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

TrademarkGBGOSTASTMUNSDINW.Nr.NFBSJISSS
Udimet 720GH4720LiUdimet 720NiCr18Co15TiMoAl

Chemical Composition, %

AlloyCSiMnPSCrNiCoWMoAlTiZrBFe
Udimet 7200.01-0.02≤0.20≤0.15≤0.015≤0.01515.5-16.5Bal14.0-15.51.0-1.52.75-3.252.25-2.754.75-5.250.025-0.0500.01-0.02≤0.05

Typical Physical and Mechanical Properties (RT, Solution Annealed + Aged)

Density, g/cm3Melting Point, ℃Tensile Strength, MPaYield Strength, MPaELongation, %Hardness, HRB
8.141194-13381620116611/

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.