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Inconel 738: Pushing the Boundaries of Heat Resistance and Creep Strength

Inconel 738 is a high-temperature alloy that belongs to the nickel-based high-temperature alloys. Below are detailed information about Inconel 738:

Specific grade: Inconel 738, also known as UNS N07738.

Specific Composition: The chemical composition of Inconel 738 mainly consists of the elements of nickel (Ni), chromium (Cr), molybdenum (Mo), titanium (Ti), aluminum (Al) and small amounts of iron (Fe). Its approximate composition is: nickel (50%), chromium (20%), iron (15%), molybdenum (about 5%), aluminum (about 4%), titanium (about 1%) and so on.

Production Standards: Production standards for Inconel 738 include AMS 5950 and AMS 5900, among others.

Forging: Inconel 738 can be molded and machined by hot forging process.

Heat Treatment: Heat treatment of Inconel 738 generally includes solution treatment and aging treatment to enhance the mechanical properties and heat resistance of the material.

Cold working: As Inconel 738 is a high-temperature alloy, its cold working performance is poor, and it usually needs to be processed at high temperatures.

Corrosion resistance: Inconel 738 has excellent resistance to high-temperature oxidation, corrosion and stress corrosion cracking, and has excellent corrosion resistance at high temperatures and in extreme environments.

Mechanical Properties: Inconel 738 has excellent high temperature strength, high temperature oxidation resistance and fatigue life. It maintains high Young’s modulus and tensile strength at high temperatures.

Properties: Inconel 738 has excellent high temperature stability, corrosion resistance, high strength and fatigue resistance.

Welding material grades: Welding materials suitable for Inconel 738 include ERNiCrMo-3 and ENiCrMo-3, etc.

Application areas: Inconel 738 is widely used in aerospace, gas turbines, ships, petrochemicals and other fields, especially in high temperature, high pressure and corrosive environments, such as turbine blades, combustion chamber components, nozzles, combustor parts and so on.


Post time: Aug-05-2023