Specification for nickel-chromium- iron-molybdenum-cobalt-tungsten heat-resisting alloy billets, bars, forgings and parts (nickel base, Cr 21.7, Fe 18.5, Mo 9, Co 1.5, W 0.6)
| Elements | Min.（≥） | Max.（≤） | Similar | Remarks |
|---|---|---|---|---|
| C | 0.05 | 0.15 | ||
| Si | - | 1.00 | ||
| Mn | - | 1.00 | ||
| P | - | 0.015 | ||
| S | - | 0.015 | ||
| Cr | 20.50 | 23.00 | ||
| Ni | - | remaining | ||
| Mo | 8.00 | 10.00 | ||
| Co | 0.50 | 2.50 | ||
| Ti | - | - | ||
| Fe | 17.00 | 20.00 | ||
| B | - | 0.010 | ||
| W | 0.20 | 1.00 | ||
| Pb | - | 0.0050 |
Specification for nickel-chromium- iron-molybdenum-cobalt-tungsten heat-resisting alloy billets, bars, forgings and parts (nickel base, Cr 21.7, Fe 18.5, Mo 9, Co 1.5, W 0.6)
| 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) |
|---|---|---|---|---|---|---|
| 316 (≥) | 655 (≥) | 23 | 13 | 32 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 343 |
| 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 |
|---|---|---|---|---|---|---|---|
| 184 (≥) | 278 (≥) | 42 | 21 | 21 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 321 | |
| Temp. °C/°F |
Creep strain limit (10000h) (Rp1,0) N/mm2 |
Creep rupture strength (10000h) (Rp1,0) N/mm2 |
|||||
| 996 | 268 | 938 |
We can customize the production of HR6 grade, contact us for the best solution.
–sales@specificsteel.com