Standard
Historical
Last Updated: Sep 12, 2019
Track Document
ASTM A640-97(2014)
Standard Specification for Zinc-Coated Steel Strand for Messenger Support of Figure 8 Cable
Standard Specification for Zinc-Coated Steel Strand for Messenger Support of Figure 8 Cable
A0640-97R14
ASTM|A0640-97R14|en-US
Standard Specification for Zinc-Coated Steel Strand for Messenger Support of Figure 8 Cable
Standard
A640 Standard Specification for Zinc-Coated Steel Strand for Messenger Support of Figure 8 Cable>
new
BOS Vol. 01.06 Committee A05
$
77.00
In stock
Abstract
This specification covers two sizes of extra-high-strength grade of concentric-lay steel wire strand, composed of seven, zinc-coated steel wires, specifically intended for use as the supporting messenger in Figure 8-type communication and electrical cables. Steel wires shall be manufactured by the open-hearth, basic-oxygen, or electric-furnace process. Materials shall adhere to specified mechanical and physical requirements such as breaking strength, elongation, ductility, nominal diameter, and coating weight and adherence. Zinc coatings shall be continuous and of reasonably uniform thickness, and wires shall be free from imperfections not consistent with good commercial practice.
Scope
1.1 This specification covers two sizes of extra-high-strength grade of concentric-lay steel wire strand, composed of seven, zinc-coated steel wires, specifically intended for use as the supporting messenger in Figure 8-type communication and electrical cables.
1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.