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Testing
Diameter and surface on every metre; tensile, composition and hardness per lot.
On every metre
| Property | Method | Resolution |
|---|---|---|
| Diameter | In-line laser micrometer | 0.001 mm |
| Surface | Eddy current plus visual | Full length |
Per lot
| Property | Method | Included | Where |
|---|---|---|---|
| Tensile and elongation | Per grade and temper | Standard | Certificate value |
| Composition | Melt analysis | Standard on 3.1 | Certificate value |
| Hardness | Per temper | On request | Report |
| Grain size | Metallographic | On request | Report |
Documents
- EN 10204 3.1 material certificate with heat number and measured values
- EN 10204 3.2 where a third party witnesses, arranged before packing
- Dimensional report for a named spool
- Hardness or grain-size report where the drawing calls for it