PET vs PVDF — Economical General vs Chemical Specialist
Comparison Overview
PET vs PVDF — Economical General vs Chemical Specialist. Choose PET when cost is the priority, service temp…
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
PVDF — Polyvinylidene Fluoride
Properties
| Property | Value |
|---|---|
| Service Temp. | 150°C |
| Density | 1.78 g/cm³ |
| Tensile Strength | 55 MPa |
| Flexural Modulus | 2,100 MPa |
| Hardness | Shore D80 |
| Flammability | V-0 |
Advantages
- Outstanding chemical resistance
- High purity — minimal extractables
- Excellent UV stability and weather resistance
- Unique piezoelectric properties
- Good flame retardance (V-0)
Applications
Chemical ProcessingSemiconductorWater FiltrationBatteryWire & Cable
Price Level
Med-High
Selection Guidance
✓ Choose PET
Choose PET when cost is the priority, service temperature is below 120°C, and only moderate mechanical and chemical resistance are needed.
✓ Choose PVDF
Choose PVDF when strong chemical resistance, high purity, or excellent weather resistance is needed.
Price Reference
PET: Low
PVDF: Med-High
PVDF is typically 4-6x the price of PET.
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