Specification for heat-resisting alloy plate, sheet and strip (Ni 25.5, Cr 14.7, Ti 1.8, Mn 1.5, Mo 1.2, V 0.3, Fe remainder)
| Elements | Min.（≥） | Max.（≤） | Similar | Remarks |
|---|---|---|---|---|
| C | - | 0.06 | ||
| Si | - | 0.50 | ||
| Mn | - | 2.00 | ||
| P | - | 0.020 | ||
| S | - | 0.015 | ||
| Cr | 13.50 | 16.00 | ||
| Ni | 24.00 | 27.00 | ||
| Mo | 1.00 | 1.50 | ||
| Co | - | - | ||
| Ti | 1.70 | 2.00 | ||
| Fe | - | remaining | ||
| Al | - | 0.35 | ||
| V | 1.70 | 2.00 | ||
| B | 0.003 | 0.010 | ||
| Pb | - | 0.005 |
Specification for heat-resisting alloy plate, sheet and strip (Ni 25.5, Cr 14.7, Ti 1.8, Mn 1.5, Mo 1.2, V 0.3, Fe remainder)
| 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) |
|---|---|---|---|---|---|---|
| 117 (≥) | 243 (≥) | 11 | 31 | 34 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 423 |
| 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 |
|---|---|---|---|---|---|---|---|
| 482 (≥) | 159 (≥) | 41 | 31 | 12 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 231 | |
| Temp. °C/°F |
Creep strain limit (10000h) (Rp1,0) N/mm2 |
Creep rupture strength (10000h) (Rp1,0) N/mm2 |
|||||
| 755 | 527 | 138 |
We can customize the production of HR251 grade, contact us for the best solution.
–sales@specificsteel.com