| Steel No. | Composition, Wt% | Type | |||||||
| C | Ti | V | Cr | Fe | Nb | W | Mo | MxCy | |
| HSS-1Nb | 8.66 | -- | 1.14 | 4.47 | 78.05 | -- | 4.5 | 3.18 | M2C |
| HSS-1Nb | 12.65 | -- | 8.7 | 6.4 | 22.97 | -- | 26.62 | 22.65 | MC |
| HSS-1Nb | 10.62 | -- | 4.03 | 5.5 | 49.75 | -- | 19.9 | 13.21 | M3C2 M2C + MC |
| HSS-2Nb | 11.22 | -- | 8.48 | 6.2 | 26.33 | -- | 30.6 | 16.94 | MC |
| HSS-2Nb | 17.5 | -- | 5.67 | 5.03 | 35.4 | -- | 20 | 16.23 | M3C4 |
| HSS-2Nb | 12.72 | -- | 1.85 | 4.44 | 67.3 | -- | 7.47 | 5.64 | M4C3 |
| HSS-2Nb | 11.68 | -- | 3.81 | 5.18 | 48.91 | -- | 14.55 | 11.39 | M2C + MC |
| HSS-2Nb | 23.85 | -- | 4.7 | 4.00 | 35.56 | -- | 17.8 | 12.66 | M2C |
| HSS-3Nb | 21.77 | 0.67 | 8.6 | 1.07 | 6.65 | 53.3 | 4.22 | 3.77 | NbC |