This specification covers zinc-coated parallel and helical steel wire structural strands for use where a high-strength, high-modulus, multiple-wire tension member is desired as a component part of a structure. Breaking strength is expressed as Grade 1 or 2, while, coating weight is expressed as Class A, B, or C. Strands shall be furnished with Class A weight zinc-coated wires throughout, but may be furnished with Class B or C weight wires as well where additional corrosion protection is required. The base metal shall be carbon steel manufactured by the open-hearth, basic-oxygen, or electric-furnace process Finished strands and the hard-drawn individual zinc-coated wires shall be coated by the hot-dip or electrolytic process. Specimens shall be tested and conform to values of the following physical requirements: nominal diameter, stress at specified extension under load, tensile strength, total elongation, ductility, and coating weight and adherence.

1.1 This specification covers zinc-coated steel wire structural strand, for use where a high-strength, high-modulus, multiple-wire tension member is desired as a component part of a structure. The strand is available with parallel or helical wire construction.

1.1.1 The strand is available with several zinc coating classes and with two strength grades, as described in Section .

1.2 The strand is furnished with Class A weight zinc-coated wires throughout. It can be furnished with Class B weight or Class C weight zinc-coated outer wires where additional corrosion protection is required.

1.3 The values stated in inch-pound units are to be regarded as the standard.