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  • ASTM A209 Grade T1 Seamless Boiler Tubes
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    ASTM A209 Grade T1 Seamless Alloy-Steel Boiler and Superheater Tubes 
     
     
     
    Standard Specification for
    Seamless Carbon-Molybdenum Alloy-Steel Boiler and Superheater Tubes 
     
     
     
    ASTM A209 Grade T1 Steel Tubes  covers several grades of minimum-wall-thickness, seamless, carbon-molybdenum alloy-steel,boiler and superheater tubes.
     
    ASTM A209 Grade T1 Seamless BoilerTubes covers tubes 1 ⁄ 2 to 5 in. [12.7 to 127mm] inclusive, in outside diameter and 0.035 to 0.500 in. [0.9 to 12.7 mm], inclusive, in minimum wall thickness.
     
     

    ASTM A209 Grade T1 Seamless Boiler Tubes Quick Details
    Company Name: Beite steel pipe
    Country/Region: China
    Product Name:ASTM A209 Grade T1 Seamless Boiler Tubes
    Manufacture:seamless process,hot-finished or cold-finished
    Outside Diameter:12.7mm——127mm
    Wall thickness:0.9mm——12.7mm
    Length:6000mm、12000m or specified length as require
     
     
    Port of Shipment:Tianjin,China
    Payment:L/C or T/T
    Delivery: 7-15 days after payment
    Package: Bundles (hexagonal),Wooden Boxes,Crates (steel/wooden)



     
    Materials and Manufacture
    Steelmaking Practice—The steel shall be killed.
    The tubes are made by the seamless process and shall be either hot-finished or cold-finished, as specified.
     

     
    HeatTreatment
    Hot-finished tubes shall be heat treated at a temperature of 1200 °F [650 °C] or higher. 
    Cold-finished tubes, after the final cold finishing, be heat treated at a temperature of 1200 °F [650 °C] or higher, or tubing may be furnished in the full-annealed, isothermal annealed, or normalized and tempered condition. 
    If furnished in the normalized and tempered condition, the minimum tempering temperature shall be 1200 °F [650 °C]
     
     
     
    Chemical Composition

    Element Composition, %  
    Grade T1
    Carbon 0.10–0.20
    Manganese 0.30–0.80
    Phosphorus, max 0.025
    Sulfur, max 0.025
    Silicon 0.10–0.50
    Molybdenum 0.44–0.65
     

     
    Mechanical Properties

     Mechanical Properties Grade T1
    Tensile strength, min, ksi [MPa] 55 [380]
    Yield strength, min, ksi [MPa] 30 [205]
    Elongation in 2 in. or 50 mm, min, % 30
    Brinell Hardness Number (Tubes 0.200 in. [5.1 mm] and over in Wall Thickness), HBW 146
    Rockwell Hardness Number (Tubes less than 0.200 in. [5.1 mm] in Wall Thickness), HRB 80
     
     

     
    Forming Operations
    Tubes when inserted in the boiler shall stand expanding and beading without showing cracks or flaws.



    Tests
    Flattening Test—One flattening test shall be made on specimens from each end ofone finished tube, 
    Flaring Test—One flaring test shall be made on specimens from each end ofone finished tube
    Hardness Test—Brinell or Rockwell hardness tests shall be made on specimens from two tubes from each lot
    Tension Test—One tension test shall be made on a specimen for lots of not more than 50 tubes. Tension tests shall be made on specimens from two tubes for lots of more than 50 tubes 

     


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