SCH40 Stainless Steel Pipe SCH80 SCH160 TP347 ASTM A213 A312

SCH40 SCH80 SCH160 TP347 Stainless Steel Pipe ASTM A213 A312 SS Pipe Tube

347 Stainless Steel Pipe is columbium stabilized austenitic stainless steel pipe with good general corrosion resistance and somewhat better resistance in strong oxidizing conditions than 321 (UNS S32100). It has excellent resistance to intergranular corrosion after exposure to temperatures in the chromium carbide precipitation range of 800 – 1500°F (427 – 816°C). The alloy has good oxidation resistance and creep strength to 1500°F (816°C). It also possesses good low temperature toughness.

347 Stainless Steel Pipe 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 Application

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

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

Stainless Steel DIN 1.4550 / 1.4961 Seamless TubesStockist, SS UNS S34700 / S34709 Seamless Tubing, SS 347 Cold Drawn Tubes, SS 347H Seamless Tubes, SS 347 Seamless Tubing In India.

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.

Why Choose Prosaic Steel and Alloys for Stainless Steel 347, 347H, UNS S34700, UNS S34709, WNR 1.4550, WNR 1.4961 Pipes & Tubes?

• Short Delivery Times – We are the quickest when it comes to servicing our customers with high quality stainless steel 347/347H Pipes and tubes.
• Custom Sizes: We can process stainless steel 347/347H Pipes and tubes to produce and supply either standard or non-standard stainless steel Pipes.
• Best Prices: Our prices for stainless steel 347/347H Pipes are competitive.
• Quality Products: We make sure that our quality of SS 347/347H Pipes and tubes are compromised at any cost.
• Complete Certification: Our products are supplied with complete certification Mill TC, Test Reports from NABL approved Labs, Hydro Testing.
• Pipe Fittings and Flanges: We are a manufacturer of 347/347H forged Pipe fittings, 347/347H butt weld Pipe fittings, 347/347H compression ferrule fittings, and 347/347H flanges, offering our customers the convenience to purchase all their requirements from one vendor.
• Complete Documentation: For our overseas customers in the Middle East, GCC region, South Amercia and the African region we offer our SS 347/347H grade materials with all documents including Invoice, Packing List, Mill Test Certificates, Certificate of Origin and Bill of Lading

Stainless Steel 347, 347H, UNS S34700, UNS S34709, WNR 1.4550, WNR 1.4961 Pipes and Tubes Available Product Forms

• SS 347/347H Welded and Seamless Tubes, Pipes
• SS 347/347H Hydraulic and Instrumentation Tubes
• SS 347/347H Coiled Tubing
• SS 347/347H Capillary Tubes
• SS 347/347H Seam Welded and Cold Redrawn Pipe and Tubes
• SS 347/347H Seam Welded, Cold Redrawn and Annealed Pipes and Tubes

347/347H Stainless Steel Pipes, 347/347H Stainless Steel Tubes Service

• 347/347H Stainless Steel Pipe Polishing
• 347/347H Stainless Steel Pipe Beveling
• Heat Treatment, Annealing, Pickling of SS 347/347H ERW, Seamless Pipes
• Ultrasonic Testing of SS 347/347H Pipes
• 100% X-Ray Welding for 347/347H Large Diameter Custom Size Stainless Steel Pipes
• Drawing Services
• Special Testing Requirements Destructive Testing, Non Destructive Testing etc.

Production, Supply, Stock Range of Stainless Steel 347, 347H Pipes and Stainless Steel 347H Tubes

• Outside Diameter: 6.00 mm OD up to 250 mm OD, Sizes up to 12 NB available Ex-stock, OD Size Steel Tubes available Ex-stock
• Thickness Range: 0.3mm 50 mm, SCH 5, SCH10, SCH 40, SCH 80, SCH 80S, SCH 160, SCH XXS, SCH XS
• Type: Seamless / ERW / Welded / Fabricated / CDW
• Form: Round Pipes/Tubes, Square Pipes/Tubes, Rectangular Pipe/Tubes, Coiled Tubes, U Shape, Pan Cake Coils, Hydraulic Tubes
• Length: Single Random, Double Random & Required Length End: Plain End, Beveled End, Treaded
• End Protection: Plastic Caps | Outside Finish: 2B, No.4, No.1, No.8 Mirror Finish for Stainless Steel Pipes, Finish as per customer Requirements
• Delivery Condition: Annealed and Pickled, Polished, Bright Annealed, Cold Drawn
• Inspection, Test Reports: Mill Test Certificates, EN 10204 3.1, Chemical Reports, Mechanical Reports, PMI Test Reports, Visual Inspection Reports, Third Party Inspection Reports, NABL Approved Lab Reports, Destructive Test Report, Non Destructive Test Reports
• Packing: Packed in Wooden Boxes, Plastic Bags, Steel Strips Bundled, or as per Customers Requests
• Specials: Sizes and Specifications other than above can be manufactured on request

Markings on the Stainless Steel 347, 347H, UNS S34700, UNS S34709, WNR 1.4550, WNR 1.4961 Seamless/Welded Pipes

The full identification of the Pipe should be continuously marked down its whole length, including:

• Nominal Pipe Size (Nominal Bore)
• Schedule (Wall Thickness)
• Specification
• Grade
• Method of Manufacture (Seamless or Welded)
• Heat Number
• Manufacturer s Name or Symbol

General Properties of 347 Stainless Steel Pipes

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

Represented by ASTM A240 and ASME SA-240 specifications.

Resistance to Corrosion of 347 Stainless Steel Pipes

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

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

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

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.

347/347H Stainless Steel Pipes, Tube Stock and Supply Range

347 Stainless Steel Pipe and Tube Packing347 Stainless Steel Seamless Pipes is sleeved into plastic bag individually, pieces wrapped with water-proof material, bundled with nylon rope. Clear labels are tagged on the outside of the package for easy identification of the quantity and product I.D. Great care is taken during operation and transportation. SS 347 ASTM A312 Seamless Pipe packing will be according to international standard in bundles strapped by strips then into containers to avoid any damage.

Delivery: Within 10-25 days or asap if we have enough stock

Types of Packaging:

• - Bundles (hexagonal)
• - Wooden Boxes
• - Crates (steel/wooden)
• - Special crates for U-Bend tubes with each radius separated
• - Packaging for SS 347 ASTM A312 Seamless Pipe as per customer's requirements

Special Features:

• - Each bundle covered with plastic for protection against extreme weather.
• - End of SS 347 ASTM A312 Seamless Pipe protected by plastic caps.
• - Bundles strapped with plastic strips.
• - Each radius of U-Bend tube separated by a separator.
• - Packaging list (laminated) placed with box/crate.