Inconel Alloy 622 Chemical Composition, Grade, Charts and Document

Inconel Alloy 622 is a nickel-chromium-molybdenum alloy and it has an excellent resistance to the processes of corrosion to the wrath of the environment where there is presence of sulphuric acid, phosphoric acid, and mixed acid solutions. With the chemical composition mainly of nickel, chromium, molybdenum, and iron, this alloy demonstrates great strength and oxidation resistance even at the super-high temperatures. It is often employed in various sectors like chemical manufacture, aerospace, and nuclear power because of its extraordinary workability under severe conditions. Inconel Alloy 622 is available in different grades so that each grade is suitable for a particular application and any environmental conditions.The tables, charts and documents containing extensive information about its individual properties, types and applications are open and accessible to the engineers and manufacturers looking for the trustworthy materials to use.

Inconel Alloy 622 Chemical Composition And Grade Table

Inconel Alloy 622 nickel-chromium-molybdenum alloy belongs to high performance alloys with high corrosion and oxidation resistance at the temperatures higher than temperatures in the surrounding environment. Its chemical makeup contains approximately mostly nickel (58%), chrome (22%), molybdenum (9%), iron (3%), niobium (2.5%), cobalt (0.9%) and also rare manganese (0.4%), and traces of other elements like silicon, carbon, aluminum, titanium, sulfur, and phosphorus. This element adds to structural sturdiness and soundness, therefore being a perfect choice for hazardous applications like petrochemical processing, aerospace apparatus and nuclear reactors. Inconel Alloy 622, Grade 2 stainless steel, belongs to Grade 2 as defined by ASTM specifications.

Inconel Alloy 622 Composition Table
Elements C Mn Si Fe S P Cr Mo W Ni Cu Co V
Min (%) - - - 2 - - 2.0 12.5 2.5 - - - -
Max (%) 0.015 0.50 0.08 6 0.010 0.02 22.5 14.5 3.5 Balance 0.50 2.50 0.35

Advantages and Disadvantages of Inconel Alloy 622

    Advantages:

  • High-temperature strength: It maintains very high strength at high temperatures with temperature limit of up to 1200°C.

  • Resistance to carburization and oxidation: Excellent service where it offers an outstanding resistance to carburization and oxidation in high temperature conditions.

  • Good weldability: Documentation indicates that the material possesses a sound weldability hence can be welded using ordinary welding procedures.

  • Enhanced thermal stability: It can also undergo and sustain high temperatures so as to retain its mechanical properties for long time.

    Disadvantages:

  • Cost: Relatively expensive than some of the Nickel based alloy due to its composition and its properties it posses.

  • Limited availability: May not be produced or used as frequently as other nickel alloys, especially based on market demands.

  • Sensitivity to sulfur-containing atmospheres: Likely to undergo embrittlement in conditions characterized by exposure to sulfur at high temperatures.

  • Machinability: May be difficult to machine because of its high strength and propagation of work hardening behaviors.

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