PAI vs PET — Premium Performance vs Budget Choice
Comparison Overview
PAI vs PET — Premium Performance vs Budget Choice. Choose PAI when the application must withstand ext…
PAI — Polyamide-imide
Properties
| Property | Value |
|---|---|
| Service Temp. | 260°C |
| Density | 1.40 g/cm³ |
| Tensile Strength | 120 MPa |
| Flexural Modulus | 4,500 MPa |
| Hardness | Rockwell E95 |
| Flammability | V-0 |
Advantages
- Highest continuous service temperature (260°C)
- Excellent mechanical strength and rigidity
- Outstanding wear and creep resistance
- Excellent dimensional stability
- Good chemical resistance
Applications
AerospaceSemiconductorAutomotiveOil & Gas
Price Level
High
PET — Polyethylene Terephthalate
Properties
| Property | Value |
|---|---|
| Service Temp. | 120°C |
| Density | 1.38 g/cm³ |
| Tensile Strength | 75 MPa |
| Flexural Modulus | 2,800 MPa |
| Hardness | Rockwell M90 |
| Flammability | HB |
Advantages
- Excellent cost-performance ratio
- Good mechanical properties
- Excellent electrical insulation
- Good chemical resistance
- Excellent processability
Applications
Food PackagingMechanical PartsElectrical InsulationAutomotive InteriorTextile Machinery
Price Level
Low
Selection Guidance
✓ Choose PAI
Choose PAI when the application must withstand extreme temperatures above 260°C, high loads, and aggressive chemical environments.
✓ Choose PET
Choose PET when cost is the priority, service temperature is below 120°C, and only moderate mechanical properties are needed.
Price Reference
PAI: High
PET: Low
PAI costs 10-20x or more compared to PET.
Need Selection Advice? Contact Us for a Quote
Our engineers will recommend the best material solution for your application
Contact JEKIN →