This specification covers the standard requirements for iron wire with Class A, Class B, and Class C zinc coatings suitable for use in telephone, telegraph, and signal transmission lines. The zinc used for the coatings shall be of any grade while the base metal shall be made by any commercially-accepted steel-making process. The wire shall be furnished in coils of one continuous length and the welds made prior to the final drawing shall be permitted. Stripping, mechanical, and electrical tests shall be performed, wherein the specimens shall conform to the following required physical, mechanical, and electrical properties: weight and adherence of the coating; breaking strength, elongation, and ductility of the galvanized wire; and weight resistivity of the wire. Finished products shall be furnished in compact coils reasonably symmetrical in shape and marked showing the size, grade, class of coating, ASTM designation, and the name or mark of the manufacturer.

1.1 This specification covers “iron” wire with Class A, Class B, and Class C zinc coatings, suitable for use in telephone, telegraph, and signal transmission.

1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are for information only.