Rene 77

Rene 77 is a nickel base precipitation hardening equiaxed grain casting superalloy with service temperature below 900 ℃.

Equivalent Grades

K477Rene 77

Chemical Composition, %

Rene 770.05-0.09≤0.2≤0.15≤0.015≤0.01514.0-15.25Bal14.0-16.03.9-4.54.0-4.63.0-3.70.012-0.02≤0.5

Typical Physical and Mechanical Properties (RT, Solution Annealed)

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

Available Products and Specifications

Rod, Bar, Wire and Forgings
Plate, Sheet and Strip
Pipe and Tube
Welding Product


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.


The alloy is suitable for making high-temperature parts such as gas turbine blades and turbine outer rings of aeroengines.