A-A-52096
2.2 Physical requirements. The finished cloth shall conform to the requirements listed in table I.
TABLE I. Physical requirements
|
Requirements |
|||
|
Characteristics |
Type I |
Type II |
Test method 1/ |
|
Material identification |
Nylon |
Nylon |
1530 |
|
Weight, oz. / sq. yd. (min) |
7.0 |
5.6 |
5041 |
|
Yarns per inch (min): |
|
|
|
|
Warp |
38 |
66 |
5050 |
|
Filling |
36 |
54 |
5050 |
|
Breaking strength, lbs. (min): |
|
|
|
|
Warp |
210 |
280 |
5100 |
|
Filling |
200 |
240 |
5100 |
|
After accelerated aging: |
|
|
|
|
Warp |
105 |
140 |
5850 2/ |
|
Filling |
100 |
120 |
5850 2/ |
|
Adherence (max) |
NONE |
|
3/ |
1/ The test methods indicated, from FED-STD-191 Textile Test Methods, have been found acceptable to determine whether the cloth meets the stated requirements. If the government requires proof that the cloth meets the stated requirements, the test methods indicated shall be used.
2/ Except that five specimens from each of the warp and filling directions shall be tested and conditioned at 384 ± 40F for 5 hours. After removal from the oven, the specimens may be tested as soon as they have reached moisture equilibrium with testing environment atmospheric conditions (temperature and humidity).
3/ Adherence test method. A sample of finished cloth 5 ± 0.5 inches square shall be placed on a flat surface. A heated hand iron, without any anti-stick agent treatment, weighing 4 to 5 pounds, with a temperature of 3250F to 3350F shall be placed on top of the sample for 60 seconds. After 60 seconds, the iron shall be lifted and observed for adherence of the specimen to the iron surface. The test is considered a failure if the specimen adheres to the iron when the iron is listed off the flat surface.
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