Chemical Composition and Mechal Properanicty
| % | C | Si | Mn | P | S | Cr | Ni | Co | Fe |
| Min | - | - | - | - | - | 14.0 |
| - | 6.0 |
| Max | 0.1 | 0.5 | 0.1 | 0.03 | 0.015 | 17.0 | - | 0.04 | 10.0 |
| Densityg/cm³ | Magnetic | Thermal conductivity/w/(m.k)100~900℃ | Resistivity℃)/（Ω.mm2/m) | Specific heat capacity℃)/J/(kg.k)℃ | Coefficient of expansion/(10-6/k)20~900℃ |
| 8.43 |
| - | 1.03 | 443 | - |
| 21 | 540 | 650 | 760 | 870 |
| 214 | 184 | 176 | 168 | 157 |