S Alloy 25 Chemical Composition, Grades, Charts and PDF Online

S Alloy 25, the same as UNS R30605, is mainly a superalloy consisting of cobalt, chromium, and nickel as main alloying components, with molybdenum and tungsten as additives. It possesses excellent property of corrosion and oxidation resistance; which means it can be used nicely in high temperature jobs in aerospace, chemical processional and gas turbine engines. The chemical makeup of this Steel usually consists of 48% cobalt, 20% chromium, 15% nickel, 10% molybdenum, and 3% tungsten, with the remaining components constituting trace amounts. S Alloy25 has different grades of products that are used for specific performance levels. Extensive data tables, charts with PDF documents listed for its grades, properties, and applications are also available online to help engineers and material scientists in choosing the right alloy for their use.

S Alloy 25 Chemical Composition And Grade Table

S Alloy 25, commonly referred to as S25 or Alloy 25, is an alloy that stands out due to its excellent mechanical properties and good resistance to both corrosive chemicals and heat. It is which, like its metallic constituents nickel and chromium, on top of that contains molybdenum and iron, competes the best ones even outside the boundaries of its performance. Aero-, marine, and chemical industries demand alloy 25 owing to a mix of safety and performance qualities. Its chemical makeup always sticks to rigid rules for quality and performance in order to be uniformed with standard. Using a grade table is like pulling a thread that allows us to find the makeup of each segment and its respective properties.

S Alloy 25 Composition Table
Elements C Si Mn P S Cr Ni Co Fe W
Min (%) 0.05 - - - - 19 9 - - 14
Max (%) 0.15 0.4 2 0.02 0.015 21 11 Rest 3 16

Advantages and Disadvantages of S Alloy 25

    Advantages:

  • Corrosion Resistance: Exhibits excellent resistance to corrosion.

  • High Strength: Offers mechanical strength suitable for demanding applications.

  • Weldability: Can be welded using standard techniques.

  • Thermal Stability: Maintains properties at elevated temperatures.

    Disadvantages:

  • Cost: Generally more expensive compared to conventional alloys.

  • Machinability: Challenging to machine due to hardness.

  • Sensitivity to Environment: May require protective coatings in aggressive environments.

  • Limited Availability: Not as readily available as common alloys.

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