 10 days |
| Wall Thickness: | Minimum of 0.5 mm |
| Tolerances: | ±0.005″ (±0.125mm) |
| Max Part Size: | 1200 x 500 x 150 mm |
| Applications: | Bearings, seals, electrical connectors, and structural components |
Machined PAI Properties
PAI stands out for its superior toughness and ability to withstand extreme temperatures and harsh chemicals. This material is perfect for high-stress environments where reliability is crucial. Discover why PAI material is a top choice for advanced CNC machining projects.
| Tensile Strength (MPa) | Flexural Strength (MPa) | Compressive Strength (MPa) | Flexural Modulus (GPa): | Impact Strength (Notched Izod) | Hardness (Rockwell) | Thermal Conductivity (W/m·K) |
|---|---|---|---|---|---|---|
| 150 - 200 | 240 - 345 | 138 - 207 | 7.6 - 10.3 | 53 - 106 | M109 - M113 | 0.26 |
Surface Finishing Options for PAI
At RapidDirect, we offer professional surface finishing services to enhance the functionality and appearance of your custom CNC machined PAI parts. Our expertise ensures high-quality finishes that meet your exact specifications.
As machined
PAI can be left with an "as machined" finish, which may retain visible machining marks, but this is suitable for parts where aesthetic appearance is not critical.
Sand Blasting
Sandblasting can be used to remove imperfections and give a uniform matte finish to PAI, though care should be taken to avoid excessive heat generation.
Tumbling
Tumbling can be applied to PAI for deburring and smoothing, but the process must be controlled to avoid damaging the material's surface.
Heat Treatment
PAI can undergo heat treatment processes to enhance its dimensional stability and relieve stresses after machining.
Teflon Coating
Teflon coatings can be applied to PAI to improve its already excellent wear resistance and lower its coefficient of friction.
Painting
PAI can be painted, and its surface can be prepared to hold paint well for aesthetic or functional purposes.
Pros and Cons of
PAI CNC Machining
PAI machining offers a unique blend of advantages and challenges that need to be considered to optimize its application in various projects.
Pros
- High Strength and Stability: PAI maintains its strength and dimensional stability even at high temperatures, making it suitable for demanding applications.
- Excellent Wear Resistance: The material’s durability extends the lifespan of parts, reducing the need for frequent replacements.
- Outstanding Chemical Resistance: PAI withstands harsh chemicals and solvents, ensuring performance in corrosive environments.
- Low Friction and Good Lubricity: These properties are ideal for components like bearings and seals, reducing wear and tear.
- High Thermal Stability: PAI performs well under high temperatures, maintaining its properties without significant degradation.
Cons
- Machining Difficulty: The material’s hardness can pose challenges during machining, requiring specialized equipment and expertise.
- Limited Color Options: PAI is typically available in a limited range of colors, which may not be suitable for all aesthetic requirements.
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FAQs
In CNC machining of PAI, tolerances of ±0.125mm are achievable. This level of precision allows for the production of highly accurate parts that meet stringent specifications. The material’s stability during machining helps maintain these tight tolerances, ensuring consistency across multiple parts and production runs. Specialized equipment and skilled machinists are essential to achieve and maintain these tolerances.
Common parts produced using CNC machined PAI include bearings, seals, electrical connectors, and structural components. In the aerospace industry, PAI is used for high-performance bearings and bushings due to its excellent wear resistance and thermal stability. In the automotive sector, it’s utilized for components like transmission parts and throttle bodies. Electrical connectors made from PAI benefit from its excellent dielectric properties and thermal resistance. Additionally, PAI is used in industrial machinery for parts that require high strength, low friction, and resistance to harsh chemicals.
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