Steel for exhaust valves
| Elements | Min.（≥） | Max.（≤） | Similar | Remarks |
|---|---|---|---|---|
| C | - | 0.05 | ||
| Si | - | 1.50 | ||
| Mn | - | 1.00 | ||
| P | - | - | ||
| S | - | - | ||
| Cr | - | 20.0 | ||
| Ni | - | remaining |
Steel for exhaust 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) |
|---|---|---|---|---|---|---|
| 166 (≥) | 317 (≥) | 21 | 42 | 43 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 422 |
| 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 |
|---|---|---|---|---|---|---|---|
| 759 (≥) | 379 (≥) | 41 | 43 | 32 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 221 | |
| Temp. °C/°F |
Creep strain limit (10000h) (Rp1,0) N/mm2 |
Creep rupture strength (10000h) (Rp1,0) N/mm2 |
|||||
| 849 | 272 | 774 |
We can customize the production of N07090 grade, contact us for the best solution.
–sales@specificsteel.com