Crack Resistance

Method 4.8.30 is a crack resistance test for glass braid covering on cable insulation. The glass braid covering shall withstand bending, cracking, and puncturing of the overlay covering.Each specimen consists of a single insulated conductor (including insulation covering) of a length not less than that specified in table XV. Specimens are removed from the completed […] Read more

Tear Strength

Method 4.8.19 is a tear strength test that determines the ability of elastomeric jacketing material to withstand the propagation of a cut passing through a portion of its length.The specimen consists of a piece of jacketing material cut to the dimensions specified in ASTM D470. Specimens are removed from the completed cable, and a minimum […] Read more

Physical Tests (Aged) on Insulation and Jacket

Method 4.8.18 performs physical tests on aged insulation and jacket materials to determine by means of tension measurements whether various insulating and jacketing materials have been properly processed. This test makes provision for making tension measurements both before and after these materials have been artificially aged.Each specimen consists of a single piece of insulation or […] Read more

Permanence of Printing (Jacket)

Method 4.8.17 tests the permanence of printing on the cable jacket to determine the ability of printed information on jacketing material to remain legible in the presence of repeated abrasion.The specimen consists of a piece of completed cable of sufficient length for the test. The apparatus includes an abrading machine that supports and secures the […] Read more

Permanence of Printing (Conductor Insulation)

Method 4.8.16 tests the permanence of printing on conductor insulation to determine the ability of printed information on insulated conductors to remain legible in the presence of repeated abrasion.Specimens consist of single insulated conductors of sufficient length for the test. For cables containing four or fewer conductors, one specimen is removed from each insulated conductor. […] Read more

Hydrostatic (Open End)

Method 4.8.15 is a hydrostatic test (open end) that determines the ability of completed cable, which is intended to pass through watertight bulkheads, to prevent the longitudinal flow of high-pressure water when properly installed in a bulkhead penetrator.The specimen consists of a 60 +/- 2 inch length of completed cable. Armored cable shall have the […] Read more

Cold Working (Minus 20℃)

Method 4.8.9 is a cold working test at minus 4 +/- 4F (minus 20 +/- 2C) that determines the ability of completed cable, which is not intended to be flexed during use, to withstand a traveling bend at a reduced temperature such as might be encountered during shipboard construction or repair.The specimen consists of a […] Read more

Cable Sealant Removability

Method 4.8.6 tests cable sealant removability to determine whether filler materials can be readily removed from the constituent components of cable. This test does not apply to filler material used to fill voids between either conductor strands or braid strands.The specimen is a 2-foot +/- 2-inch length of completed cable. Overall specimen components such as […] Read more

Cable Aging and Compatibility 257°F (125 ℃)

Method 4.8.5 is a cable aging and compatibility test performed at 257F (125C) to detect any significant degradation due to component incompatibility or prolonged overheating of completed cable containing thermosetting polyolefin or silicone rubber and glass tape insulation.The dielectric strength values specified shall be met after the tapes have been conditioned for 24 hours at […] Read more

Cable Aging 500°F (260 ℃)

Method 4.8.4 is a cable aging test conducted at 500F (260C) to determine the ability of armored cable with silicone rubber insulation and jacketing to withstand accelerated heat aging conditions.The specimen consists of a 48 +/- 1 inch length of completed cable. The apparatus includes a forced fresh air circulating oven for supporting the test […] Read more

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