Super Duplex Stainless Steel Pipe Grade UNS S32760 SS Pipe DN10 - DN250
Super Duplex Alloy UNS S32760 (F55 / 1.4501) 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, with Critical Pitting Temperature exceeding 50°C.
Providing higher strength than both austenitic and 22% Cr Duples Stainless Steels UNS S32760 (F55) is suited to a variety of applications in industries such as Chemical Processing, Oil & Gas, and Marine environments.
UNS S32760 (F55 / 1.4501) is listed in NACE MR 01 75 for sour service and having gained ASME Approval for Pressure Vessel applications.
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)
ll Pipes is manufactured and inspected/tested to the relevant standards including ASTM, ASME and API etc.
| UNS | Super Duplex Industry Specifications | Chemical Composition | Min.Tensile
(KSI) | Min.Yield
(KSI) | Elongation
% |
| UNS S32750 | ASTM A182 F53, A240, A276, A479, A789, A790, A815, A928, A988
SAE J405 | C 0.030 max
Cr 24.0-26.0
Cu 0.5 max
Mn 1.20 max
Mo 3.0-5.0
N 0.24-0.32
Ni 6.0-8.0
P 0.035 max
S 0.020 max
Si 0.8 max | 116 | 80 | 15 |
| UNS S32760 | ASTM A182 F55, A240, A276, A314, A473, A479, A789, A790, A815, A928, A988
SAE J405 | C 0.03 max
Cr 24.0-26.0
Cu 0.5-1.0
Mn 1.0 max
Mo 3.0-4.0
N 0.2-0.3
Ni 6.0-8.0
P 0.03 max
S 0.01 max
Si 1.0 max
W 0.5-1.0 | 109 | 80 | 2 |
S32760 super duplex stainless steel is developed to be used in aggressive environments. Properties of S32760 include toughness, high strength, corrosion resistance in a large number of organic and inorganic acids. Finally it features high resistance to strong alkalis and resists corrosion in a number of non-oxidizing acids.
While involving extended exposure to temperatures more than 572F use of S32760 is not recommended. The chemical composition of S32750 and S32760 are similar; however, the latter contains slightly more copper and tungsten. The copper content (min. 0.5, max 1.0) permits excellent resistance to corrosion in many non-oxidizing and mineral acids like hydrochloric and sulfuric acid.
Chemical Composition of UNS S32750 Super Duplex Stainless Steel Pipes and Tubes
| Elements | C | Cr | Cu | Fe | Mo | Mn | N | Ni | P | S | Si | W |
| Minimum | | 24.0 | 0.5 | REMAINDER | 3.0 | | 0.20 | 6.00 | | | | 0.50 |
| Maximum | 0.030 | 26.00 | 1.0 | | 4.0 | 1.0 | 0.30 | 8.00 | 0.030 | 0.010 | 1.00 | 1.00 |
Mechanical Properties of UNS S32760 Super Duplex Stainless Steel Pipes and Tubes
| 0.2% Proof Stress (N/mm2 ) [ksi] minimum | 550 [79.8] |
| Ultimate Tensile Strength (N/mm2) [ksi] minimum | 750 [108.8]] |
| Elongation (%) minimum | 25 |
| Hardness (HBN) | 270max |
| Reduction of Cross Section Area (%) minimum | 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] |
| Additional Testing |
| ASTM G48A Corrosion test at 50°C | No pitting and weight loss <0.8g/m2 |
| Ultrasonic Testing | According to ASTM A388 |
| Ferrite Content | 35%-55% |
| Microstructure | Microstructure certified free from grain boundary carbides, sigma, chi and laves phases |
Physical Properties of UNS S32760 Super Duplex Stainless Steel Pipes and Tubes
| Density (Kg.m-3) | 7810 |
| Magnetic Permeability | 33 |
| Young’s Modulus (N/mm2) | 199 x 103 |
| Fracture Toughness, KQ (MPa.m½) | 98 |
| Specific Heat, 20°C (J.Kg-1.°K-1) | 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 |
What are the characteristics of Duplex UNS S32760?
- High strength compared to austenitic and 22% chrome duplex stainless steels
- Excellent corrosion resistance in a wide variety of corrosive chemicals including seawater and industrial acids
- Excellent ductility and impact strength at both ambient and sub-zero temperatures
- High resistance to abrasion, erosion and cavitation erosion Excellent resistance to stress corrosion cracking
- Applicable for sour service operation
- Specified for pressure vessel applications
Applications of S32760 Super Duplex Stainless Steel
The applications of S32760 super duplex stainless steel are:
- Oil and gas industry applications.
- Pollution control.
- Pulp and paper.
- Desalination.
- Mining and mineral industries.
- Marine industries.
- Power generation.
- Flue-gas desulfurization.
- Chemical, pharmaceutical.
UNS S32760 Super Duplex Stainless Steel Pipe and Tube Packing
UNS S32760 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 S32760 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
Types of Packaging:
- - Bundles (hexagonal)
- - Wooden Boxes
- - Crates (steel/wooden)
- - Special crates for U-Bend tubes with each radius separated
- - Packaging for SSof S32760 Super Duplex Stainless Steel PipeSeamless as per customer's requirements
Special Features:
- - Each bundle covered with plastic for protection against extreme weather.
- - End of SS UNS S32760 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.
Product Tags:
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DN10-DN250 Super Duplex Stainless Steel Pipe Grade UNS S32760 Images
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