Engine poppet valve information report
| Elements | Min.（≥） | Max.（≤） | Similar | Remarks |
|---|---|---|---|---|
| C | 0.03 | 0.06 | ||
| Si | - | 0.20 | ||
| Mn | - | 0.20 | ||
| Cr | 22.00 | 23.00 | ||
| Ni | 55.00 | 58.00 | ||
| Mo | 1.70 | 2.30 | ||
| Co | - | - | ||
| W | - | - | ||
| Al | 1.00 | 1.70 | ||
| Cu | 0.60 | 1.20 | ||
| Ti | 2.10 | 2.60 | ||
| Fe | - | remaining | ||
| B | 0.003 | 0.007 | ||
| P | - | 0.015 | ||
| S | - | 0.015 |
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) |
|---|---|---|---|---|---|---|
| 125 (≥) | 197 (≥) | 13 | 44 | 12 | 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 |
|---|---|---|---|---|---|---|---|
| 931 (≥) | 562 (≥) | 32 | 33 | 41 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 233 | |
| Temp. °C/°F |
Creep strain limit (10000h) (Rp1,0) N/mm2 |
Creep rupture strength (10000h) (Rp1,0) N/mm2 |
|||||
| 714 | 517 | 681 |
We can customize the production of Pyromet 31 grade, contact us for the best solution.
–sales@specificsteel.com