Physical Properties of TEFZEL® Film
TEFLON®/TEFZEL® Films and Products
| TEFZEL® Coatings Properties & Statistics | Film Gauge 50 | Film Gauge 100 | Film Gauge 200 | Film Gauge 500 | Film Gauge 1000 | Film Gauge 2000 | Method |
|---|---|---|---|---|---|---|---|
| Tensile Strength of TEFZEL® Coatings, psi, 25°C minimum | 5000 | 6000 | 6000 | 6000 | 6000 | 6000 | ASTM D-882 for >/- 10 mil thickness. ASTM D-638 for > 10 mil thickness, 2 inch per minute testing speed. |
| Elongation at Break, % (Minimum) | 175 | 200 | 250 | 250 | 250 | 250 | Same as above |
| Shrinkage, % (Maximum at 200°C) MD | ±5 | ±5 | ±3 | ±2 | ±2 | ±2 | Each specimen, 4" x 4" freely suspended in an oven controlled to 200°C ±1°C. |
| Shrinkage, % (Maximum at 200°C) TD | ±5 | ±5 | ±3 | ±2 | ±2 | ±2 | Exposure time 0.5 hours |
| Tear Strength (g/mil), minimum | 300 | 300 | 400 | 400 | 400 | 400 | Elmendorf ASTM D-1922 |
| Cementability (Type C film only) Minimum peel strength in g/in. of width | 170 | 300 | 750 | 2000 | — | — | Use DuPont adhesive #68040 on Aldine #1200 aluminum sheet (0.019" thick). Peel Test at 180° angle at peel rate 12 inches/min. 12 inches/min. |
| Dielectric Strength volts/mil, AC minimum | 4000 | 4000 | 3500 | 2500 | 1800 | 1400 | Avg. of 10 samples testes per ASTM D-149 Method A. Flat sheets in air placed between 1/4" diameter brass electrodes with 1/32" edge radius & subjected to 60 Hz. A.C. voltage rise at 500 volts/sec. to the break voltage. |
| Melt Temperature (Melting Endotherm Peak), °C | 250-270 | ASTM D-3418 (DTA) | |||||
| Density (g/cm3). 23°C | 1.73-1.77 | ASTM D-1505 | |||||
| Dielectric Constant (at 25°C, 1000 Hertz), Maximum | 2.7 | ASTM D-150. Result is average of 5 tests using measured sample thickness. | |||||
| Dissipation Factor (at 25°C, 1000 Hertz), Maximum | .0008 | ASTM D-150, same as above | |||||
| Volume Resistivity, ohm-cm. at 170°C, Minimum | 1 x 1017 | ASTM D-257 | |||||
| Surface Resistivity, ohm (per sq.) at 23°C, 38% R.H. minimum | 1 x 1015 | ASTM D-257 | |||||
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