| The element composition of special metal | Data |
| C (%) | 0.02-0.18 |
| Si (%) | ≤0.35 |
| Mn (%) | ≤0.35 |
| P (%) | ≤0.015 |
| S (%) | ≤0.015 |
| Cr (%) | 17.0-21.0 |
| Mo (%) | 2.80-3.30 |
| Ni (%) | 50.0-55.0 |
| N (%) | |
| Cu (%) | ≤0.30 |
| Co (%) | ≤1.00 |
| Fe (%) | rest |
| Ti (%) | 0.60-1.20 |
| Al (%) | 0.30-0.70 |
| Nb (%) | 4.70-5.50 |
| V (%) | |
| B (%) | 0.002-0.006 |
| W (%) |
| Mechanical performance | Data |
| Hardness HB 30 ≤HB | |
| 0.2% Yield Strength Rp≥N/mm² | 1030 |
| Tensile strength Rm≥N/mm² | 1230 |
| Enlong A5>=% | 12 |
| Modulus of elasticity kN/mm² | 205 |
| reistant on air up to ℃ | |
| Density g/cm³ | 8.2 |
| Specific heat capacity J/kg K | 440 |
| Thermal conductivity W/m K | 13 |
| Electrical resistivity Ω mm²/m | 1.23 |
