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Super Duplex Steel S32750 A995 5A 2507 Floating Ball Valve

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Super Duplex Steel S32750 A995 5A 2507 Floating Ball Valve

Floating ball valve made of super duplex stainless steel (S32750) processing. The material S32750 is a stainless steel material with excellent corrosion resistance and strength. It belongs to ferritic austenitic stainless steel, containing up to 25% chromium, 7% nickel, 4% molybdenum, and 0.25% nitrogen.

    ASTM A995 5A belongs to American standard duplex stainless steel castings, and the execution standard is ASTM A995/A995M-2019 ASTM A995 5A is a ferritic austenitic (duplex) stainless steel that combines the most beneficial properties of many ferritic and austenitic steels. Due to its high chromium and molybdenum content, the steel has excellent resistance to point corrosion, crevice corrosion, and uniform corrosion. The duplex microstructure ensures that the steel has high resistance to stress corrosion cracking and high mechanical strength


    - Size from 2” to 8” ( DN50mm to DN200mm).
    - Pressure ratings from Class 150LB to 600LB ( PN10 to PN100).
    - RF, RTJ or BW end.
    - PTFE, Nylon, etc.
    - The driving mode can be manual, electric, pneumatic, or equipped with an ISO platform.
    - Cast titanium material A995 5A(CE3MN), A995 6A(CD3MWCuN), etc.


    Design standards: GB/T12237, API6D, ASME B16.34
    Structural length: GB/T12221, API6D, ASME B16.10
    Connecting flanges: HG, GB, JB, API, ANSI, ISO, BS, DIN, NF, JIS
    Test standards: JB/T9092, GB/T13927, API6D, API598

    about super duplex steel & duplex steel

    The main differences between super duplex steel and duplex steel include the following aspects:

    Chemical composition:
    Super duplex steel contains more metallic elements such as copper (Cu) and nitrogen (N), which help improve the strength, toughness, and corrosion resistance of the material.

    Mechanical properties:
    Due to the addition of copper and nitrogen elements, the mechanical properties such as strength, toughness, and corrosion resistance of super duplex steel are superior to those of duplex steel.

    Corrosion resistance:
    Super duplex steel also exhibits excellent corrosion resistance, especially in fields such as chemical processing, marine environment, and food industry.

    Thermal stability:
    Super duplex steel exhibits superior performance at high temperatures, maintaining high strength and plasticity, which has important advantages in high-temperature processing and use.

    Softening and heat treatment characteristics:
    The softening mechanism of super duplex steel is localized weakening, which means that only some areas will soften, while other areas still maintain high strength.

    Main Components

    NO. Part Names Material
    1 Body A995 5A
    2 Seat Ring PTFE
    3 Ball A182 F53 (2507)
    4 Gasket 2507+graphite
    5 Bolt A193 B8M
    6 Nut A194 8M
    7 Bonnet A995 5A
    8 Stem A276 S32750
    9 Sealing Ring PTFE
    10 Ball A182 F53 (2507)
    11 Spring Inconel X 750
    12 Packing PTFE / Graphite
    13 Gland Bushing A276 S32750
    14 Gland Flange A351 CF8M


    Due to its excellent comprehensive performance, super duplex steel is mainly used in fields that require high strength, high plasticity, and high thermal stability, such as offshore platforms, oil and gas pipelines, chemical equipment, nuclear industry, high-speed trains, etc.