Specification for nickel-iron-chromium-molybdenum-aluminium-titanium heat-resisting alloy billets, bars, forgings and parts (Ni/Co 43.5, Cr 16.5, Mo 3.3, Al 1.2, Ti 1.2, Fe remainder)
| Elements | Min.（≥） | Max.（≤） | Similar | Remarks |
|---|---|---|---|---|
| C | 0.04 | 0.08 | ||
| Si | - | 0.50 | ||
| Mn | - | 0.20 | ||
| P | - | - | ||
| S | - | 0.015 | ||
| Cr | 15.50 | 17.50 | ||
| Ni | 42.00 | 45.00 | ||
| Mo | 2.80 | 3.80 | ||
| Co | - | 2.00 | ||
| Ti | 1.10 | 1.30 | ||
| Fe | - | remaining | ||
| Al | 1.10 | 1.30 | ||
| Cu | - | 0.50 | ||
| B | - | 0.005 | ||
| Pb | - | 0.0015 | ||
| Bi | - | 0.0001 | ||
| Ag | - | 0.0005 | ||
| Zr | 0.01 | 0.04 |
Specification for nickel-iron-chromium-molybdenum-aluminium-titanium heat-resisting alloy billets, bars, forgings and parts (Ni/Co 43.5, Cr 16.5, Mo 3.3, Al 1.2, Ti 1.2, 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) |
|---|---|---|---|---|---|---|
| 938 (≥) | 454 (≥) | 42 | 24 | 22 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 124 |
| 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 |
|---|---|---|---|---|---|---|---|
| 743 (≥) | 834 (≥) | 22 | 42 | 12 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 241 | |
| Temp. °C/°F |
Creep strain limit (10000h) (Rp1,0) N/mm2 |
Creep rupture strength (10000h) (Rp1,0) N/mm2 |
|||||
| 872 | 814 | 279 |
We can customize the production of HR55 grade, contact us for the best solution.
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