Rene 77
Rene 77 is a nickel base precipitation hardening equiaxed grain casting superalloy with service temperature below 900 ℃.
Equivalent Grades
| Trademark | GB | GOST | ASTM | UNS | DIN | W.Nr. | NF | BS | JIS | SS |
| – | K477 | – | Rene 77 | – | – | – | – | – | – | – |
Chemical Composition, %
| Alloy | C | Si | Mn | P | S | Cr | Ni | Co | Mo | Al | Ti | B | Fe |
| Rene 77 | 0.05-0.09 | ≤0.2 | ≤0.15 | ≤0.015 | ≤0.015 | 14.0-15.25 | Bal | 14.0-16.0 | 3.9-4.5 | 4.0-4.6 | 3.0-3.7 | 0.012-0.02 | ≤0.5 |
Typical Physical and Mechanical Properties (RT, Solution Annealed)
| Density, g/cm3 | Melting Point, ℃ | Tensile Strength, MPa | Yield Strength, MPa | ELongation, % | Hardness, HRB |
| 7.95 | 1210-1290 | 900 | 710 | 11 | / |
Available Products and Specifications
| Rod, Bar, Wire and Forgings | – |
| Plate, Sheet and Strip | – |
| Pipe and Tube | – |
| Welding Product | – |
| Others | – |
Features
Chromium, cobalt, molybdenum, aluminum, titanium and niobium are added to the alloy for solid solution and precipitation strengthening, so that the alloy has better comprehensive properties. The alloy has high strength, plasticity, microstructure temperature and good casting properties.
Applications
The alloy is suitable for making high-temperature parts such as gas turbine blades and turbine outer rings of aeroengines.
