Treat condition as a separate field
A procurement description should identify grade, diameter, material condition and required tensile strength and elongation. Request data for that combination rather than assuming the same values at every diameter.
Do not infer a thicker copper layer from an annealed designation. Copper geometry and interface requirements need their own specification and inspection basis.
Compare what the project measures
| Property | Comparison basis |
|---|---|
| Mechanical | Tensile strength, elongation, relevant breaking load and test method |
| Electrical | Resistance at the same temperature and dimensions |
| Processing | Drawing, stranding, forming and joining requirements |
| Installation | Handling, connections and applicable customer tests |
Qualify the finished product
Choose the material condition around the actual manufacturing or installation task. Agree on samples and acceptance criteria for the finished wire or conductor.
A softer or harder designation alone does not establish fatigue life, ampacity, connector approval or suitability for a railway installation.
This guide supports initial specification review. Confirm current product data, availability and application acceptance for the exact conductor under consideration.