Engine poppet valve information report
| Elements | Min.（≥） | Max.（≤） | Similar | Remarks |
|---|---|---|---|---|
| C | - | 0.05 | ||
| Si | - | 0.20 | ||
| Mn | - | 0.50 | ||
| P | - | - | ||
| S | - | - | ||
| Ni | - | remaining | ||
| Cr | 15.00 | 17.00 | ||
| Al | 4.00 | 5.00 | ||
| Cu | - | - | ||
| Ti | - | 0.50 | ||
| Fe | 2.00 | 4.00 | ||
| N | - | - | ||
| Mo | - | 0.50 | ||
| B | - | 0.006 | ||
| Zr | - | 0.05 |
Engine poppet valve information report
| 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) |
|---|---|---|---|---|---|---|
| 839 (≥) | 864 (≥) | 41 | 34 | 33 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 434 |
| 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 |
|---|---|---|---|---|---|---|---|
| 529 (≥) | 641 (≥) | 33 | 11 | 32 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 131 | |
| Temp. °C/°F |
Creep strain limit (10000h) (Rp1,0) N/mm2 |
Creep rupture strength (10000h) (Rp1,0) N/mm2 |
|||||
| 763 | 327 | 446 |
We can customize the production of 21-4N grade, contact us for the best solution.
–sales@specificsteel.com