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Hastelloy Alloy X Chemical Composition & Properties, Grade, Charts and PDF Online

Hastelloy X Alloy is the nickel-chromium, iron, and molybdenum- alloy, which due to its high-temperature oxidation and corrosion resistance, is considered to be outstandingly corrosion-resistant. It is often composed of the elements nickel (47.5%), chromium (22%), iron (18.5%), molybdenum (9%) with lesser amounts of cobalt (1.5%) and manganese (0.6%). This composition enables it to give outstanding performance under tough conditions, for example, high-temperature gas turbines, industrial furnaces, and spacecraft. The grade X shows superb mechanical properties boasting high strength and creep resistance at elevated temperatures. Comprehensive tables, charts and comprehensive PDF files listing its properties, resistance to corrosion, and uses are available on our website as well, which makes it possible to choose and use it in different industries.

Hastelloy Alloy X Chemical Composition And Grade Table

Hastelloy Alloy X represents a high-temperature material which was designed specifically for resistance to oxidation at high temperatures, carbonizing, and also nitriding environments. The alloy's chemical composition mainly consists of nickel, chromium, and iron, but important additions of molybdenum and cobalt are present in large quantities as well. This combination provides it the unmatched power and stability, even in corrosive environments at high temperatures. Hastelloy Alloy X is available under different grades according to international standards for the sake of common acceptance in different industrial applications. Please, find in the following the data on chemical composition and applicable grades to use in complex engineering projects for an instant resort.

Hastelloy Alloy X Composition Table
Elements Cr Fe Mo Mn Si Ti Co Al Cu C P S W B Ni
Min (%) 20.5 17 8 - - - 0.5 - - 0.05 - - 0.2 - -
Max (%) 23 20 10 1 1 0.15 2.5 0.5 0.5 0.15 0.04 0.03 1 0.008 Rem

Advantages and Disadvantages of Hastelloy Alloy X

    Advantages:

  • High-Temperature Strength: Maintains very good strength and oxidation resistance at high temperatures.

  • Versatility: Developed for usage in diverse high-temperature conditions, such as gas turbine engines and industrial furnaces.

  • Good Fabricability: Can be easily molded and fashioned into various shapes, sizes, and forms.

  • Thermal Stability: Resistant to thermal fatigue and thermal shock, improving durability under high conditions.

    Disadvantages:

  • Limited Availability: Selection may be restricted depending on form or size due to limited stocks.

  • Cost: Generally more costly than conventional nickel alloys due to high chromium and nickel content.

  • Sensitivity to Sulfur: Corrosive to sulfur-containing environments, common in many facilities.

  • Machinability: Can be challenging to machine due to hardness, may require custom-fitted cutting tools.

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