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A335 P9 alloy pipe

  • 产品描述
  • Alloy pipe is a type of seamless steel pipe, which is divided into seamless pipes for structural use and high-pressure heat-resistant alloy pipes. Mainly different from the production standards and industry of alloy pipes, annealing and tempering of alloy pipes can change their mechanical properties. Achieve the required processing conditions. Its performance is higher than that of ordinary seamless steel pipes in terms of versatile utilization value, and the chemical composition of alloy pipes contains more Cr, with high temperature resistance, low temperature resistance, and corrosion resistance. The common carbon seamless pipe does not contain alloy components or has very few alloy components. The reason why alloy pipes are widely used in industries such as petroleum, aerospace, chemical, electric power, boilers, and military is because their mechanical properties vary greatly and are easy to adjust.

    Calculation of Alloy Management Theory:

     

    (Outer diameter wall thickness) * Wall thickness * 0.02483=Weight per meter.

    Mechanical properties:

     

    Standard

    Brand

    Tensile strength(MPa)

    Yield strength(MPa)

    Elongation(%)

    Hardness

    GB3087

    10

    335~475

    ≥195

    ≥24

    /

    20

    410~550

    ≥245

    ≥20

    /

     

    GB5310

    20G

    410~550

    ≥245

    ≥24

    /

    20MnG

    ≥415

    ≥240

    ≥22

    /

     

    25MnG

    ≥485

    ≥275

    ≥20

    /

     

    15CrMoG

    440~640

    ≥235

    ≥21

    /

     

    12Cr2MoG

    450~600

    ≥280

    ≥20

    /

     

    12Cr1MoVG

    470~640

    ≥255

    ≥21

    /

     

     

    Chemical composition:

    Standard

    Brand

    Chemical composition(%)

                               

    C

    Si

    Mn

    P

    S

    Cr

    Mo

    Cu

    Ni

    V

    Al

    W

    Ti

    Nb

    N

       

    GB3087

    10

    0.07~0.13

    0.17~0.37

    0.38~0.65

    ≤0.030

    ≤0.030

    0.3~0.65

    /

    ≤0.25

    ≤0.30

    /

    /

           

    20

    0.17~0.23

    0.17~0.37

    0.38~0.65

    ≤0.030

    ≤0.030

    0.3~0.65

    /

    ≤0.25

    ≤0.30

    /

    /

             

    GB5310

    20G

    0.17~0.24

    0.17~0.37

    0.35~0.65

    ≤0.030

    ≤0.030

    ≤0.25

    ≤0.15

    ≤0.20

    ≤0.25

    ≤0.08

             

    20MnG

    0.17~0.24

    0.17~0.37

    0.70~1.00

    ≤0.030

    ≤0.030

    ≤0.25

    ≤0.15

    ≤0.20

    ≤0.25

    ≤0.08

               

    25MnG

    0.18~0.24

    0.17~0.37

    0.80~1.10

    ≤0.030

    ≤0.030

    ≤0.25

    ≤0.15

    ≤0.20

    ≤0.25

    ≤0.08

               

    15CrMo

    0.12~0.18

    0.17~0.37

    0.40~0.70

    ≤0.030

    ≤0.030

    0.80~1.10

    0.40~0.55

    ≤0.20

    ≤0.30