RR-W-410 Wire Rope And StrandThis specification covers wire ropes and wire seizing strands see 6.1. This specification does not include all types, classes, constructions, and sizes of wire rope and strand that are commercially available, but it is intended to cover the more common types, classes, constructions, and sizes that are suitable for federal government use.

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RR-W-410G

4.2 Sampling.

4.2.1 Lot. A lot shall consist of wire rope or strand of one size, type, class, construction and material produced by one machine or by a series of progressive processing machines. A lot shall consist of a maximum of five production lengths.

4.2.2 Production length. A production length is that length of wire rope manufactured in one continuous operation from one loading of the closing machine comprising strands, each of which has been produced in one continuous operation on the stranding machine.

4.2.3 Test sample. One test sample, of sufficient length to perform all tests, shall be taken from each lot.

4.2.4 Sampling for rope wire tests. Sampling for rope main wires shall be in accordance with

ASTM A1023/A1023M.

4.3 Examination.

4.3.1 Visual examination. Each production length shall be visually examined for workmanship and lubrication.

4.3.2 Examination of diameter. The examination of the wire rope or strand diameter shall be made in accordance with ASTM A1023/A1023M.

4.3.3 Examination of rope lay. The length of 5 or more rope closing lays shall be measured beginning not less than 10 feet from the end of the production length. The distance measured on a straight length of rope shall be divided by the number of pitches, in order to arrive at the pitch size of the length of a single lay.

4.3.4 Examination for lubricant. The examination of wire strands and cores for lubrication shall be made during the closing of the wire rope. The lubricant shall be sufficient to coat the wire strands, wire cores, independent wire rope cores, and to impregnate fiber cores as specified

in 3.6.

4.4 Test methods.

4.4.1 Strength.

4.4.1.1 Breaking strength (force) test of finished wire ropes and strands. The breaking strength (force) of wire ropes or strands shall be determined in accordance with ASTM A1023/A1023M. The minimum breaking strength (force) shall be as shown in the applicable tables herein and applicable tables in ASTM A1023/A1023M.

4.4.1.2 Tensile test of rope wires. The tensile strength of rope wires shall be determined in accordance with ASTM A1023/A1023M. The tensile strength of the main wires shall conform to the tensile strength requirements shown in table I and ASTM A1023/A1023M, as applicable.