MIL-DTL-3432J
APPENDIX A
A.3 PHYSICAL PROPERTY REQUIREMENTS
TPE-O
TPE-S
Unaged
Tensile strength, minimum psi
1,000
1,000
Elongation, minimum%
250
250
Tear strength, minimum lb/in, using ASTM D624, die C 150
150
Tensile strength at 100% modulus, minimum psi
200
200
* Air oven aging, 168 hours ± 1 hour at 136±1°C:
Tensile strength retention, minimum %
80
80
Elongation, minimum % of original
65
65
* Oil immersion (ASTM # 2 oil), 18 hours ± 0.5 hour at 121±1°C (jacket only):
Tensile strength retention, minimum %
75
75
Elongation, minimum % of original
75
75
Ozone resistance (after air-oven conditioning).
168 ± I hour in ozone (jacket only) at 50°C
No cracking
No cracking
Brittleness temperature:
Unaged, maximum °C
-55
-55
Aged, maximum °C
-55
-55
Maximum torsional stiffness ratio:
10
10
Cold tension recovery (minimum % at -55°C):
TBD
TBD
* In lieu of doing performance tests, supplier may also provide a certificate of compliance in accordance with
UL 1581 if it conforms to the values specified in this appendix.
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