Property | ASTM Method | Sample Dimensions (thickness) | Conventional PTFE (Literature) | Gore PTFE (Test Data) |
Flex Life (MM cycles) |
ASTM-D-2176 | 0.020in 0.600in | 4.1 | 70+* |
Impact Strength (ft lbs/in) |
ASTM-D-256 | 0.220 in | 2 – 3.5 | 30.4 |
Tensile Strength (psi) | ASTM-D-638 | 0.220 in | 4000-5200 | 14920 |
Mullins Burst (psi) | ASTM-D-3786 | 0.020 in | 180** | 540 |
Tensile Creep (1000 hr 1000 psi) |
ASTM-D-2990 | 0.100 in | 20%-30%** | 9%-10% |
Sample dimensions are given to compare conventional PTFE to Gore’s PTFE for testing purposes and do not represent actual diaphragm dimensions.
* Test was stopped over time
** Actual test results for conventional PTFE film.