GTD222
GTD222 is a nickel base precipitation hardening equiaxed grain cast superalloy with service temperature below 1000 ℃.
Equivalent Grades
| Trademark | GB | GOST | ASTM | UNS | DIN | W.Nr. | NF | BS | JIS | SS |
| – | K4222 | – | GTD222 | – | – | – | – | – | – | – |
Chemical Composition, %
| Alloy | C | Cr | Ni | Co | W | Al | Ti | Nb | B | Ta | Zr | Fe |
| GTD222 | 0.07-0.13 | 21.5-23.5 | Bal | 18.0-20.0 | 1.7-2.3 | 0.9-1.5 | 2.0-2.5 | 0.6-1.0 | 0.005-0.013 | 0.7-1.3 | 0.015-0.025 | – |
Typical Physical and Mechanical Properties (RT, Solution Annealed)
| Density, g/cm3 | Melting Point, ℃ | Tensile Strength, MPa | Yield Strength, MPa | ELongation, % | Hardness, HRB |
| 8.26 | – | 820 | – | 8 | / |
Available Products and Specifications
| Rod, Bar, Wire and Forgings | – |
| Plate, Sheet and Strip | – |
| Pipe and Tube | – |
| Welding Product | – |
| Others | – |
Features
The alloy has medium high temperature strength, good creep and fatigue resistance. The alloy has excellent oxidation resistance and corrosion resistance at high temperature, and has good casting and welding process properties.
Applications
The alloy is suitable for making guide vanes of gas turbines working below 1000 degrees and other stationary parts in long-term service.
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