Heat-treatable steels, alloy steels and free-cutting steels -- Part 15: Valve steels for internal combustion engines
| Elements | Min.（≥） | Max.（≤） | Similar | Remarks |
|---|---|---|---|---|
| C | 0.03 | 0.10 | ||
| Si | - | 0.50 | ||
| Mn | - | 0.50 | ||
| P | - | 0.015 | ||
| S | - | 0.015 | ||
| Cr | 14.00 | 17.00 | ||
| Mo | - | 0.15 | ||
| Ni | remaining | - | ||
| Al | 1.10 | 1.35 | ||
| Fe | 5.00 | 9.00 | ||
| Nb+Ta | 0.70 | 1.20 | ||
| Ti | 2.00 | 2.60 |
Heat-treatable steels, alloy steels and free-cutting steels -- Part 15: Valve steels for internal combustion engines
| 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) |
|---|---|---|---|---|---|---|
| 712 (≥) | 344 (≥) | 34 | 12 | 24 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 334 |
| 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 |
|---|---|---|---|---|---|---|---|
| 354 (≥) | 795 (≥) | 32 | 12 | 14 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 431 | |
| Temp. °C/°F |
Creep strain limit (10000h) (Rp1,0) N/mm2 |
Creep rupture strength (10000h) (Rp1,0) N/mm2 |
|||||
| 311 | 614 | 465 |
We can customize the production of NiCr15Fe7TiAl grade, contact us for the best solution.
–sales@specificsteel.com