Steel for intake valves
| Elements | Min.（≥） | Max.（≤） | Similar | Remarks |
|---|---|---|---|---|
| C | 0.75 | 0.85 | ||
| Si | 1.75 | 2.50 | ||
| Mn | - | 0.80 | ||
| P | 0.040 | |||
| S | 0.03 | |||
| Cr | 19.0 | 21.0 | ||
| Ni | 1.00 | 1.7 | ||
| Mo | 0.5 | - |
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) |
|---|---|---|---|---|---|---|
| 425 (≥) | 898 (≥) | 34 | 32 | 13 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 222 |
| 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 |
|---|---|---|---|---|---|---|---|
| 861 (≥) | 147 (≥) | 13 | 44 | 12 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 111 | |
| Temp. °C/°F |
Creep strain limit (10000h) (Rp1,0) N/mm2 |
Creep rupture strength (10000h) (Rp1,0) N/mm2 |
|||||
| 813 | 787 | 323 |
We can customize the production of HNV6 grade, contact us for the best solution.
–sales@specificsteel.com