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Home> Products> Stainless Steel Pipe> Stainless Steel Seamless Pipe> Stainless Steel Pipe ASTM A312 TP347H 6" SCH40

Stainless Steel Pipe ASTM A312 TP347H 6" SCH40

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    Product Attributes Supply Ability & Additional Information
    Product Attributes

    Model No.Stainless Steel Seamlee Pipe

    BrandYUHONG

    TypeSeamless

    CertificationCE

    ApplicationGas Pipe

    Section ShapeRound

    UsageMining

    TechniqueCold Drawn

    MaterialStainless Steel

    Product Description


    Stainless Steel Seamless Pipe ASTM A312 TP347/347H , A213 TP347H, A269 TP347H, Pickled and Annealed, Plain/Beveled End, 6" SCH40


    347 Stainless Steel Pipes and Tubes
    347 Stainless Steel is variant of the basic austenitic 18/8 Grade 304 with added Columbium - the introduction of Columbium stabilizes the steel and eliminates carbide precipitation which subsequently causes intergranular corrosion.
    The steel has excellent forming and welding qualities and excellent toughness even at cryogenic temperatures.

    Benefits of 347 Stainless Steel

    • Higher creep stress and rupture properties when compared with 304
    • Ideal for high temperature service
    • Overcomes sensitization and intergranular corrosion concerns
    • Can be used in elevated temperature applications for ASME Boiler and Pressure Vessel Code applications
    • Due to stabilisation the material offers better overall corrosion resistance when compared to 304/304L
    • Excellent mechanical properties
    • A high carbon version (347H) is also available


    Typical Uses

    • Heat exchangers
    • High temperature steam service
    • High temperature chemical process

    Both 347/347H are used primarily in elevated temperature applications.

    ASTM A312 TP347H Stainless Steel Seamless Pipe


    Product Range
    Specifications: ASTM A/ASME SA213/A249/A269/A312/A358 CL. I to V ASTM A789/A790
    Sizes (Seamless): 1/2" NB - 24" NB
    Sizes (ERW): 1/2" NB - 24" NB
    Sizes (EFW): 6" NB - 100" NB
    Wall Thickness available:
    Schedule 5S - Schedule XXS (heavier on request)
    Other Materials Testing:
    NACE MR0175, H2 SERVICE, OXYGEN SERVICE, CRYO SERVICE, etc.


    Dimensions:
    All Pipes is manufactured and inspected/tested to the relevant standards including ASTM, ASME and API etc.
    General Properties of 347 Stainless Steel Pipes and Tubes
    Alloys 321 (S32100) and 347 (S34700) are stabilized stainless steels which offer as their main advantage an excellent resistance to intergranular corrosion following exposure to temperatures in the chromium carbide precipitation range from 800 to 15000F (427 to 8160C). Alloy 321 is stabilized against chromium carbide formation by the addition of titanium. Alloy 347 is stabilized by the addition of columbium and tantalum.
    While Alloys 321 and 347 continue to be employed for prolonged service in the 800 to 15000F (427 to 8160C) temperature range, Alloy 304L has supplanted these stabilized grades for applications involving only welding or short time heating.
    Alloys 321 and 347 stainless steels are also advantageous for high temperature service because of their good mechanical properties. Alloys 321 and 347 stainless steels offer higher creep and stress rupture properties than Alloy 304 and, particularly, Alloy 304L, which might also be considered for exposures where sensitization and intergranular corrosion are concerns. This results in higher elevated temperature allowable stresses for these stabilized alloys for ASME Boiler and Pressure Vessel Code applications. The 321 and 347 alloys have maximum use temperatures of 15000F (8160C) for code applications like Alloy 304, whereas Alloy 304L is limited to 8000F (4260C).
    High carbon versions of both alloys are available. These grades have UNS designations S32109 and S34709.


    Chemical Composition of 347 Stainless Steel Pipes and Tubes
    Represented by ASTM A240 and ASME SA-240 specifications.

    Element 347
    Carbon* 0.08
    Manganese 2.00
    Phosphorus 0.045
    Sulfur 0.03
    Silicon 0.75
    Chromium 17.00-19.00
    Nickel 9.00-13.00
    Columbium +
    Tantalum**
    10xC min to 1.00 max
    Tantalum --
    Titanium** --
    Cobalt --
    Nitrogen --
    Iron Balance 


    Resistance to Corrosion of 347 Stainless Steel Pipes and Tubes
    General Corrosion
    Alloys 321 and 347 offer similar resistance to general, overall corrosion as the unstabilized chromium nickels Alloy 304. Heating for long periods of time in the chromium carbide precipitation range may affect the general resistance of Alloys 321 and 347 in severe corrosive media.
    In most environments, both alloys will show similar corrosion resistance; however, Alloy 321 in the annealed condition is somewhat less resistant to general corrosion in strongly oxidizing environments than annealed Alloy 347. For this reason, Alloy 347 is preferable for aqueous and other low temperature environments. Exposure in the 8000F to 15000F (4270C to 8160C) temperature range lowers the overall corrosion resistance of Alloy 321 to a much greater extent than Alloy 347. Alloy 347 is used primarily in high temperature applications where high resistance to sensitization is essential, thereby preventing intergranular corrosion at lower temperatures.
    Physical Properties of 347 Stainless Steel Pipes and Tubes
    The physical properties of Types 321 and 347 are quite similar and, for all practical purposes, may be considered to be the same. The values given in the table may be used to apply to both steels.
    When properly annealed, the Alloys 321 and 347 stainless steels consist principally of austenite and carbides of titanium or columbium. Small amounts of ferrite may or may not be present in the microstructure. Small amounts of sigma phase may form during long time exposure in the 10000F to 15000F (5930C to 8160C) temperature range.
    The stabilized Alloys 321 and 347 stainless steels are not hardenable by heat treatment.
    The overall heat transfer coefficient of metals is determined by factors in addition to thermal conductivity of the metal. In most cases, film coefficients, scaling, and surface conditions are such that not more than 10 to 15% more surface area is required for stainless steels than for other metals having higher thermal conductivity. The ability of stainless steels to maintain clean surfaces often allows better heat transfer than other metals having higher thermal conductivity.
    Mechanical Properties of 347 Stainless Steel Pipes and Tubes
    Room Temperature Tensile Properties
    Minimum mechanical properties of the stabilized Alloys 321 and 347 chromium-nickel grades in the annealed condition (20000F [10930C], air cooled) are shown in the table.
    Elevated Temperature Tensile Properties
    Typical elevated temperature mechanical properties for Alloys 321 and 347 sheet / strip are shown below. Strength of these stabilized alloys is distinctly higher than that of non-stabilized 304 alloys at temperatures of 10000F (5380C) and above.
    High carbon Alloys 321H and 347H (UNS32109 and S34700, respectively) have higher strength at temperatures above 10000F (5370C). ASME maximum allowable design stress data for Alloy 347H reflects the higher strength of this grade in comparison to the lower carbon Alloy 347 grade. The Alloy 321H is not permitted for Section VIII applications and is limited to 8000F (4270C) use temperatures for Section III code applications.
    Heat Treatment of 347 Stainless Steel Pipes and Tubes
    The annealing temperature range for Alloys 321 and 347 is 1800 to 20000F (928 to 10930C). While the primary purpose of annealing is to obtain softness and high ductility, these steels may also be stress relief annealed within the carbide precipitation range 800 to 15000F (427 to 8160C), without any danger of subsequent intergranular corrosion. Relieving strains by annealing for only a few hours in the 800 to 15000F (427 to 8160C) range will not cause any noticeable lowering in the general corrosion resistance, although prolonged heating within this range does tend to lower the general corrosion resistance to some extent. As emphasized, however, annealing in the 800 to 15000F (427 to 8160C) temperature range does not result in a susceptibility to intergranular attack.For maximum ductility, the higher annealing range of 1800 to 20000F (928 to 10930C) is recommended.


    Astm A213 Tp347h Stainless Steel Seamless TubeStainless Steel Seamless Pipe Astm A312 Tp347347h A213 Tp347h A269 Tp347h

    Packaging & Delivery
    Selling Units : Kilogram
    Package Type : Ply-wooden Case /Iron Case/ Bundle with plastic Cap
    Supply Ability & Additional Information

    PackagingPly-wooden Case /Iron Case/ Bundle with plastic Cap

    TransportationOcean,Land,Air

    Place of OriginCHINA

    CertificateABS, GL, DNV, NK, PED, AD2000, GOST9941-81, CCS, ISO 9001-2008

    Payment TypeL/C,T/T,Western Union

    IncotermFOB,CFR,CIF,EXW

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    YUHONG HOLDING GROUP is one of the largest Procurement, Engineering & Contracting Group companies in China. Our group branch company and factory have been already approved by : ABS, LR, DNV, GL, BV, CCS, KR, PED 97/23/EC, AD2000-WO, GOST9941-81, CCS, TS, CNNC, ISO9001-2015, ISO 14001, ISO 18001, API 5L , API 5CT , API 6D, And our branch company Zhejiang Yuhongwell Steel Co.Ltd has expanded its field of activities and entered in trade and supply of tubular & flat products in Duxplex and Super Duplex, Stainless Steel, Nickel Base alloy Steel ,Cr-Mo alloy steel , Copper Nickel alloy steel,Carbon Steel for our reputed clients worldwide. These products are widely used in various important sectors like Mining, Energy, Boiler & Heat Exchanger, Petrochemical, Chemical Industry, Food plant, Paper plant, Gas and Fluid Industry etc. YUHONG HOLDING GROUP has gained rich experience in Pipes, Fittings, Flanges, Valves, Structural steel, Coils and Plates in past eight years. In a short span of time, YUHONG brand has marked its global presence in more than 40 countries, like, Korea, USA, Canada, Mexico, Colombia, Bolivia, Chile, Argentina, Brazil, Ecuador, Austria, New Zealand,...
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