MIL-DTL-23053/5C
TABLE II. Physical properties. 1/ - Continued
Characteristic
Requirement
Test procedure and condition
Heat resistance,
4.6.9 for 168 hours,
property after:
Classes 1 & 2: 175° ± 2°C
(347° ± 4°F)
Class 3: 150° ± 2°C
Ultimate
100
(302° ± 4°F
elongation,
percent, minimum
Fluid resistance,
property after:
Tensile strength,
1,000 (6.9)
4.6.11
psi (MPa),
minimum
Dielectric strength
400 (15.8)
volt/roil (Kv/mm),
minimum
Fungus resistance 2/
No growth
4.6.2 ASTM G21
1/
Unless otherwise specified, the stated requirements, test conditions and
procedures are for all classes.
2/
MIL-I-23053/5 materials do not normally support fungus growth.
Performance of this requirement is at the option of the acquisition
activity (see 6.2k).
3/
Dielectric constant is a requirement only when specified in acquisition
document (see 6.2f).
4/
Record whether any flaming or glowing particles or flaming drops fall from
the specimen.
If more than 25 percent of the indicator flag is burned
away or charred (brown scorching and soot shall be ignored) after all of
the five applications of flame or if flaming or glowing particles or
flaming drops fall from the specimen at any time and ignite the cotton
(flameless charring of the cotton shall be ignored), the specimen shall be
judged to have conveyed flame and shall be considered as failing. In
addition, any specimen which continues to flame or glow from one flame
application longer than one minute shall not be acceptable.
Storage life conditions: Supplier shall certify to storage at 18° to 35°C
(65° to 95°F) for 5 years. Conformance to 3.5. See 3.5.2 for storage life
extension.
6
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