ASTM B173 is the standard specification for rope-lay-stranded copper conductors having concentric-stranded members, providing a clear technical basis for evaluating conductor construction and expected performance. It is relevant for buyers, engineers, and quality teams that need a reliable reference for copper conductors used in electrical applications. By defining the product in a structured way, this ASTM standard supports consistent procurement, comparison, and compliance review for conductor materials and construction.

What is ASTM B173?

ASTM B173 sets the specification framework for rope-lay-stranded copper conductors with concentric-stranded members. In practical terms, it identifies a conductor construction type and the requirements associated with that product form. The standard is used as a technical reference when verifying that a copper conductor matches the intended stranded design and meets applicable specification expectations. For purchasers and specification writers, ASTM B173 helps align ordering language, product description, and quality requirements for electrical conductor applications.

Where is ASTM B173 used?

This standard is typically used in electrical conductor procurement, manufacturing, inspection, and receiving quality control where rope-lay-stranded copper conductors are specified. It is most relevant when a project or product requires a copper conductor built with concentric-stranded members and documented to a recognized ASTM standard. ASTM B173 may be used by suppliers, distributors, utilities, and engineering teams that need a common reference point for ordering, verifying, or comparing conductor products.

Why is ASTM B173 important?

ASTM B173 matters because it supports consistency in how this specific copper conductor type is described and evaluated. A clear specification reduces ambiguity in procurement and helps limit the risk of receiving a conductor that does not match the intended construction. It also gives engineering and quality teams a dependable reference for product review, acceptance checks, and specification compliance. For standards-based purchasing, ASTM B173 improves clarity across the supply chain.

• Rope-lay-stranded copper conductor specification
• Concentric-stranded member construction
• Electrical conductor product reference
• Procurement and compliance support
• Quality control and acceptance review