Steel for exhaust valves
| Elements | Min.（≥） | Max.（≤） | Similar | Remarks |
|---|---|---|---|---|
| C | 0.35 | 0.50 | ||
| Si | 0.30 | 0.80 | ||
| Mn | - | 1.00 | ||
| P | - | 0.045 | ||
| S | - | 0.030 | ||
| Cr | 12.0 | 15.0 | ||
| Ni | 12.0 | 15.0 | ||
| Mo | 0.20 | 0.50 | ||
| W | 1.50 | 3.00 |
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) |
|---|---|---|---|---|---|---|
| 647 (≥) | 754 (≥) | 41 | 41 | 23 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 123 |
| 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 |
|---|---|---|---|---|---|---|---|
| 475 (≥) | 421 (≥) | 44 | 44 | 13 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 323 | |
| Temp. °C/°F |
Creep strain limit (10000h) (Rp1,0) N/mm2 |
Creep rupture strength (10000h) (Rp1,0) N/mm2 |
|||||
| 797 | 199 | 843 |
We can customize the production of EV9 grade, contact us for the best solution.
–sales@specificsteel.com