MIL-DTL-23053/8C
TABLE II. Physical properties. - Continued
Characteristic
Requirement
Test procedure and conditions
Heat resistance,
4.6.9 250° ± 3°C
properties after:
(482° ±5.4°F), 168 hours
Ultimate elongation
50
percent, minimum
Fluid resistance,
4.6.11
properties after:
Tensile strength,
5,000 (34.5)
psi (MPa), minimum
Dielectric strength,
500 (19.7)
volts/roil (Kv/mm),
minimum
Flammability
3/
4.6.14 Procedure C
ASTM D2671
Corrosion 4/
No corrosion
4.6.2 ASTM G21
Fungus resistance 5/
I No growth
Test procedure in accordance with ASTM D4591. Melting point calculated
1/
as specified in "Melting endotherm peak" of ASTM D3222.
2/
Low temperature flexibility test specimens and mandrels:
Specimens of
size 0.187 inch (4.75 mm) and smaller shall be tested as whole-sections of
sleeving without shrinking on conductors.supplied without shrinking on
conductors. Specimens of larger sizes larger than 0.187 inch (4.75 mm)
shall be 0.250 inch (6.35 mm) inch wide strip cut from as supplied
sleeving, then shrunk. Mandrels shall be 10 times the specimen O.D. ±1O%
for tubular specimens or 10 times the specimen thickness ± 10% for strip
specimens.
3/
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.
4/
MIL-I-23053/8 materials are non-corrosive at operating temperatures.
Performance of this requirement is at the option of the acquiring
activity (see 6.2).
4
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