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Page Title:
Table 1. Maximum Permissible Dimensional Changes |
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|  MIL-F -81526B (AS)
3.4. 1.3 Dimensional Stability - The maximum permissible dimensional
changes after processing and fungus and moisture treatment under various
temperature and relative humidity ranges shall be as listed in Table 1.
TABLE 1
MAXIMUM PERMISSIBLE DIMENSIONAL CHANGES
Max. Change
Test Condition
Characteristic
O. 00035 Yo/lyo RH
Between 15 % RH and 50% RH at
Humidity Coefficient of
Expansion (Unprocessed) 21. lC (70" F)
o. 00015%
20% RH between 21. 10C (70 F)
Thermal Coefficient of
and 120F' (48. 90G)
Expansion
-0.0270
Preconditioned to low
Processing Dimensional a.
humidity prior to conditioning
Change
at 50% RH
-0. 05%
Unprocessed film precondi-
b.
tioned to low humidity and
processed film to high humidity
prior to conditioning at 50% RH
*o, 0370
c. Unprocessed and processed
film preconditioned to high
humidity prior to conditioning
at 10% RH
0007
7 days at 20% RH and 48. 9C
Processing and Acceler-
ated Aging Shrinkage
6
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