347H Stainless Steel Pipe is the higher carbon (0.04 – 0.10) version of the alloy. It was developed for enhanced creep resistance and for higher strength at temperatures above 1000°F (537°C). In most instances, the carbon content of the pipe enables dual certification. 347H Stainless Steel Pipe is stabilized stainless steel plate which offers as its main advantage an excellent resistance to intergranular corrosion following exposure to temperatures in the chromium carbide precipitation range from 800 to 1500°F (427 to 816°C). Alloy 347 stainless steel plate is stabilized by the addition of columbium and tantalum.
The steel has excellent forming and welding qualities and excellent toughness even at cryogenic temperatures.
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.
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.
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
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.
Resistance to corrosion of 347H 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.
|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.|
|Melting Range,?||1450 -C|
|Tensile Strength (MPa)||515|
|Yield Strength (MPa)||205|
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|
347H 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 347H 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
We export 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 347H Stainless Steel Seamless Pipes, Prosaic Steel and Alloys is committed to provide each and every customer with the highest standard of customer service. We deals in 347H Stainless Steel Seamless Pipes in India & Overseas, offering a wide range of 347H Stainless Steel Seamless Pipes.