# 1.6566 (17NiCrMo6-4): equivalents

Quelle: <https://mvg-frankfurt.de/en/materials/comparison/1-6566>

> 1.6566 (17NiCrMo6-4) internationally: 815M17, 18NCD6, 17NiCrMo6, 18NiCrMo5, SS2523 and 0 further designations by country and standard.

815M17 · 18NCD6 · 17NiCrMo6 · 18NiCrMo5 · SS2523

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## Designations by country and standard

| Country / type | Standard | Designation |
|---|---|---|
| Europe | EN | 1.6566· 17NiCrMo6-4 |
| France | AFNOR | 18NCD6 |
| United Kingdom | BS | 815M17 |
| ISO | ISO | 17NiCrMo6 |
| Italy | UNI | 18NiCrMo5 |
| Sweden | SIS | SS2523 |

## Not unambiguous

- **18NCD6** also matches [1.6587](https://mvg-frankfurt.de/en/materials/comparison/1-6587).

Equivalents are approximations: the composition and limits of the standards differ in part. For certificates, the ordered standard applies.