| Chemical compositions | S1 | S2 | S3 | S4 | S5 | SN | SC |
| C | 0.0004 | 0.0003 | 0.0045 | 0.0004 | 0.0002 | 0.0004 | 0.0030 |
| Ni | 0.1265 | 0.1045 | 0.1335 | 0.1250 | 0.1360 | 0.0007 | 0.0001 |
| Cr | 0.1025 | 0.1737 | 0.0205 | 0.0658 | 0.0575 | 0.1908 | 0.0004 |
| Mo | 0.0581 | 0.0477 | 0.0450 | 0.0319 | 0.0560 | 0.0241 | 0.0001 |
| Ti | 0.0106 | 0.0039 | 0.0060 | 0.0002 | 0.0047 | 0.0000 | 0.0000 |
| N | 0.0001 | 0.0001 | 0.0001 | 0.0001 | 0.0001 | 0.0045 | 0.0001 |
| Fe | Balance | Balance | Balance | Balance | Balance | Balance | Balance |