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Austenitic steel ASME SA312 · TP304L

Short Description:

Pipes of stainless steel 304 or its low-carbon version 304L may be made in accordance with ASME SA312 Grade TP304L, respectively. The TP304L pipes may be furnished in seamless or straight-beam (longitudinally) welded types. They are primarily intended for high-temperature and general corrosion service.


  • Pipe Grade: TP304L, AISI 304L, EN 1.4307, UNS S30403
  • Pipe Type: Seamless / Welded (EFW / ERW)
  • Pipe Form: Round Pipe, Cut-to-Length Pipe
  • Surface Finish: Annealed & Pickled (AP), Bright Annealed (BA), Polished
  • Standards (ASME/ASTM): ASME SA312, ASTM A312
  • Standards (EN): EN 10216-5,EN 10217-7
  • Product Detail

    Product Tags

    TP304L Stainless Steel Pipe, 1.4307 Stainless Steel Pipe

    Item Specification / Details
    Stainless Steel Pipe ASME SA312, ASTM A312
    Pipe Size (NPS) 1/8″ NB to 30″ NB (DN6 to DN750)
    Wall Thickness / Schedule SCH 5S, SCH 10S, SCH 40S, SCH 80S, SCH 160, XXS
    Type Seamless, Welded (WLD), Heavy Wall Welded (EFW)
    Form Round Pipe
    Length Single Random Length (SRL), Double Random Length (DRL), Cut Length
    End Plain End (PE), Beveled End (BE), Threaded End
    End Protection Plastic Caps
    Outside Finish AP (Annealed & Pickled), BA (Bright Annealed), Polished
    Delivery Condition Solution Annealed and Pickled
    Inspection, Test Reports Mill Test Certificates, EN 10204 3.1, Hydrostatic Test, Eddy Current Test, Radiographic Test (for Welded)
    Packing Packed in Wooden Boxes, Steel Strip Bundles, or as per Customers Requests
    Specials Custom wall thickness, non-standard diameters, and specialized testing available upon request

    TP 304L . UNS S30403 . 1.4307 Chemical Composition

    Chemical Composition (in % by mass)
    Grade C (Max.) Si (Max.) Mn (Max.) P (Max.) S (Max.) Cr Ni Mo Ti N Others
    304L 0.035 1.00 2.00 0.045 0.030 18.0 – 20.0 8.0 – 12.0
    1.4307 0.030 1.00 2.00 0.045 0.015 17.5 – 19.5 8.0 – 10.5 0.10

    TP 304L . UNS S30403 . 1.4307 Mechanical Property

    Mechanical Property & Heat Treatment
    Grade Rp 0.2 Mpa (Min.) Rp 1.0 Mpa (Min.) Rm Mpa (Min. – Max.) A (%) (Min.) Hardness (HRB) (Max.) Heat Treatment
    304L 170 485 35 90 Solution Annealed (Min. 1040°C)
    1.4307 200 240 500 – 700 45 Solution Annealed

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