Steel for intake valves
| Elements | Min.（≥） | Max.（≤） | Similar | Remarks |
|---|---|---|---|---|
| C | 0.20 | 0.25 | ||
| Si | - | 0.50 | ||
| Mn | 0.50 | 1.00 | ||
| P | 0.040 | |||
| S | 0.025 | |||
| Cr | 11.0 | 12.5 | ||
| Ni | 0.50 | 1.00 | ||
| Mo | 0.90 | 1.25 | ||
| W | 0.90 | 1.25 |
Steel for intake valves
| 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) |
|---|---|---|---|---|---|---|
| 539 (≥) | 693 (≥) | 43 | 44 | 42 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 142 |
| 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 |
|---|---|---|---|---|---|---|---|
| 277 (≥) | 362 (≥) | 23 | 34 | 11 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 143 | |
| Temp. °C/°F |
Creep strain limit (10000h) (Rp1,0) N/mm2 |
Creep rupture strength (10000h) (Rp1,0) N/mm2 |
|||||
| 215 | 147 | 575 |
We can customize the production of HNV8 grade, contact us for the best solution.
–sales@specificsteel.com