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Grades of Super Duplex Steel Pipes 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 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 and 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.
What Makes UNS S32760 Super Duplex Steel Unique?
UNS S32760, also known as super duplex stainless steel, is a duplex stainless steel with a microstructure of 50% austenite and 50% ferrite. It has a unique combination of properties that make it useful in many applications and This duplex stainless steel is specifically designed to perform well in demanding environments where high Strength and corrosion resistance are paramount.
Comprehensive Analysis of the Chemical Composition
When The chemical composition of UNS S32760 Super Duplex Steel Pipes is designed to provide a balanced combination of Strength and ductility so that time many Impacts are generated such as The chemical components of Alloy Steel, including iron, carbon, and other Alloy elements, can significantly impact its properties and Comprehensive Analysis of Confirm the identity of a material, Identify differences between similar materials, Provide information about chemical structures, sample components, active ingredients
Confirm the identity of a materialUNS S32760 Super Duplex Steel and Alloy Steel Pipes is widely used in construction and other structural applications Many Industries use Steel Plate for their production and UNS S32760 Super Duplex Steel Pipes is used in Major production houses such as Offshore Oil and Gas, Chemical Processing, Desalination Plants, Marine Engineering, Nuclear Industry
Offshore Oil and GasNuclear Industry
Offshore Oil and Gas Used in subsea equipment, risers, and piping systems due to its superior corrosion resistance in seawater and its Strength under high pressure and Chemical Processing Ideal for handling aggressive chemicals and high-temperature environments, including reactors, heat exchangers, and storage tanks and Desalination Plants Provides reliable performance in the highly corrosive environments found in desalination, where high chloride levels are prevalen
Marine Engineering Extensively used in shipbuilding and marine structures that are constantly exposed to saltwater and require durable, long-lasting materials and Nuclear Industry Employed in the construction of nuclear power plant components where strength and corrosion resistance are critical.
| Trade Name | UNS | Super Duplex Industry Specifications | Chemical Composition |
Min.Tensile (KSI) |
Min.Yield (KSI) |
Elongation % |
|
SAF 2507® |
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 and Alloy 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.
| 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 |
| 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 |
| 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 |
The applications of S32760 super duplex stainless steel are:
Oil and gas industry applications.
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