Steel for intake valves
| Elements | Min.（≥） | Max.（≤） | Similar | Remarks |
|---|---|---|---|---|
| C | 0.40 | 0.50 | ||
| Si | 2.75 | 3.75 | ||
| Mn | - | 0.80 | ||
| P | 0.040 | |||
| S | 0.03 | |||
| Cr | 7.50 | 9.50 | ||
| Ni | - | 0.50 |
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) |
|---|---|---|---|---|---|---|
| 952 (≥) | 792 (≥) | 12 | 44 | 21 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 424 |
| 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 |
|---|---|---|---|---|---|---|---|
| 618 (≥) | 499 (≥) | 33 | 34 | 13 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 444 | |
| Temp. °C/°F |
Creep strain limit (10000h) (Rp1,0) N/mm2 |
Creep rupture strength (10000h) (Rp1,0) N/mm2 |
|||||
| 356 | 563 | 113 |
We can customize the production of HNV3 grade, contact us for the best solution.
–sales@specificsteel.com