Specification for chromium-cobalt-molybdenum-vanadium-niobium heat-resisting steel billets, bars, forgings and parts (consumable electrode remelted) (1000-1140 MPa) (Cr 10.5, Co 6, Mo 0.8, V 0.2, Nb 0.3)
| Elements | Min.（≥） | Max.（≤） | Similar | Remarks |
|---|---|---|---|---|
| C | 0.06 | 0.11 | ||
| Si | 0.10 | 0.70 | ||
| Mn | 0.60 | 1.10 | ||
| P | - | 0.028 | ||
| S | - | 0.020 | ||
| Cr | 9.20 | 11.20 | ||
| Ni | 0.20 | 0.80 | ||
| Mo | 0.50 | 1.00 | ||
| Nb | 0.20 | 0.45 | ||
| Co | 5.00 | 7.00 | ||
| V | 0.10 | 0.35 | ||
| N | 0.010 | 0.035 | ||
| B | 0.004 | 0.012 |
Specification for chromium-cobalt-molybdenum-vanadium-niobium heat-resisting steel billets, bars, forgings and parts (consumable electrode remelted) (1000-1140 MPa) (Cr 10.5, Co 6, Mo 0.8, V 0.2, Nb 0.3)
| Proof strength Rp0.2 (MPa) |
Tensile strength Rm (MPa) |
Impact energy KV (J) |
Elongation at fracture A (%) |
Reduction in cross section on fracture Z (%) |
As-Heat-Treated Condition | Brinell hardness (HBW) |
|---|---|---|---|---|---|---|
| 874 (≥) | 719 (≥) | 33 | 11 | 21 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 233 |
| Property | Density kg/dm3 |
Temperature T °C/F |
Specific heat J / kgK |
Thermal conductivity W/mK |
Electric resistance µΩ·cm |
Modulus of elasticity kN/mm2 |
Expansion rate |
|---|---|---|---|---|---|---|---|
| 531 (≥) | 382 (≥) | 13 | 33 | 34 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 132 | |
| Temp. °C/°F |
Creep strain limit (10000h) (Rp1,0) N/mm2 |
Creep rupture strength (10000h) (Rp1,0) N/mm2 |
|||||
| 865 | 615 | 529 |
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