PEEK vs PPSU — High-Temp All-Rounder vs Hydrolysis Toughness
Comparison Overview
PEEK vs PPSU — High-Temp All-Rounder vs Hydrolysis Toughness. Choose PEEK when service temperature exceeds 180°C…
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
PPSU — Polyphenylsulfone
Properties
| Property | Value |
|---|---|
| Service Temp. | 180°C |
| Density | 1.29 g/cm³ |
| Tensile Strength | 70 MPa |
| Flexural Modulus | 2,400 MPa |
| Hardness | Rockwell M85 |
| Flammability | V-0 |
Advantages
- Best-in-class hydrolysis resistance
- Outstanding impact toughness
- Excellent thermal stability at 180°C
- Good transparency
- Withstands repeated steam sterilization
Applications
Medical DevicesFood ServiceAerospaceWater TreatmentInfant Care
Price Level
Medium
Selection Guidance
✓ Choose PEEK
Choose PEEK when service temperature exceeds 180°C, or when excellent chemical resistance or biocompatibility is needed.
✓ Choose PPSU
Choose PPSU for repeated steam sterilization, excellent impact toughness, or humid/wet environment applications.
Price Reference
PEEK: High
PPSU: Medium
PEEK is about 1.5-2x more expensive than PPSU.
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