A-A-50160
TABLE I. Physical requirements
Requirements
|
Characteristics |
Type I |
Type II |
Type III |
Test method 1/ |
|
Weight, oz./sq. yd. (min) |
3.5 |
3.2 |
3.0 |
ASTM D 3776 2/ |
|
Yarn |
Combed |
Combed |
Combed |
- |
|
Yarns per inch (min): |
||||
|
Warp |
148 |
140 |
98 |
ASTM D 3776 2/ |
|
Filling |
72 |
58 |
56 |
ASTM D 3776 2/ |
|
Breaking strength, lbs (min): |
||||
|
Warp |
68 |
70 |
55 |
ASTM D 1682 2/ |
|
Filling |
32 |
25 |
24 |
ASTM D 1682 2/ |
|
Dimensional stability percent (max) |
||||
|
Warp |
2.0 |
2.0 |
2.0 |
5550 3/ |
|
Filling |
2.0 |
2.0 |
2.0 |
5550 3/ |
|
Discoloration (bleach cloth) |
Fair |
Fair |
Fair |
5660 3/ 4/ |
|
Non-fibrous material, percent (max) |
2.0 |
2.0 |
2.0 |
2611 3/ |
|
Colorfastness (dyed cloth): |
||||
|
Light |
Good |
Good |
Good |
5660 3/ |
|
Crocking (min) 5/ |
3.5 |
3.5 |
3.5 |
5651 3/ |
|
Perspiration |
Good |
Good |
Good |
5680 3/ 6/ |
|
Laundering (after three cycles) |
Good |
Good |
Good |
5610 3/ 7/ |
1/ The test methods indicated have been found acceptable to determine if 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 (see 3.1).
2/ Refers to American Society for Testing and Materials (ASTM)
3/ Refers to FED-STD-191 Textile Test Methods
4/ Except the exposure of the specimen shall be for 20 standard hours.
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