IN738

IN738 is a nickel base precipitation hardening equiaxed grain casting superalloy. It is one of the alloys with the best thermal corrosion resistance. The service temperature is less than 900 ℃. The alloy contains high chromium, tantalum and niobium.

Equivalent Grades

TrademarkGBGOSTASTMUNSDINW.Nr.NFBSJISSS
K438IN738

Chemical Composition, %

AlloyCSiMnPSCrNiCoWMoAlTiNbTaBZrFe
IN7380.1-0.2≤0.3≤0.2≤0.015≤0.01515.7-16.3Bal8.0-9.02.4-2.81.5-2.03.2-3.73.0-3.50.6-1.11.5-2.00.005-0.0150.05-0.15≤0.5

Typical Physical and Mechanical Properties (RT, Solution Annealed)

Density, g/cm3Melting Point, ℃Tensile Strength, MPaYield Strength, MPaELongation, %Hardness, HRB
8.161260-133010308808/

Available Products and Specifications

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

Features

The alloy has excellent thermal corrosion resistance, medium high temperature strength and good structural stability.

 Applications

Alloys have been widely used in long-life turbine blades and guide vanes of ships and ground industrial gas turbines, as well as turbine parts and corrosion-resistant parts of aeroengines.