ХН77ТЮР (ЭИ437Б)
ХН77ТЮР (ЭИ437Б) is a Ni Cr Based precipitation hardening deformation superalloy. The service temperature of the alloy is below 750 ℃.
Equivalent Grades
| Trademark | GB | GOST | ASTM | UNS | DIN | W.Nr. | NF | BS | JIS | SS |
| – | – | ХН77ТЮР (ЭИ437Б) | – | – | – | – | – | – | – | – |
Chemical Composition, %
| Alloy | C | Si | Mn | P | S | Cr | Ni | Al | Ti | Fe |
| ХН77ТЮР | ≤0.07 | ≤0.6 | ≤0.4 | ≤0.015 | ≤0.007 | 19.0-22.0 | Bal | 0.6-1.0 | 2.4-2.8 | ≤1.0 |
Typical Physical and Mechanical Properties (RT, Solution Annealed)
| Density, g/cm3 | Melting Point, ℃ | Tensile Strength, MPa | Yield Strength, MPa | ELongation, % | Hardness, HRB |
| 8.21 | 1340-1365 | 1120 | 785 | 22 | / |
Available Products and Specifications
| Rod, Bar, Wire and Forgings | GOST 5632 |
| Plate, Sheet and Strip | – |
| Pipe and Tube | – |
| Welding Product | – |
| Others | – |
Features
The alloy below 750 ℃ has good comprehensive mechanical properties, high yield strength, good oxidation resistance, stable structure, uniform and fine grain size, and is easy to hot work.
Applications
The alloy is suitable for manufacturing bearing parts such as turbine disk and working blade of aeroengine with temperature below 750 ℃.
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