PAI vs PEEK — Battle of High-Temperature Champions
Comparison Overview
PAI vs PEEK — Battle of High-Temperature Champions. Choose PAI when service temperature approaches 260…
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
PEEK — Polyetheretherketone
Properties
| Property | Value |
|---|---|
| Service Temp. | 260°C |
| Density | 1.32 g/cm³ |
| Tensile Strength | 100 MPa |
| Flexural Modulus | 4,000 MPa |
| Hardness | Rockwell M99 |
| Flammability | V-0 |
Advantages
- Best all-round balanced performance
- Excellent chemical resistance — nearly no solvent attack
- Excellent biocompatibility (ISO 10993)
- Good processability
- Outstanding wear and fatigue resistance
Applications
AerospaceMedical ImplantsSemiconductorAutomotiveFood Processing
Price Level
High
Selection Guidance
✓ Choose PAI
Choose PAI when service temperature approaches 260°C and maximum mechanical strength and wear resistance are required (e.g., bearings, seals).
✓ Choose PEEK
Choose PEEK when better all-round balance, superior chemical resistance, or easier processability is needed, or when biocompatibility is required.
Price Reference
PAI: High
PEEK: High
PAI is typically 20-40% more expensive than PEEK; PEEK offers better value.
Need Selection Advice? Contact Us for a Quote
Our engineers will recommend the best material solution for your application
Contact JEKIN →