Udimet 720
Udimet 720 is a nickel base alloy, solid solution strengthened with tungsten and molybdenum and precipitation-hardened with titanium and aluminum. The alloy combines high strength with metallurgical stability as demonstrated by excellent impact strength retention after long exposures at elevated temperatures. Good oxidation and corrosion resistance combined with high strength make the alloy useful in gas turbine blade and disc applications.
Equivalent Grades
Trademark | GB | GOST | ASTM | UNS | DIN | W.Nr. | NF | BS | JIS | SS |
Udimet 720 | – | GH4720Li | Udimet 720 | – | NiCr18Co15TiMoAl | – | – | – | – | – |
Chemical Composition, %
Alloy | C | Si | Mn | P | S | Cr | Ni | Co | W | Mo | Al | Ti | Zr | B | Fe |
Udimet 720 | 0.01-0.02 | ≤0.20 | ≤0.15 | ≤0.015 | ≤0.015 | 15.5-16.5 | Bal | 14.0-15.5 | 1.0-1.5 | 2.75-3.25 | 2.25-2.75 | 4.75-5.25 | 0.025-0.050 | 0.01-0.02 | ≤0.05 |
Typical Physical and Mechanical Properties (RT, Solution Annealed + Aged)
Density, g/cm3 | Melting Point, ℃ | Tensile Strength, MPa | Yield Strength, MPa | ELongation, % | Hardness, HRB |
8.14 | 1194-1338 | 1620 | 1166 | 11 | / |
Available Products and Specifications
Rod, Bar, Wire and Forgings | – |
Plate, Sheet and Strip | – |
Pipe and Tube | – |
Welding Product | – |
Others | – |
Features
The alloy has high high temperature strength, fatigue resistance and creep resistance; It has good sulfur corrosion resistance, oxidation resistance and long-term structural stability
Applications
The alloy has been used to make aeroengine turbine disk and passed the test. It can also be used to make the integral turbine rotor of a new generation of strategic missiles and high thrust rocket engines, as well as the turbine disk of ground gas turbine working below 750 degrees for a long time. The alloy has been used to make aeroengine turbine disk and passed the test. It can also be used to make the integral turbine rotor of a new generation of strategic missiles and high thrust rocket engines, as well as the turbine disk of ground gas turbine working below 750 degrees for a long time.