Specification for aircraft material. Nickel-chromium-tungsten valve steel
| Elements | Min.（≥） | Max.（≤） | Similar | Remarks |
|---|---|---|---|---|
| C | 0.37 | 0.47 | ||
| Si | 1.00 | 2.00 | ||
| Mn | 0.50 | 1.00 | ||
| P | - | 0.035 | ||
| S | - | 0.025 | ||
| Cr | 13.00 | 15.00 | ||
| Ni | 13.00 | 15.00 | ||
| Mo | 0.40 | 0.60 | ||
| W | 2.20 | 3.00 |
Specification for aircraft material. Nickel-chromium-tungsten valve steel
| 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) |
|---|---|---|---|---|---|---|
| 224 (≥) | 223 (≥) | 32 | 32 | 44 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 442 |
| 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 |
|---|---|---|---|---|---|---|---|
| 981 (≥) | 988 (≥) | 31 | 44 | 33 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 442 | |
| Temp. °C/°F |
Creep strain limit (10000h) (Rp1,0) N/mm2 |
Creep rupture strength (10000h) (Rp1,0) N/mm2 |
|||||
| 696 | 623 | 898 |
We can customize the production of 2S.111 grade, contact us for the best solution.
–sales@specificsteel.com