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  • ASTM A789 UNS S31803 Stainless Steel Tube
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  • ASTM A789 UNS S31803 Stainless Steel Tube

     
     
    Standard Specification for Seamless and Welded Ferritic/Austenitic Stainless Steel Tubing for General Service
     
    This specification covers grades of nominal wall thickness, ASTM A789 UNS S31803 Stainless Steel Tube for services requiring general corrosion resistance, with particular emphasis on resistance to stress corrosion cracking. These steels are susceptible to embrittlement if used for prolonged periods at elevated temperatures.
     


     
    ASTM A789 UNS S31803 Stainless Steel Tube Quick Details
    Company Name: Beite steel pipe
    Country/Region: China
    Product Name:ASTM A789 UNS S31803 Stainless Steel Tube
    Manufacture:seamless or welded process,
    Outside Diameter:12.7mm——304.8mm
    Wall thickness:0.9mm——15.4mm
    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)
     
     
     
     
    Manufacture
    The tubes shall be made by the seamless or welded process with no filler metal added.


     
     
    Heat Treatment

    UNS
    Designation A
    Temperature Quench
    S31803 1870–2010°F 
    [1020–1100°C]
    Rapid cooling in air or water
     


     
    Chemical Composition
     
    UNS
    Designation 
    C Mn P S Si Ni Cr Mo N Cu Others
    S31803 0.030 max 2.00 max 0.030 max 0.020 max 1.00 max 4.5-6.5 21.0-23.0 2.5-3.5 0.08-0.20 ... ...



     
    Mechanical Properties
     
    UNS
    Designation A
    Tensile Strength, min, ksi [MPa] Yield Strength, min, ksi [MPa] Elongation in 2 in. or 50
    mm, min, % 
    Hardness, max
    Brinell  HRC
    S31803 90 [620]  65 [450]  25 290 30
     


     
    Mechanical Tests
    Tension Tests 
    Flaring Test (for Seamless Tubes)
    Flange Test (for Welded Tubes)
    Hardness Test
    Reverse Flattening Test – For welded tubes
    Hydrostatic or Nondestructive Electric Test


     
     
    Permissible Variations in Dimensions
     
     
    Group Size, Outside Diameter,
    in.[mm]
    Permissible Variations in Outside Diameter, in.[mm]
    Permissible
    Variations in Wall Thickness, A %
    Permissible Variations in Cut
    Length, in. B [mm]
     
    Thin Walled Tubes C
    Over Under
    1
    Up to1 ⁄ 2 [12.7], excl
    ±0.005 [0.13] ±15
     1⁄ 8[3]
    0 ....
    2
    1 ⁄ 2 to 1 1 ⁄ 2 [12.7 to 38.1], excl
    ±0.005 [0.13] ±10  1⁄ 8[3] 0 less than 0.065 in. [1.6 mm] nominal
    3 1 1 ⁄ 2 to 3 1 ⁄ 2 [38.1 to 88.9], excl ±0.010 [0.25] ±10  3⁄ 16[5] 0 Less than 0.095 in. [2.4 mm] nominal
    4 3 1 ⁄ 2 to 5 1 ⁄ 2 [88.9 to 139.7], excl ±0.015 [0.38] ±10  3⁄ 16[5] 0 Less than 0.150 in. [3.8 mm] nominal
    5 5 1 ⁄ 2 to 8 [139.7 to 203.2], incl ±0.030 [0.76] ±10  3⁄ 16[5] 0 Less than 0.150 in. [3.8 mm] nominal


     
     
    Surface Condition
    All tubes shall be free of excessive mill scale,suitable for inspection. A slight amount of oxidation will not be considered as scale. 
     
     
     
    Product Marking
    In addition to the marking prescribed in Specification A 1016/A 1016M, the marking indicate whether the tubing is seamless or welded.
     
     



     

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