Valve steels and alloys for internal combustion engines
| Elements | Min.（≥） | Max.（≤） | Similar | Remarks |
|---|---|---|---|---|
| C | 0.35 | 0.45 | ||
| Si | 2.00 | 3.00 | ||
| Mn | - | 0.80 | ||
| P | - | 0.040 | ||
| S | - | 0.030 | ||
| Cr | 9.50 | 11.50 | ||
| Ni | - | 0.50 | ||
| Mo | 0.80 | 1.30 |
Valve steels and alloys for internal combustion engines
| 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) |
|---|---|---|---|---|---|---|
| 615 (≥) | 383 (≥) | 41 | 22 | 34 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 144 |
| 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 |
|---|---|---|---|---|---|---|---|
| 139 (≥) | 279 (≥) | 31 | 43 | 42 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 231 | |
| Temp. °C/°F |
Creep strain limit (10000h) (Rp1,0) N/mm2 |
Creep rupture strength (10000h) (Rp1,0) N/mm2 |
|||||
| 476 | 677 | 814 |
We can customize the production of X40CrSiMo10-2 grade, contact us for the best solution.
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