Valve steels and alloys for internal combustion engines
| Elements | Min.（≥） | Max.（≤） | Similar | Remarks |
|---|---|---|---|---|
| C | 0.57 | 0.65 | ||
| Si | - | 0.25 | ||
| Mn | 9.50 | 11.50 | ||
| P | - | 0.040 | ||
| S | - | 0.030 | ||
| Cr | 20.00 | 22.00 | ||
| Ni | - | 1.50 | ||
| Mo | 0.75 | 1.25 | ||
| Nb | 1.00 | 1.20 | ||
| V | 0.75 | 1.00 | ||
| N | 0.40 | 0.60 |
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) |
|---|---|---|---|---|---|---|
| 383 (≥) | 849 (≥) | 31 | 12 | 12 | 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 |
|---|---|---|---|---|---|---|---|
| 386 (≥) | 533 (≥) | 32 | 31 | 14 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 232 | |
| Temp. °C/°F |
Creep strain limit (10000h) (Rp1,0) N/mm2 |
Creep rupture strength (10000h) (Rp1,0) N/mm2 |
|||||
| 586 | 565 | 547 |
We can customize the production of Z60CMDVNb21-10Az grade, contact us for the best solution.
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