Incoloy Alloy 925 Chemical Composition, Grades, Charts and Pdf

Incoloy , commonly known as alloy 925, is a nickel-iron-chromium alloy with inclusions of molybdenum, copper, titanium, and aluminum. The chemical composition of its usual composition is nickel (42-46%), chromium (19.5-22.5%), iron (min of 22%), molybdenum (2.5-3.5%), copper (1.5-3%), titanium (0.10-1.90%), and aluminum (0.10-0) This alloy has an extraordinary corrosion resistance in numerous environments, including environments containing H2S gas, chloride and sulfuric acids. It is widely used in areas like downhole and surface equipment for gas and oil production, marine engineering, and chemical processing. Incoloy Alloy 925 grades are in accordance with the international standards, including the ASTM B805 and UNS N09925. Descriptive tables, charts and PDFs with all the necessary details on its characteristics and usage modes will always be accessible and applicable in various industries.

Incoloy Alloy 925 Chemical Composition And Grade Table

Incoloy Alloy 925 embodies a chemistry formula optimized for peak performance in aggressive environments. Consisting mainly of nickel, it also integrates large amounts of chromium, molybdenum, copper and titanium, which provide it with the ability to resist oxidation and stress corrosion cracking. Its high-strength corrosion resistance quality, stability at high temperatures and suitability for different industrial situations such as oil and gas extraction, sour gas service and marine applications should be noted. The following table displays the composition details for Incoloy Alloy 925 where only the percentages of the key components are given.

Incoloy Alloy 925 Composition Table
Elements Ni Fe Cr Mo Ti Cu Al C
Max (%) 44 28 21 3 2.1 1.8 0.3 0.1

Advantages and Disadvantages of Incoloy Alloy 925

    Advantages:

  • Corrosion Resistance: Withstands a variety of detrimental environments.

  • High Strength: Exhibits good mechanical properties suitable for high standards.

  • Thermal Stability: Retains mechanical properties at high temperatures.

  • Weldability: Facilitates easy welding and fabrication.

    Disadvantages:

  • Cost: Generally more expensive than other steel alloys.

  • Limited Availability: May not be available in all sizes and forms.

  • Sensitivity to Chloride Stress Corrosion Cracking: Needs protection from chloride environments.

  • Machinability: May be difficult to machine due to high tensile strength and hardness.

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