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  • S22053

    1. Standard

    National Standard:GB/T 21833

    2. Chemical Composition

    Elementss
    C
    Mn
    P
    S
    Si
    Cr
    Mo
    Ni
    N
    Cu
    Min
     
     
     
     
     
    22.0
    3.0
    4.5
    0.14
     
    Max
    0.030
    2.0
    0.030
    0.020
    1.00
    23.0
    3.5
    6.5
    0.20
     
    Actual value
    0.025
    1.30
    0.023
    0.0001
    0.41
    22.8
    3.1
    5.0
    0.19
    0.20
     

    3. Mechanical Properties

    Mechanical Properties
    Tensile Strength
    MPa
    Yield Strength
    MPa
    Elongation
    %
    Hardness
    HBW/HRC
    Min
    655
    485
    25
     
    Max
     
     
     
    290/30
    Actual value
    788
    620
    38
    22.5

    4.  Typical Size

    Size
    Outside Diameter
    mm
    Permissible Variations
    in Outside Diameter
    mm
    Wall Thickness
    mm
    Average Wall Permissible Variations
    in Wall Thickness
    89×6
    89
    ±0.75
    6
    ±7.5%S
     
    Note:Standard requirements control range:OD:±0.75mm,WT:±7.5%S

    5. Typical Application Environment

         The duplex stainless steel seamless tube is mainly used in pressure vessel, pressure tanks, high pressure pipe, heat exchanger (chemical processing industry), oil and gas pipelines, heat exchanger pipes, sewage treatment system, pulp and paper industry classifier, bleaching equipment, storage processing system, high strength and corrosion resistance of rotating shaft, squeezing roller, blades, impeller, ship or cargo tank trucks, food processing equipment, the water environmental equipment, etc.
     

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