# 1.0503 (C45): equivalents

Quelle: <https://mvg-frankfurt.de/en/materials/comparison/1-0503>

> 1.0503 (C45) internationally: AISI 1042, S45C, 1042, 070M46, AF65C45 and 9 further designations by country and standard.

AISI 1042 · S45C · 1042 · 070M46 · AF65C45

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## Designations by country and standard

| Country / type | Standard | Designation |
|---|---|---|
| Europe | EN | 1.0503· C45 |
| France | AFNOR | AF65C45 |
| United Kingdom | BS | 070M46 · 50HS |
| Italy | UNI | 1C45 |
| Japan | JIS | S45C |
| Sweden | SIS | 1650 |
| Spain | UNE | C45k |
| Czech Republic | ČSN | 12050 |
| USA | AISI | AISI 1042 · AISI 1045 |
| USA | SAE | 1042 · 1045 |
| USA | USA (grade) | Gr.1043 |
| Austria | ÖNORM | C45SW |

## Not unambiguous

- **1045** also matches [1.1191](https://mvg-frankfurt.de/en/materials/comparison/1-1191), [1.1201](https://mvg-frankfurt.de/en/materials/comparison/1-1201).
- **1650** also matches [1.0580](https://mvg-frankfurt.de/en/materials/comparison/1-0580).
- **AISI 1045** also matches [1.1191](https://mvg-frankfurt.de/en/materials/comparison/1-1191), [1.1201](https://mvg-frankfurt.de/en/materials/comparison/1-1201).
- **C45k** also matches [1.1191](https://mvg-frankfurt.de/en/materials/comparison/1-1191), [1.1206](https://mvg-frankfurt.de/en/materials/comparison/1-1206).
- **S45C** also matches [1.1191](https://mvg-frankfurt.de/en/materials/comparison/1-1191).

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