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P91 Material High Pressure Boiler Tube , Alloy Steel Pipe ASTM A335 Standard

    Buy cheap P91 Material High Pressure Boiler Tube , Alloy Steel Pipe ASTM A335 Standard from wholesalers
     
    Buy cheap P91 Material High Pressure Boiler Tube , Alloy Steel Pipe ASTM A335 Standard from wholesalers
    • Buy cheap P91 Material High Pressure Boiler Tube , Alloy Steel Pipe ASTM A335 Standard from wholesalers
    • Buy cheap P91 Material High Pressure Boiler Tube , Alloy Steel Pipe ASTM A335 Standard from wholesalers

    P91 Material High Pressure Boiler Tube , Alloy Steel Pipe ASTM A335 Standard

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    Brand Name : NEW FORCE
    Model Number : 48''
    Certification : MTC
    Payment Terms : L/C, T/T
    Supply Ability : 200000 tons per month
    Delivery Time : 5~10 weeks
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    P91 Material High Pressure Boiler Tube , Alloy Steel Pipe ASTM A335 Standard

    P91 Material High Pressure Boiler Tube , Alloy Steel Pipe ASTM A335 Standard


    Grade 91 contains 9 % Chromium and 1 % Molybdenum compared to 2.5 % Chromium in the next best P22 grade. Chromium improves high temperature strength and increases oxidation resistance. Molybdenum increases the creep resistance. Also present are smaller quantities of Nickel and Manganese which increase the hardenability of the steel.

    More important than the alloying elements is the formation of this alloy steel. The steel is formed by normalizing at 1050 °C, air cooling down to 200 °C. It is then tempered by heating to 760 °C. The temperatures and the cooling rates are very important. This produces the microstructure that results in the high creep strength properties.

    1. Standards

    ASTM A335 ——Standard Specification for Seamless Ferritic Alloy-Steel Pipe for High-Temperature Service


    2. Application

    For the high-pressure boiler and steam pipes, and the petrochemical industry pipes;
    Power plant; Chemical Fertilizer; Petrochemicals; Offshore Oils; Gas Productions; Refineries and etc.


    3. Dimensional Tolerance

    Pipe typesOD (mm)ToleranceWT (mm)Tolerance
    High Pressure Boiler Tube219~457±1.0%≤20-10% ~ +12.5%
    20~40-10% +10%
    457~1422±0.9%>40~70-7%, +9%
    >70~20-6%, +8%

    4. Chemical Composition:

    GradeUNS DesignationComposition, %
    CMnPSSiCrMoNiVOthers
    P91K915600.08-0.120.30-0.600.020.010.20-0.508.00-9.500.85-1.050.40.18-0.25N 0.030-0.070
    Al 0.02max
    Cb 0.06-0.10
    Ti 0.01 max
    Zr 0.01max

    6. Mechanical Properties

    Steel pipes No.Tensile strengthYield strengthElongationImpact energyHardness
    (Mpa)(Mpa)(%)(J)
    P91585~760≥415≥20≥35≤250HB

    7. Available Size Range:

    ODThickness
    mminchmmSCH
    88.9~14223''~ 56''2.11~140≥SCH10
    *If the steel grades and size you are looking for are not listed above, please contact us for further information.

    MTC sample could be provided upon request.


    For additional requirements on chemical composition, mechanical properties, and supplementary requirements, please contact us for customization!

    Product Tags:

    seamless steel tube

      

    seamless tube pipe

      
    Quality P91 Material High Pressure Boiler Tube , Alloy Steel Pipe ASTM A335 Standard for sale
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