Which alloy steels can be used to manufacture sealing rings for mechanical seals

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After heat treatment, alloy steel experiences an **increase in hardness and wear resistance; it is easier to process and manufacture, has lower costs, and can be used in certain applications. Common chromium steel materials include 3Cr13, 4Cr13, and 9Cr18; they have better corrosion resistance than carbon steel and are suitable for use in mildly corrosive environments. Sealing rings made from 1Cr18Ni9, 1Cr18Ni9Ti, and Cr18Ni12Mo2Ti also have good corrosion resistance, but they have low hardness and poor wear resistance. There are also sealing rings made from high-speed tool steels and bearing steels, such as W8Cr4V and GCr9. Victory Refinery used W18Cr4V to manufacture the rotating ring for the high-speed mechanical seal of its liquefied petroleum gas centrifugal compressors, which operated continuously for two years. The properties of certain alloy steels are shown in Table 9.