Type 304 | Type 304L | Type 304H | Type 309 | Type 310s | Type 316 | Type 316L | Type 316H | Type 316Ti | Type 317L | Type 321 | Type 321H | Type 347 | Type 347H | Type 410 | Type 904L | UNS S31803 | UNS S32750 | UNS S32760
ASTM A269 TP 347 / 347H Stainless Steel Seamless Pipes and Tubes 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.
Both 347/347H are used primarily in elevated temperature applications.
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.
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
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
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.
Represented by ASTM A240 and ASME SA-240 specifications.
|Grade||C||Mn||Si||P||S||Cr||Ni||Co + Ta|
|347||0.08 max.||2.00 max.||0.75 max.||0.045 max.||0.03 max.||17.0 - 19.0||9.0-13.0||10 x C min.|
|347H||0.04- 0.10||2.00 max.||0.75 max.||0.045 max.||0.03 max.||17.0 - 19.0||9.0-13.0||8 x C min.|
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.
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.
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.
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.
|Sr. No.||Product Description||Outside Diamter, OD (in mm)||Wall Thickness, WT (in mm)|
|1||347/347H Stainless Steel Round Pipe/Tube||6mm 630mm||0.5mm-30mm|
|2||347/347H Stainless Steel Square Pipe/Tube||12.7mm* 12.7mm to 300mm* 300mm||0.5mm-30mm|
|3||347/347H Stainless Steel Rectangular Pipe/Tube||10*20mm to 100*200mm||0.5mm-30mm|
|4||347/347H Stainless Steel Colour Coated Pipe/Tube||6mm to 630mm||0.5mm-30mm|
|5||347/347H Stainless Steel Ornamental Tubes||12.7mm to 76.2mm||0.5mm-2.0mm|
|6||347/347H Stainless Steel Electropolished Pipes/Tubes||12.7mm to 250mm||0.5mm-30mm|
|7||347/347H Stainless Steel Slot Round Pipe/Tube||12.7mm to 76.2mm||0.5mm-2.0mm|
|8||347/347H Stainless Steel Triangle Tube||16mm to 85mm||0.5mm-3.0mm|
|9||347/347H Stainless Steel Hexagonal Tube||13mm to 85mm||0.5mm-2.0mm|
|10||347/347H Stainless Steel Handrail Tube||0.5mm-2.0mm|
|11||347/347H Stainless Steel U Shaped Tube||20mm to 200mm||0.5mm-2.0mm|
|12||347/347H Thin-Wall Stainless Steel Tube||22mm*0.7mm to 108mm*2.0mm||0.5mm-2.0mm|
|13||347/347H Inner/Outside Polished Stainless Steel Tube, Pipes||12.5mm to 203.2mm||1.0mm 5mm|
|14||347/347H Stainless Steel Capillary Tube||0.28mm to 10mm||0.08mm 1.2mm|
|15||347/347H Stainless Steel Seamless Tube||6mm to 430mm||0.8mm 30mm|
347 Stainless Steel Seamless Pipes and Tubes 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 A269 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
We export ASTM A269 TP 347 / 347H Stainless Steel Seamless Pipe and Tube to Saudi Arabia, Iran, Iraq, United Arab Emirates, Qatar, Bahrain, Oman, Kuwait, Turkey, Egypt, Yemen, Syria, israel, Jordan, Cyprus, Singapore, Malaysia, Indonesia, Thailand, Vietnam, South Korea, Japan, Sri Lanka, Maldives, Bangladesh, Mayanmar, Taiwan, Cambodia, Argentina, Bolivia, Brazil, Chile, Venezuela, Colombia, Ecuador, Guyana, Paraguay, Uruguay, United States Of America, Canada, Mexico, Panama, Costa Rica, Puerto Rica, Trinidad And Tobago, Jamaica, Bahamas, Denmark, Russia, Norway, Germany, France, Italy, United Kingdom, Spain, Ukraine, Netherland, Belgium, Greece, Czech Republic, Portugal, Hungary, Albania, Austria, Switzerland, Slovakia, Finland, Ireland, Croatia, Slovenia, Malta, Nigeria, Algeria, Angola, South Africa, Libya, Egypt, Sudan, Equatorial Guinea, The Republic Of Congo, Gabon, Europe, Africa, Asia, North America, South America, Middle East, Far East.etc.
Prosaic Steel and Alloys is a well known worldwide exporter of ASTM A269 TP 347 / 347H Stainless Steel Seamless Pipes and Tubes, Prosaic Steel and Alloys is committed to provide each and every customer with the highest standard of customer service. We deals in ASTM A269 TP 347 / 347H Stainless Steel Seamless Pipes and Tubes in India & Overseas, offering a wide range of ASTM A269 TP 347 / 347H Stainless Steel Seamless Pipes and Tubes.