MIL-DTL-24643/17F
Group C:
Physicals (aged) air oven
Jacket (cable)
Tensile strength (percent of unaged, min.)
60
Elongation (percent of unaged, min.)
60
Permanence of printing (insulation, Method 1 only) (cycles, min.)
25
Permanence of printing (jacket) (cycles, min.)
125
Heat distortion (percent of unaged, max.)
30
Cable fill (sealant) removability
No failure
Shrinkage
No failure
Group D:
Flame propagation (cable)
No failure
Qualification Inspection:
Qualification inspection shall include basic electricals; groups A, B, C, and D; plus the following:
Cold working (minus 20±2 °C)
No damage
Gas flame (3 hours)
No failure
Accelerated service (Sizes 23 and larger) (see table I for load current)
No failure
Aging and compatibility (cable) (125±5 °C)
No failure
Abrasion resistance (jacket) (scrapes, min.)
75
Acid gas equivalent (percent, max.)
Jacket
2
Fillers
2
Insulation
18
Halogen content (percent, max.)
Jacket
0.2
Fillers
0.2
Insulation
0.2
Immersion (jacket)
Tensile strength (percent of unaged, min.)
50
Elongation (percent of unaged, min.)
50
Smoke index (max.)
Jacket
25
Fillers
45
4
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