MIL-DTL-23053/4D
TABLE II. Physical properties.
Characteristic
Requirement
Test procedure and condition
As supplied:
ID, minimum
Table I
4.6.3
Cold impact
No cracking
4.6.7.2 ASTM D746,
-55° ± 2°C (-67 ± 4°F)
Heat shock
4.6.8 250° ± 3°C
No cracks,
(482° ± 6°F) 1/
flowing or
dripping of
outerwall
Sealing efficiency
No openings
2/
(Classes 1 and 3
on reheat
only)
Class 1 - 25,000
Secant modulus, psi
4.6.12.1, ASTM D882, 2
(172) minimum
(MPa)
percent strain
Cl 2 & 3 - 25,000
(172) maximum
4.6.15 175° ± 2°C
Color stability
Pass
(347° ± 4°F), 24 hours
After unrestricted
shrinkage:
4.6.3
ID, maximum
Table I
4.6.3
Wall thickness
Table I
Tensile strength,
Classes 1 & 2 -
4.6.12, ASTM D638, 20
psi (MPa), minimum
1,500 (10.3)
inches/minute
Class 3 - 1,300
(9.0)
Ultimate elongation,
4.6.12, ASTM D638, 20
Classes 1 & 2 -
percent minimum
inches/minute
200
Class 3 - 250
3
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