PPSU vs PET — High-Performance Transparent vs Practical Economy
Comparison Overview
PPSU vs PET — High-Performance Transparent vs Practical Economy. Choose PPSU when 180°C temperature rating, excelle…
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
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 PPSU
Choose PPSU when 180°C temperature rating, excellent impact toughness, transparency, repeated steam sterilization, or humid environment use is required.
✓ Choose PET
Choose PET when cost is the deciding factor, service temperature is below 120°C, and moderate performance is acceptable.
Price Reference
PPSU: Medium
PET: Low
PPSU is typically 5-8x the price of PET.
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