T: +44 (0)114 551 8170
E: ssas@bssa.org.uk
E: ssas@bssa.org.uk
As an alternative to scanning down the list try the ‘find’ facility on your keyboard, using the ‘Ctrl’ and ‘F’ keys together. Type in the term you are looking for in the dialog box that then appears.
The data given is not intended to replace that shown in individual standards to which reference should always be made.
| Designation | Chemical composition (% by mass – max unless stated) | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Steel name | Steel number | C | Si | Mn | P | S | Cr | Mo | Ni | Others |
| Martensitic steels | ||||||||||
| X45CrSi9-3 | 1.4718 | 0.40/0.50 | 2.70/3.30 | 0.60 | 0.040 | 0.030 | 8.00/10.00 | – | 0.50 | – |
| X40CrSiMo10-2 | 1.4731 | 0.35/0.45 | 2.00/3.00 | 0.80 | 0.040 | 0.030 | 9.50/11.50 | 0.80/1.30 | 0.50 | – |
| X85CrMoV18-2 | 1.4748 | 0.80/0.90 | 1.00 | 1.50 | 0.040 | 0.030 | 16.50/18.50 | 2.00/2.50 | – | V:0.30/0.60 |
| Austenitic steels | ||||||||||
| X55CrMnNiN20-8 | 1.4875 | 0.50/0.60 | 0.25 | 7.00/10.00 | 0.045 | 0.030 | 19.50/21.50 | – | 1.50/2.75 | N:0.20/0.40 |
| X53CrMnNiN21-9 | 1.4871 | 0.48/0.58 | 0.25 | 8.00/10.00 | 0.045 | 0.030 | 20.00/22.00 | – | 3.25/4.50 | N:0.35/0.50 |
| X50CrMnNiNbN21-9 | 1.4882 | 0.45/0.55 | 0.45 | 8.00/10.00 | 0.045 | 0.030 | 20.00/22.00 | – | 3.50/5.50 | W:0.80/1.50 Nb+Ta:1.80/2.50 N:0.40/0.60 |
| X53CrMnNiNbN21-9 | 1.4870 | 0.48/0.58 | 0.45 | 8.00/10.00 | 0.045 | 0.030 | 20.00/22.00 | – | 3.25/4.50 | Nb+Ta:2.00/3.00 N:0.40/0.60 C+N:0.90 min |
| X33CrNiMnN23-8 | 1.4866 | 0.28/0.38 | 0.50/1.00 | 1.50/3.50 | 0.045 | 0.030 | 22.00/24.00 | 0.50 | 7.00/9.000 | W:0.50 N:0.25/0.35 |