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| U.S. | ASTM | 447 |
| European standard | EN | X2CrTiNb 18 |
| European standard | Number grade | 1.4509 |
| Element | minimum value | maximum value |
| C | – | 0.03 |
| Si | – | 1 |
| Mn | – | 1 |
| P | – | 0.04 |
| S | – | 0.015 |
| Cr | 17.5 | 18.5 |
| Ti | 0.1 | 0.6 |
| More | Nb: [3 x C + 0.30] ~ 1.00 |