PAI vs PVDF — High-Temp Strength vs Chemical Resistance
Comparison Overview
PAI vs PVDF — High-Temp Strength vs Chemical Resistance. Choose PAI for sustained mechanical loads at high …
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
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 PAI
Choose PAI for sustained mechanical loads at high temperatures (>260°C).
✓ Choose PVDF
Choose PVDF for strong acid/alkali corrosive environments or high-purity material requirements such as ultrapure water systems and chemical pipe linings.
Price Reference
PAI: High
PVDF: Med-High
PAI is typically 2-3x more expensive than PVDF.
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