Steel for intake valves
| Elements | Min.（≥） | Max.（≤） | Similar | Remarks |
|---|---|---|---|---|
| C | 0.38 | 0.43 | ||
| Si | 0.15 | 0.30 | ||
| Mn | 0.70 | 0.90 | ||
| P | - | 0.04 | ||
| S | - | 0.04 | ||
| Cr | 0.35 | 0.65 | ||
| Ni | 1.10 | 1.40 |
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) |
|---|---|---|---|---|---|---|
| 528 (≥) | 325 (≥) | 44 | 41 | 42 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 441 |
| 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 |
|---|---|---|---|---|---|---|---|
| 314 (≥) | 127 (≥) | 31 | 33 | 43 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 431 | |
| Temp. °C/°F |
Creep strain limit (10000h) (Rp1,0) N/mm2 |
Creep rupture strength (10000h) (Rp1,0) N/mm2 |
|||||
| 577 | 119 | 448 |
We can customize the production of NV4(3140) grade, contact us for the best solution.
–sales@specificsteel.com