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Formula: PCTFE, PTCFE
Form: Rod
Material: Polychlorotrifluoroethylene (PCTFE, PTFCE)
CAS Number: 9002-83-9
Commodity: Polymers
PCTFE Rod offers a unique combination of high strength, low deformation under load, and exceptional resistance to moisture and chemicals. Its stability over a broad temperature range and low gas permeability make it ideal for precision-machined parts in harsh or moisture-sensitive environments. Industries such as aerospace, cryogenics, and semiconductor manufacturing use PCTFE rods for seals, valve seats, and structural components in corrosive or low-temperature systems. Specific applications include cryogenic pump components, chemically resistant precision spacers, and structural supports in semiconductor processing tools. In research, PCTFE rods enable testing of polymer performance in extreme thermal and chemical conditions, as well as studies on long-term dimensional stability. Their unique performance profile makes them a top choice for specialized engineering applications requiring both mechanical reliability and environmental resistance.
Tolerances
Rod
| Diameter | +20% / -10% |
|---|
Material Properties for Polymers
Chemical Resistance
| Element | Value |
|---|---|
| Acids - concentrated | Good |
| Acids - dilute | Good |
| Alcohols | Good |
| Alkalis | Good |
| Aromatic hydrocarbons | Good |
| Greases and Oils | Good |
| Halogens | Good |
| Ketones | Good |
Electrical Properties
| Element | Value |
|---|---|
| Dielectric constant @1MHz | 2.24-2.8 |
| Dissipation factor @ 1kHz | 0.023-0.027 |
| Dissipation factor @ 1MHz | 0.01 |
| Dielectric strength( kV mm⁻¹ ) | 14 |
| Surface resistivity( Ohm/sq ) | 10¹⁵ |
| Volume resistivity( Ohmcm ) | 10¹⁶ |
Physical Properties
| Element | Value |
|---|---|
| Flammability | V-0 |
| Refractive index | 1.435 |
| Water absorption( % ) | 0.01 |
| Density( gcm⁻³ ) | 2.1-2.14 |
Mechanical Properties
| Element | Value |
|---|---|
| Hardness - Rockwell | D75-90 - Shore |
| Hardness - Rockwell | D75-90 - Shore - |
| Hardness - Rockwell | R75-112 - V-0 |
| Hardness - Rockwell | R75-112 |
| Elongation at break( % ) | 80-250 |
| Tensile modulus( GPa ) | 1.3-1.8 |
| Izod impact strength( J m⁻¹ ) | 267 |
| Tensile strength( MPa ) | 31-41 |
Thermal Properties
| Element | Value |
|---|---|
| Heat-deflection temperature - 0.45MPa( C ) | 126 |
| Lower working temperature( C ) | -240 |
| Upper working temperature( C ) | 120-149 |
| Specific heat( J K⁻¹ kg⁻¹ ) | 900 |
| Thermal conductivity( W m⁻¹ K⁻¹ ) | 0.13 |
| Coefficient of thermal expansion( x10⁻⁶ K⁻¹ ) | 70 |
Pultrusions
| Element | Value |
|---|---|
| Compressive strength( MPa ) | 09-Dec |
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