A-A-52099
Table I. Physical requirements. (cont’d)
|
Type I |
|||||
|
Characteristics |
Class 1 |
2 |
3 |
Type II |
Test method 1/ FED-STD-191 |
|
Breaking strength (pounds minimum) |
|
|
|
|
|
|
warp |
40 |
40 |
40 |
45 3/ |
5100 |
|
filling |
50 |
50 |
50 |
25 3/ |
5100 |
|
Discoloration |
fair |
fair |
|
fair |
5660 4/ |
|
Presence of labile sulfur |
|
|
slight |
|
2020 |
|
Colorfastness to |
|
|
|
|
|
|
laundering (3 cycle) |
|
|
good |
|
5610 5/ |
|
perspiration |
|
|
good |
|
5680 |
|
light |
|
|
good |
|
5680 |
|
crocking |
|
|
3.5 6/ |
|
5651 |
|
Shrinkage in laundering (percent maximum) |
20 |
2 |
2 |
20 |
5550 7/ |
|
Absorbency (percent minimum) |
60 |
65 |
65 |
60 |
5502 |
|
Nonfibrous materials (percent maximum) |
2 |
2 |
2 |
2 |
2611 |
|
pH |
|
|
|
|
|
|
min |
5.5 |
5.5 |
5.5 |
5.5 |
2811 |
|
max |
9.5 |
9.5 |
9.5 |
9.5 |
2811 |
1/ The test method indicated, from FED-STD-191 Textile Test Method, 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.
2/ Determined on single ply of panel, but both single panels shall conform to this requirement.
3/ Utilizing two plys of panel.
4/ Except that time of exposure shall be for 20 standard fading hours.
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