Specification for chromium-molybdenum-vanadium-niobium heat-resisting steel billets, bars, forgings and parts (930-1080 MPa) (Cr 10.5, Mo 0.6, V 0.2, Nb 0.3)
| Elements | Min.（≥） | Max.（≤） | Similar | Remarks |
|---|---|---|---|---|
| C | 0.08 | 0.16 | ||
| Si | 0.15 | 0.60 | ||
| Mn | 0.30 | 1.20 | ||
| P | - | 0.030 | ||
| S | - | 0.025 | ||
| Cr | 9.80 | 11.20 | ||
| Ni | 0.60 | 1.20 | ||
| Mo | 0.40 | 0.80 | ||
| Nb | 0.15 | 0.45 | ||
| V | 0.10 | 0.25 | ||
| N | 0.030 | 0.075 |
Specification for chromium-molybdenum-vanadium-niobium heat-resisting steel billets, bars, forgings and parts (930-1080 MPa) (Cr 10.5, Mo 0.6, 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) |
|---|---|---|---|---|---|---|
| 723 (≥) | 237 (≥) | 43 | 34 | 41 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 332 |
| 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 |
|---|---|---|---|---|---|---|---|
| 318 (≥) | 721 (≥) | 41 | 13 | 42 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 413 | |
| Temp. °C/°F |
Creep strain limit (10000h) (Rp1,0) N/mm2 |
Creep rupture strength (10000h) (Rp1,0) N/mm2 |
|||||
| 483 | 498 | 624 |
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