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AISI 422 Martensitic Stainless Steel Chemical Composition, Grade, Table and Online Pdf

AISI 422, one of the martensitic stainless steels due to its remarkable strength and corrosion resistance, has been used widely in high-end industries. Its chemical constitution, like the one you see in this picture, often consists of elements, for example, chromium, molybdenum, carbon, manganese, phosphorus, and some sulfur as well as nickel, taking the steel's properties to a higher level. This grade has very high hardness, toughness, and a low wear on the other side. It also has a good machinability and polishability. This alloy is selected for what are called aerospace, automotive, and tooling industries, where the most specific features – such as strength, durability, etc. – are essential. Engineers, manufacturers, and users of this material depend on the comprehensively detailed properties tables, chart and PDF documents to acquire the material properties, mechanical properties, and suitability for the demanding environments in the best possible way. These documents ensure that the proper material choice is made and the optimum performance is obtained in harsh conditions.

AISI 422 Martensitic Stainless Steel Chemical Composition And Grade Table

AISI 422 is precisely a Martensitic Stainless Steel and considered a high-chromium alloy due to its superior corrosion resistance and strength properties. Its chemical composition largely incorporates 0.20% carbon, 12-14% chromium, 1% manganese, 1% silicon, 0.04% phosphorus, 0.03% sulfur, 0.50% of molybdenum, and traces of nickel and vanadium. The chemical formula for this grade is a good indication of its toughness, high hardness, and ability to resist both corrosion and oxidation which allows it to be used in applications such as turbine blades, steam valves and surgical instruments where both strength and corrosion resistance are required.

AISI 422 Martensitic Stainless Steel
Elements Fe Cr Mn Ni Mo W Si C V P S
Min (%) - 11.0 - 0.5 0.75 0.75 - 0.20 0.15 - -
Max (%) 82 13.0 1.00 1.0 1.25 1.75 1.75 0.25 0.3 0.025 0.025

Advantages and Disadvantages of AISI 422 Martensitic Stainless Steel

    Properties:

  • High Strength: Offers high tensile strength and hardness, suitable for applications requiring mechanical properties.

  • Heat Resistance: Maintains structural properties at high temperatures, suitable for high-temperature applications.

  • Corrosion Resistance: Provides good protection against corrosion in various conditions, including high temperature.

  • Wear Resistance: Exhibits high resistance to wear, suitable for parts prone to abrasive wear.

    Disadvantages:

  • Limited Weldability: Prone to cracking during welding, necessitating careful preheating and post-weld treatment.

  • Cost: Relatively expensive due to the presence of alloying elements.

  • Brittleness: Can be brittle at low temperatures, limiting its application in cryogenic environments.

  • Limited Availability: Not as readily available as other stainless steels, impacting procurement.

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Stainless Steel
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