# 1.0511 (C40): equivalents

Quelle: <https://mvg-frankfurt.de/en/materials/comparison/1-0511>

> 1.0511 (C40) internationally: AISI 1038, S40C, 1038, Ck40, 070M40 and 9 further designations by country and standard.

AISI 1038 · S40C · 1038 · Ck40 · 070M40

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## Designations by country and standard

| Country / type | Standard | Designation |
|---|---|---|
| Europe | EN | 1.0511· C40 |
| Germany | DIN (old) | Ck40 |
| France | AFNOR | AF60C40 · AF60C45 · XC42HI |
| United Kingdom | BS | 070M40 · 080M40 · En8 |
| ISO | ISO | C40E4 |
| Japan | JIS | S40C |
| Czech Republic | ČSN | 12041 |
| USA | AISI | AISI 1038 · AISI 1040 |
| USA | SAE | 1038 · 1040 |

## Not unambiguous

- **080M40** also matches [1.1186](https://mvg-frankfurt.de/en/materials/comparison/1-1186).
- **1040** also matches [1.1186](https://mvg-frankfurt.de/en/materials/comparison/1-1186), [1.1189](https://mvg-frankfurt.de/en/materials/comparison/1-1189).
- **AISI 1040** also matches [1.1186](https://mvg-frankfurt.de/en/materials/comparison/1-1186), [1.1189](https://mvg-frankfurt.de/en/materials/comparison/1-1189).
- **C40E4** also matches [1.1186](https://mvg-frankfurt.de/en/materials/comparison/1-1186).
- **Ck40** also matches [1.1186](https://mvg-frankfurt.de/en/materials/comparison/1-1186).
- **S40C** also matches [1.1186](https://mvg-frankfurt.de/en/materials/comparison/1-1186).

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