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ASTM A335 P9 Alloy Steel Pipe

ASTM A335 P9 Alloy Steel Pipe Supplier

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    A335 P9, P9 Material Composition, A335 gr P9, SA335 P9, ASTM A335 Gr P9, ASTM A335 P9 Pipe, A335 P9 Chemical Composition, A335 P9 Heat Treatment, A335 P9 Equivalent, A335 P9 Chrome Moly Pipe

    The ASTM A335 P9 Alloy Steel Pipe is known for its high alloy content, making it superior to standard carbon pipes. This pipe features a chemical composition that includes 8-10% chromium, 0.25-1% silicon, and 0.90-1.10% molybdenum, along with smaller amounts of carbon, manganese, phosphorus, and sulfur. These elements contribute to its excellent corrosion and oxidation resistance, enabling it to perform well under extreme temperatures and pressures.

    The A335 P9 Alloy Steel Pipe is designed for various demanding applications, including those in oil and gas refining, petrochemical industries, and power generation. It is suitable for bending, flanging, and other forming operations, and adheres to international standards for strength and durability. This pipe can handle high-pressure and high-temperature environments, making it ideal for transporting corrosive gas and fluids without leaks or breakages.

    Manufactured to stringent standards, the ASTM A335 P9 Pipe comes in lengths up to 16,000 mm and diameters ranging from 19.05 mm to 114.3 mm. It is available in different shapes, including round, rectangular, and square, with wall thicknesses from 2 mm to 14 mm. The pipes can be customized according to specific requirements, and they are often cold-rolled after hot-rolling to enhance their properties.

    The P9 Alloy Steel Pipe is characterized by its high tensile strength and yield strength, with a minimum tensile strength of 415 MPa and a yield strength of 205 MPa. Its versatility and robustness make it a preferred choice for critical applications in various industries. If you need more information or have specific requirements for A335 P9 Alloy Steel Pipe, feel free to contact us. 

    A335 Alloy Steel Pipe P9 Material Specification

    Size 1/2 to 36 Inch NB
    Standard ASTM A335 P9, SA335 P9
    Schedules SCH 40, SCH 160, SCH 80, SCH XXS, SCH XS, All Schedules
    Material Thickness 3 To 12 mm
    Tolerance Cold drawn pipe: +/-0.1mm
    Cold rolled pipe: +/-0.05mm
    Type ERW / Seamless / Welded / Fabricated
    Craft Cold rolled and Cold drawn
    Length Standard Double & In Cut length also.
    pipe available in Form of Round, Rectangular, Square, Hydraulic
    End Beveled End, Plain End, Treaded

    Chemical Compositions of ASTM A335 P9 Pipes

    C, % Mn, % P, % S, % Si, % Cr, % Mo, %
    0.015 max 0.30-0.60 0.025 max 0.025 max 0.50 max 4.00-6.00 0.45-0.65

    ASTM A335 Alloy Steel P9 Pipe Mechanical Properties

    Tensile Strength, MPa Yield Strength, MPa Elongation, %
    415 min 205 min 30 min

    SA 335 Grade P9 Chrome Moly Pipe Equivalent Material

    ASTM ASME JIS G 3458 UNS BS DIN ISO
    A335 P9 SA335 P9 STPA 26 S50400 3604 P1 629-470 2604 II TS38

    -Sizes of Low Alloy ASTM A335 P9 Steel Pipe

    Outer Diameter * Thickness in MM Outer Diameter * Thickness in MM Outer Diameter * Thickness in MM
    38.1 * 3.2 57.0 * 4.9 76.2 * 4.0
    38.1 * 4.0 57.0 * 6.3 76.2 * 5.0
    38.1 * 6.3 57.0 * 7.9 76.2 * 6.3
    42.4 * 3.2 60.3 * 3.2 82.5 * 4.5
    42.4 * 4.0 60.3 * 3.6 88.9 * 3.2
    44.5 * 3.2 60.3 * 5.0 88.9 * 3.6
    44.5 * 6.3 63.5 * 3.2 88.9 * 4.0
    48.3 * 3.2 63.5 * 3.6 101.6 * 3.6
    48.3 * 3.6 63.5 * 4.0 101.6 * 4.5
    50.8 * 4.5 63.5 * 6.3 101.6 * 6.3
    51.0 * 3.2 63.5 * 7.9 114.3 * 3.6
    51.0 * 3.6 70.0 * 3.2 114.3 * 5.0
    51.0 * 6.3 70.0 * 3.6 139.7 * 4.0
    57.0 * 3.2 70.0 * 6.3 139.7 * 5.0
    57.0 * 3.6 76.2 * 3.6 139.7 * 6.3

    Heat Treatment Requirements of ASTM A335 P9 Pipes

     

    P5, P9, P11, and P22

     

     

    Grade

    Heat Treatment Type

    Normalizing Temperature Range F [C]

    Subcritical Annealing 
    or Tempering 
    Temperature Range F 
    [C]

    P5 (b,c)

    Full or Isothermal Anneal

     

     

    Normalize and Temper

    *****

    1250 [675]

     

    Subcritical Anneal (P5c only)

    *****

    1325 – 1375 [715 – 745]

    P9

    Full or Isothermal Anneal

     

     

    Normalize and Temper

    *****

    1250 [675]

    P11

    Full or Isothermal Anneal

     

     

    Normalize and Temper

    *****

    1200 [650]

    P22

    Full or Isothermal Anneal

     

     

    Normalize and Temper

    *****

    1250 [675]

    P91

    Normalize and Temper

    1900-1975 [1040 – 1080]

    1350-1470 [730 – 800]

     

    Quench and Temper

    1900-1975 [1040 – 1080]

    1350-1470 [730 – 800]

    Alloy Steel A335 P9 Boiler Pipe Weight Chart

    Size Nominal Pipe Size Pipe Outer Diameter Wall Thickness Pipe Inner Diameter Weight per Foot
    1/2 0.84 0.109 0.622 0.85
    0.147 0.546 1.09
    0.188 0.464 1.31
    0.294 0.252 1.72
    3/4 1.05 0.113 0.824 1.13
    0.154 0.742 1.48
    0.219 0.612 1.95
    0.308 0.434 2.44
    1 1.315 0.133 1.049 1.68
    0.179 0.957 2.17
    0.250 0.815 2.85
    0.358 0.599 3.66
    1 1/4 1.66 0.140 1.380 2.27
    0.191 1.278 3.00
    0.250 1.160 3.77
    0.382 0.896 5.22
    1 1/2 1.90 0.145 1.610 2.72
    0.200 1.500 3.63
    0.281 1.338 4.86
    0.400 1.100 6.41
    2 2.375 0.109 2.157 2.64
    0.154 2.067 3.66
    0.218 1.939 5.03
    0.250 1.875 5.68
    0.281 1.813 6.29
    0.344 1.687 7.47
    0.436 1.503 9.04
    2 1/2 2.875 0.120 2.635 3.53
    0.203 2.469 5.80
    0.216 2.443 6.14
    0.250 2.375 7.02
    0.276 2.323 7.67
    0.375 2.125 10.02
    0.552 1.771 13.71
    3 3.50 0.120 3.260 4.34
    0.156 3.188 5.58
    0.172 3.156 6.12
    0.188 3.124 6.66
    0.216 3.068 7.58
    0.250 3.000 8.69
    0.281 2.938 9.67
    0.300 2.900 10.26
    0.438 2.624 14.34
    0.600 2.300 18.6
    3 1/2 4.0 0.120 3.760 4.98
    0.226 3.548 9.12
    0.250 3.500 10.02
    0.281 3.438 11.17
    0.318 3.364 12.52
    0.636 2..728 22.87
    4 4.5 0.120 4.260 5.62
    0.156 4.188 7.24
    0.188 4.124 8.67
    0.203 4.094 9.32
    0.219 4.062 10.02
    0.237 4.026 10.80
    0.250 4.000 11.36
    0.281 3.938 12.67
    0.312 3.876 13.97
    0.337 3.826 15.00
    0.438 3.624 19.02
    0.531 3.438 22.53
    0.674 3.152 27.57
    5 5.563 0.188 5.187 10.80
    0.219 5.125 12.51
    0.258 5.047 14.63
    0.281 5.001 15.87
    0.312 4.939 17.51
    0.344 4.875 19.19
    0.375 4.813 20.80
    0.500 4.563 27.06
    0.625 4.313 32.99
    0.750 4.063 38.59
    6 6.625 0.109 6.407 7.59
    0.134 6.357 9.30
    0.156 6.313 10.79
    0.188 6.249 12.94
    0.203 6.219 13.94
    0.219 6.187 15.00
    0.250 6.125 17.04
    0.280 6.065 18.99
    0.312 6.001 21.06
    0.344 5.937 23.10
    0.375 5.875 25.05
    0.432 5.761 28.60
    0.500 5.625 32.74
    0.562 5.501 36.43
    0.625 5.375 40.09
    0.719 5.187 45.39
    0.864 4.897 53.21
    1.000 4.625 60.13
    1.125 4.375 66.14

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    FAQs

    ASTM A335 P9 is a seamless ferritic alloy steel pipe designed for high-temperature applications. It is commonly used to transport water, oil, and natural gas. The key components of P9 include chromium and molybdenum, which enhance its strength, heat resistance, and overall performance.
    A335 P91 is a ferritic alloy steel known for its high strength and creep resistance. It maintains its properties over time and is commonly referred to as 9 Cr 1 Mo steel or chrome moly pipe due to its chromium and molybdenum content.

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