Steel for intake valves
| Elements | Min.（≥） | Max.（≤） | Similar | Remarks |
|---|---|---|---|---|
| C | 0.42 | 0.49 | ||
| Si | 0.15 | 0.30 | ||
| Mn | 0.70 | 1.05 | ||
| P | - | 0.035 | ||
| S | - | 0.04 | ||
| Cr | 0.35 | 0.65 | ||
| Ni | 0.35 | 0.75 | ||
| Mo | 0.15 | 0.25 |
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) |
|---|---|---|---|---|---|---|
| 586 (≥) | 819 (≥) | 41 | 23 | 12 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 232 |
| 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 |
|---|---|---|---|---|---|---|---|
| 572 (≥) | 878 (≥) | 34 | 12 | 21 | 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 |
|||||
| 743 | 181 | 616 |
We can customize the production of NV5(8645) grade, contact us for the best solution.
–sales@specificsteel.com