Quick answer: a strand is a group of wires laid together; a wire rope is made from multiple strands laid around a core. In some industries “cable” is used broadly, so a purchase order should state the exact construction, diameter, grade and required breaking force instead of relying on the word cable alone.
Strand, Cable and Wire Rope Terminology
| Term |
Construction meaning |
What must be clarified |
| Wire |
Single metallic element |
Diameter, temper and surface condition |
| Strand |
Several wires helically laid together |
Wire count, lay and intended use |
| Wire rope |
Multiple strands laid around a core |
Construction such as 1×19, 7×7 or 7×19 |
| Cable |
A broad commercial term, not one fixed construction |
Whether the requirement is strand, rope or an assembled cable |
How Construction Changes Performance
Single-strand constructions such as 1×7 or 1×19 are relatively stable and are commonly considered for straight tension members, bracing and standing applications. They are not the first choice for repeated bending around small pulleys.
Multi-strand wire ropes such as 7×7 or 7×19 provide increasing flexibility. The correct choice depends on motion, bend radius, abrasion, fatigue life and the termination system—not simply on which construction contains more wires.
How to Specify Steel Strand or Wire Rope
- Define the function: standing support, control cable, running rope, guard, assembly or architectural tension member.
- State the construction: do not use “strand cable” as the only description.
- Specify material and diameter: include stainless grade and whether diameter refers to bare metal or a coated assembly.
- State strength requirements: minimum breaking force, working load and governing design factor.
- Define end fittings: termination type, assembly length and required efficiency.
Common Ordering Mistakes
- Calling every product “cable” without a construction
- Comparing only nominal diameter while ignoring metallic area
- Using rope breaking strength as the working load
- Ignoring the capacity of the termination or weakest fitting
- Substituting 304 and 316 without reviewing the environment
Review available stainless steel strand and wire rope constructions before issuing an RFQ.
Confirm the Correct Strand or Rope ConstructionSend the application, grade, construction, diameter, load, termination and quantity.Contact Us