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 S32205
Super Duplex UNS S32750 combines the most desirable characteristics of both ferritic and austenitic steels. It has excellent corrosion resistance to a wide variety of media, with outstanding resistance to
pitting and crevice corrosion in seawater and other chloride containing environments due to its high chromium, molybdenum, and nitrogen level, with Critical Pitting Temperature exceeding 50°C.
The duplex microstructure gives this grade high strength UNS S32750 a low coefficient of thermal expansion and higher heat conductivity than austenitic steels and is suitable for working temperatures up to 300°C.
Listed in NACE MR 01 75 for sour service UNS S32750 and having gained ASME Approval for Pressure Vessel applications it can be used in a wide variety of 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.
|Trade Name||UNS||Super Duplex Industry Specifications||Chemical Composition||Min.Tensile
||ASTM A182 F53, A240, A276, A479, A789, A790, A815, A928, A988
|C 0.030 max
Cu 0.5 max
Mn 1.20 max
P 0.035 max
S 0.020 max
Si 0.8 max
|UNS S32760||ASTM A182 F55, A240, A276, A314, A473, A479, A789, A790, A815, A928, A988
|C 0.03 max
Mn 1.0 max
P 0.03 max
S 0.01 max
Si 1.0 max
Duplex 2507 is a super duplex stainless steel developed for applications that demand high strength and corrosion resistance. Alloy 2507 has 25% chromium, 4% molybdenum, and 7% nickel. This high molybdenum, chromium and nitrogen content causes high resistance to chloride pitting and crevice corrosion attack and the duplex structure provides 2507 with exceptional resistance to chloride stress corrosion cracking.
Using Duplex 2507 must be restricted to applications below 600° F (316° C). Extended elevated temperature exposure can reduce both the toughness and corrosion resistance of alloy 2507.
Duplex 2507 has good mechanical properties. Often a light gauge of 2507 material can be used to achieve the same design strength of a thicker nickel alloy. The resulting weight savings can considerably reduce the overall cost of fabrication.
Super Duplex UNS S32750 has excellent corrosion resistance in a wide variety of corrosive media making it ideal for use in environments exposed to the harshest chemical conditions. It has outstanding resistance to pitting and crevice corrosion in seawater and other chloride containing environments, with Critical Pitting Temperature exceeding 50°C. Compared to austenitic and 22%Cr duplex stainless steels, UNS S32750 is of higher strength and even more suitable in situations where it will be exposed to extremely high stresses. This combined with its excellent ductility and impact strength at both ambient and sub-zero temperatures further increases its appeal as the ultimate super duplex grade.
High resistance to abrasion, erosion and cavitation erosion combined with excellent resistance to stress corrosion cracking in chloride containing environments makes UNS S32750 perfect for use in the Oil and Gas Industries where subsea equipment is subject to some of the harshest chloride containing conditions in the world.
UNS S32750 is listed in NACE MR 01 75 for sour service for its suitability of use for oilfield equipment where sulphide stress corrosion cracking may be a risk in hydrogen sulphide (sour) environments. UNS S32750 is also ASME Approved for Pressure Vessel applications
|0.2% Proof Stress (N/mm2 ) [ksi] minimum||550[79.8]|
|Ultimate Tensile Strength (N/mm2) [ksi] minimum||800 |
|Elongation (%) minimum||25|
|Hardness (HBN)||270 max|
|Reduction of Cross Section Area (%)||45|
|Charpy V-notch Impact at ambient Temp (J) [ft.lb]||80min [59min]|
|Charpy V-notch Impact at -46°C (J) [ft.lb]||45av, 35min [33av, 25.8min]|
|ASTM G48A corrosion test at 40°C||No pitting and weight loss <4.0g/m2|
|Ultrasonic Testing||According to ASTM A388|
|Microstructure||Microstructure certified free from grain boundary carbides, sigma, chi and laves phases|
|Young’s Modulus (N/mm2)||199 x 103|
|Specific Heat, 20°C (J.Kg-1.°K-1)||475|
|Fracture Toughness, Kq (MPa.m)||475|
|Specific Electrical Resistance, 20°C (µO.m)||0.80|
|Thermal conductivity, 20°C (W.m-1.°K-1)||14.2|
|Mean coefficient of thermal expansion, 20-100°C (°K-1)||11.1 x 10-6|
The applications of S32750 super duplex stainless steel are:
UNS S32750 Super Duplex Stainless Steel 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. UNS S32750 Super Duplex Stainless Steel 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 UNS S32750 Super Duplex Stainless Steel Seamless Pipe 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 of UNS S32750 Super Duplex Stainless Steel Pipe and Tubes, Prosaic Steel and Alloys is committed to provide each and every customer with the highest standard of customer service. We deals in of UNS S32750 Super Duplex Stainless Steel Pipe and Tubes in India & Overseas, offering a wide range of of UNS S32750 Super Duplex Stainless Steel Pipe and Tubes.