Steel for exhaust valves
| Elements | Min.（≥） | Max.（≤） | Similar | Remarks |
|---|---|---|---|---|
| C | 0.03 | 0.10 | ||
| Si | - | 0.50 | ||
| Mn | - | 0.50 | ||
| P | - | 0.015 | ||
| S | - | 0.015 | ||
| Cr | 14.0 | 17.0 | ||
| Ni | - | remaining | ||
| Mo | - | 0.50 |
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) |
|---|---|---|---|---|---|---|
| 684 (≥) | 611 (≥) | 22 | 14 | 21 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 332 |
| 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 |
|---|---|---|---|---|---|---|---|
| 742 (≥) | 612 (≥) | 14 | 12 | 13 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 142 | |
| Temp. °C/°F |
Creep strain limit (10000h) (Rp1,0) N/mm2 |
Creep rupture strength (10000h) (Rp1,0) N/mm2 |
|||||
| 942 | 133 | 658 |
We can customize the production of N07751 grade, contact us for the best solution.
–sales@specificsteel.com