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General Service Seamless Martensitic Ferritic Stainless Steel Tube ASME SA268

Categories Ferritic Stainless Steel
Brand Name: HENGLONG
Certification: ISO9001, ISO18001, ISO14001, PED97/23/EC
Place of Origin: China
Supply Ability: 6000 metric tons per ton
Delivery Time: 20-30 days
Packaging Details: Wooden case
Payment Terms: L/C, T/T
Material: martensitic stainless steel
type: seamless steel tube
process: cold drawn
tube shape: round
application: general service, heat exchanger
Price: Negoniation
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    General Service Seamless Martensitic Ferritic Stainless Steel Tube ASME SA268

    ASME SA268 Seamless ferritic and martensitic stainless steel tubes


    Standard: ASTM A268 / ASME SA268

    Steel grade: ferritic stainless steels and martensitic stainless steels

    A 450/A 450M Specification for General Requirements for seamless ferritic alloy tubing

    A 480/A 480M Specification for General Requirements for flat-rolled stainless steel plate, sheet, and strip (for welded tubing)

    E 213 practice for ultrasonic examination of longitudinal welded tubing

    E 273 practice for ultrasonic examination of longitudinal welded tubing

    S43000S44400TP446-1TP446-2S44660S44735S41000
    C, max, %0.120.0250.200.200.030.030.15
    Mn, max, %1.001.001.501.501.001.001.00
    P, max, %0.040.040.040.040.040.040.04
    S, max, %0.030.030.030.030.030.030.03
    Si, max, %1.001.001.001.001.001.001.00
    Ni, %-1.00 max0.75 max0.50 max1.0-3.51.00 max-
    Cr, %11.5-16.017.5-19.523.0-27.023.0-27.025.0-28.028.0-30.011.5-13.5
    Mo, %-1.75-2.50--3.0-4.03.6-4.2-
    Cu, %--0.0250.025---
    N, %-0.035--0.040.045-
    Ti, %-0.8 max--

    Ti + Cb

    0.2-1.0

    Ti + Cb

    0.2-1.0

    -

    Process: cold drawn for seamless tubing; Welded process with no filler metal added for welded tubing

    The tubes cover nominal wall thickness.

    Application: Tubing for general corrosion-resisting and high temperature service.


    Dimensional range:

    OD: 19.05-76.2mm

    Length: Up to 24m

    Any specific size is to be discussed before offer


    The tube be 100% eddy current tested

    Ultrasonic test is as option

    Straightness ≤1mm/1000mm

    Roughness: Ra ≤0.8


    Mechanical properties

    S43000S44400TP446-1TP446-2S44660S44735S41000

    Tensile strength

    min, Mpa

    485415485450585515410

    Yield strength

    min, MPa

    275275275275450415215

    Elongation in 50mm

    min, %

    20202020201820

    Hardness

    S43000S44400TP446-1TP446-2S44660S44735S41000
    Brinell, max207217207207265207
    Rockwell, B scale, max959595955810095

    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.
    • Flaring test (for seamless tubes) shall be made on specimens from one end of one tube from each lot of finished tubes. The minimum expansion of the inside diameter shall be 10%.
    • One test shall be made on specimens from one end of one tube from each lot of finished tubes. The flattening test may be performed instead of the flange test unless the flange test is specified in the purchase order.
    • Each welded tube shall be subjected to either the hydrostatic or nondestructive electric test. The client may specify which test is to be used. Each seamless tube shall be subjected to the hydrostatic test, or, instead of this test, a nondestructive electric test may be used when specified by the client.

    Surface quality

    All tubes shall be free of excessive mill scale, suitable for inspection. A slight amount of oxidation will not be considered as scale. Any special finish requirements shall be subject to agreement between the manufacturer and the clients.


    Tubes shall be delivered with square cut ends. The ends are free of excessive burrs.

    The tubes are bundled in the waterproof plastic sheet and packed in the wooden cases

    The case is most suitable for hanging by forklift.

    EN10204-3.1 MTC shall be issued

    EN10204-3.2 MTC is as option



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