Iron-based superalloys are high-performance alloys composed primarily of iron and are designed to provide strength-to-weight performance under extreme conditions, high temperatures, and corrosive environments. This includes the addition of alloying elements such as nickel, chromium, molybdenum, and cobalt to give strength, oxidation resistance, and thermal stability.

Key Features:

• High Temperature Strength: Maintain certain mechanical properties, including tensile strength and creep resistance, when subjected to elevated temperatures, often exceeding 600°C.
• Corrosion and Oxidation Resistance: Alloying elements, including chromium and molybdenum, provide corrosion and oxidation resistance by forming protective oxide layers at elevated temperatures.
• Used in Critical Applications: Commonly found in applications including gas turbines, power plants, jet engines, and heat exchangers where high heat is present and associated structural integrity is crucial.

Iron-based superalloys are an economical substitute for expensive nickel-based superalloys while still exhibiting broad high-temperature benefits and are commonly incorporated in aerospace, automotive, energy, and petrochemical applications. They can be processed to improve fatigue resistance, creep strength, and thermal fatigue resistance by controlling the heat treatment and processing steps, which permits precise micro structuring. They are especially useful for balancing performance requirements against cost, which provides users with safety and reliability for critical components when severe mechanical and thermal loads occur.