Advantages
High strength and stiffness, good creep, fatigue and wear resistance, and useful chemical, radiation and electrical performance. Reference continuous service is around 250°C.
PAI
PAI is a high-performance polymer used for precision components carrying loads at elevated temperatures.
Define the precision requirement at the working temperature
For a loaded component considered in PAI, tell Aria the temperature, operating conditions and fits that matter. We can review the material choice with the geometry and inspection requirements. Include the specified grade and final material condition so the quotation and acceptance discussion refer to the same component.
Material options
| Property | Details |
|---|---|
| Available variants | PAI Brown |
| Colors | Natural dark yellow-brown |
| Special properties | Carbon/graphite/PTFE wear grades and glass-filled grades are separate options; do not assume their properties for 4203L. |
Detailed values describe Solvay Torlon 4203L, unfilled PAI (2014-10-22). Family ranges are broader selection references and may include different grades or reinforcement levels. Confirm the selected grade, condition and test method for your part.
Material properties
| Property | Metric | Imperial | Test method / conditions |
|---|---|---|---|
| Density | 1.42 g/cm³ | 0.0513 lb/in³ | ASTM D792 · 23°C · Reference: Solvay Torlon 4203L, unfilled PAI (2014-10-22) |
| Molding Shrinkage | 0.60~0.85 % | 0.60~0.85 % | ASTM D955 · Flow direction · Reference: Solvay Torlon 4203L, unfilled PAI (2014-10-22) |
| Water Absorption (24 hr) | 0.33 % | 0.33 % | ASTM D570 · 24h · Reference: Solvay Torlon 4203L, unfilled PAI (2014-10-22) |
| Tensile Modulus | 4,480 MPa | 650,000 psi | ASTM D638 · 23°C · Reference: Solvay Torlon 4203L, unfilled PAI (2014-10-22) |
| Tensile Strength | 152 MPa | 22,000 psi | ASTM D638 · 23°C · Reference: Solvay Torlon 4203L, unfilled PAI (2014-10-22) |
| Tensile Elongation at Break | 7.6 % | 7.6 % | ASTM D638 · 23°C · Reference: Solvay Torlon 4203L, unfilled PAI (2014-10-22) |
| Flexural Modulus | 5,030 MPa | 730,000 psi | ASTM D790 · 23°C · Reference: Solvay Torlon 4203L, unfilled PAI (2014-10-22) |
| Flexural Strength | 241 MPa | 35,000 psi | ASTM D790 · 23°C · Reference: Solvay Torlon 4203L, unfilled PAI (2014-10-22) |
| Compressive Strength | 221 MPa | 32,000 psi | ASTM D695 · 23°C · Reference: Solvay Torlon 4203L, unfilled PAI (2014-10-22) |
| Notched Izod | 140 J/m | 2.6 ft·lb/in | ASTM D256 · 23°C · Reference: Solvay Torlon 4203L, unfilled PAI (2014-10-22) |
| HDT (1.80 MPa) | 278 °C | 532 °F | ASTM D648 · 1.80 MPa, unannealed · Reference: Solvay Torlon 4203L, unfilled PAI (2014-10-22) |
| Glass Transition Temp. | 277 °C | 531 °F | DSC · Reference: Solvay Torlon 4203L, unfilled PAI (2014-10-22) |
| CLTE | 3.1×10⁻⁵ /°C | 1.7×10⁻⁵ /°F | ASTM E831 · Flow direction · Reference: Solvay Torlon 4203L, unfilled PAI (2014-10-22) |
Material family ranges — selection reference
| Property | Family reference |
|---|---|
| Material class | High-performance plastic |
| Density (g/cm³) | 1.40–1.45 |
| Tensile strength (MPa) | 150–210 |
| Elongation at break (%) | 6–17 |
| Elastic modulus (GPa) | 4.5–5.0 |
| Hardness | R120–R125 |
| Temperature reference (°C) | HDT 270–280 |
Compatible manufacturing processes
Selection requirements
- CNC Milling Services · Injection molding · Precision CNC machining · CNC turning
CNC milling and turning of stock, or specialized high-temperature injection molding followed by the required curing cycle. Allow for multi-day post-curing where required, stress-relief annealing and moisture control for close tolerances. Confirm final properties after the specified post-treatment.
Advantages and considerations
Material limitations
High cost, demanding processing and moisture uptake. Molded parts require extended post-curing, which affects delivery time; machined parts may need annealing.
How Aria supports your project
Help choosing a material
Compare materials for the loads, temperature and environment your part will face.
Design feedback before production
We review tool access, geometry and material choice before manufacturing.
Inspection to your drawing
Dimensional checks and inspection reports for the critical features on your drawing.
Compatible surface finishes
Selection requirements
- Laser engraving
Allow for multi-day post-curing where required, stress-relief annealing and moisture control for close tolerances. Confirm final properties after the specified post-treatment. Laser marking and plasma pretreatment for bonding. Electroplating is generally unsuitable.
Applications
Typical applications
Aerospace parts, semiconductor test and wafer-handling components, high-temperature bearings, bushings, thrust washers, valve seats and electrical parts.
Design considerations
Processing options
CNC milling and turning of stock, or specialized high-temperature injection molding followed by the required curing cycle.
Finishing options
Laser marking and plasma pretreatment for bonding. Electroplating is generally unsuitable.
Grade and finish combinations
Allow for multi-day post-curing where required, stress-relief annealing and moisture control for close tolerances. Confirm final properties after the specified post-treatment.
Color and grade options
Natural dark yellow-brown. Custom colors are limited by grade.
Start a project
Get a quote for your parts
Upload your CAD files and tell us the material and quantity you need.
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