The Super Duplex Steel UNS S32760 Tubes are designed for harsh applications where resistance to corrosion and strength are required. The tungsten alloyed and Super Duplex Stainless Steel is also resistant to pitting attack and crevice corrosion as well as Stress Corrosion Cracking. With increased amounts of Chromium, Molybdenum, and Nitrogen content, it provides excellent resistance to both Organic and Inorganic Acids. The composition of the UNS S32760 material is suitable for use in chemical processing plants and offshore applications due to its reliability and efficiency. The tubes are available in seamless and welded variants as well as in the ERW and Ellowed and Formed Welded variants.
As it has an excellent balance of austenitic and ferritic microstructure, the Super Duplex UNS S32760 Tubes offer almost twice the yield strength offered by an austenitic stainless steel, and they also have extraordinary toughness and machining properties. They cannot be hardened through heat treatment, but they have very good hardness properties through work, and are also durable for a longer period. The UNS S32760 performs remarkably well in warm chlorinated waters, as well as extreme marine environments, and they also surpass many other grades, such as 316 stainless steel, especially in warm water applications.
| Specification | Details |
| Specifications | ASTM A789 / ASME SA789 |
| Dimensions | ASTM, ASME, and API |
| Schedule | SCH 5, SCH 10, SCH 40, SCH 80, SCH 80S, SCH 160, SCH XXS, SCH XS |
| Type | Seamless / ERW / Welded / Fabricated / CDW |
| Seamless Tubes Sizes | 1/2" NB � 8" NB |
| Welded Tubes Sizes | 6" NB � 24" NB |
| Length | Single Random, Double Random & Required Length |
| End | Plain End, Beveled End, Threaded |
| Outer Diameter | 6.0 mm � 630 mm |
| Thickness | 0.3 mm � 50 mm |
| Element | Carbon (C) | Manganese (Mn) | Silicon (Si) | Phosphorus (P) | Sulfur (S) | Chromium (Cr) | Molybdenum (Mo) | Nickel (Ni) | Nitrogen (N) | Iron (Fe) |
| Value (%) | 0.05 max | 1.00 max | 1.00 max | 0.030 max | 0.010 max | 24.00 � 26.00 | 3.00 � 4.00 | 6.00 � 8.00 | 0.20 � 0.30 | 57.61 min |
| Grade | Tensile Strength (MPa) min | Yield Strength 0.2% Proof (MPa) min | Elongation (% in 50 mm) min | Hardness (Brinell) max |
| S32760 | 795 | 550 | 25 | 270 |
| Standard / Common Name | UNS Designation | Werkstoff Nr. |
| Super Duplex 2507 / F55 | S32760 | 1.4501 |
| Property | Value |
| Density (Kg�m?�) | 7810 |
| Magnetic Permeability | 33 |
| Young's Modulus (N/mm�) | 199 � 10� |
| Fracture Toughness, KQ (MPa�m�) | 98 |
| Specific Heat, 20�C (J�Kg?��K?�) | 475 |
| Specific Electrical Resistance, 20�C (�O�m) | 0.18 |
| Thermal Conductivity, 20�C (W�m?��K?�) | 14.2 |
| Mean Coefficient of Thermal Expansion, 20�100�C (�K?�) | 11.1 |
| Dimensions (mm) | Wall Thickness (mm) | Weight per Metre (kg) | Dimensions (mm) | Wall Thickness (mm) | Weight per Metre (kg) |
| 12.7 � 12.7 | 1.20 | 0.44 | 40 � 40 | 1.20 | 1.49 |
| 12.7 � 12.7 | 1.50 | 0.55 | 40 � 40 | 1.50 | 1.85 |
| 15 � 15 | 1.20 | 0.53 | 40 � 40 | 2.00 | 2.45 |
| 15 � 15 | 1.50 | 0.65 | 40 � 40 | 3.00 | 3.75 |
| 20 � 20 | 1.20 | 0.71 | 50 � 50 | 1.50 | 2.32 |
| 20 � 20 | 1.50 | 0.88 | 50 � 50 | 2.00 | 3.08 |
| 20 � 20 | 2.00 | 1.19 | 50 � 50 | 3.00 | 4.65 |
| 25 � 25 | 1.20 | 0.92 | 60 � 60 | 2.00 | 3.71 |
| 25 � 25 | 1.50 | 1.14 | 60 � 60 | 3.00 | 5.49 |
| 25 � 25 | 2.00 | 1.49 | 70 � 70 | 3.00 | 6.53 |
| 25 � 25 | 3.00 | 2.20 | 80 � 80 | 2.00 | 4.98 |
| 30 � 30 | 1.20 | 1.10 | 80 � 80 | 3.00 | 7.53 |
| 30 � 30 | 1.50 | 1.37 | 100 � 100 | 2.00 | 6.40 |
| 30 � 30 | 2.00 | 1.84 | 100 � 100 | 3.00 | 9.53 |
| 30 � 30 | 3.00 | 2.72 | � | � | � |
| Outside Diameter (O.D.) Range | Wall Thickness Range (inches) | O.D. Tolerance (� inches) |
| 1/2" to 1" incl. | .025 to .065 | .005 |
| Over .065 to .134 | .010 | |
| 1" to 1-1/2" incl. | .025 to .065 | .008 |
| Over .065 to .134 | .010 | |
| 1-1/2" to 2" incl. | .025 to .049 | .010 |
| Over .049 to .083 | .011 | |
| Over .083 to .148 | .012 | |
| 2" to 2-1/2" incl. | .032 to .065 | .012 |
| Over .065 to .109 | .013 | |
| Over .109 to .165 | .014 | |
| 2-1/2" to 3-1/2" incl. | .032 to .165 | .014 |
| Over .165 to .220 | .020 | |
| 3-1/2" to 5" incl. | .083 to .165 | .020 |
| Over .165 to .220 | .025 |
| Gauge (GA) | Thickness Range (inch) | Typical Value (inch) |
| 22 | 0.025 � 0.029 | 0.028 |
| 20 | 0.031 � 0.035 | 0.035 |
| 19 | 0.038 � 0.042 | 0.042 |
| 18 | 0.044 � 0.049 | 0.049 |
| 17 | 0.053 � 0.058 | 0.058 |
| 16 | 0.060 � 0.065 | 0.065 |
| 15 | 0.066 � 0.074 | 0.072 |
| 14 | 0.075 � 0.085 | 0.083 |
| 13 | 0.087 � 0.097 | 0.095 |
| 12 | 0.101 � 0.111 | 0.109 |
| 11 | 0.112 � 0.122 | 0.120 |
| 10 | 0.126 � 0.136 | 0.134 |
| 9 | 0.140 � 0.150 | 0.148 |
| 8 | 0.157 � 0.167 | 0.165 |
| 7 | 0.175 � 0.185 | 0.180 |
| Form | OD (Size Range) | Wall (Size Range) | Lengths and/or Coils | Grades | OD Tolerance | Wall Tolerance | Length Tolerance |
| Pressure & Corrosion Tubing (meets or exceeds requirements for welded) Specification: ASTM A789 | 1/16" (1.59 mm) � 4" (101.6 mm) Metric sizes also available | 0.010" (0.25 mm) � 0.220" (5.59 mm) | Random or cut lengths up to 40' (12.2 m) Coils to 1-1/2" OD | Super Duplex 2507 | < 1-1/2" (38.1 mm): �0.005" (0.13 mm) 1-1/2" (38.1 mm) to 3" (76.2 mm): �0.010" (0.25 mm) 3-1/2" (88.9 mm) to 4" (101.6 mm): �0.015" (0.38 mm) |
�10% | Randoms up to +2" (50.8 mm), Cuts +1/8" (3 mm) / -0", Coils to 80,000' (24,384 m) |
| Subsea Umbilical Tubing Specifications: ASTM A789 and ASTM A790 | 3/8" (9.53 mm) to 1-1/2" (38.1 mm) | 0.039" (0.99 mm) to 0.125" (3.18 mm) | Cut lengths to 60' (18.3 m) Coils to 1-1/2" OD* | Super Duplex 2507 | �0.005" (0.127 mm) | �10% | Coils to 80,000' (24,384 m) |
The Super Duplex Stainless Steel tubes, UNS S32760, are produced in accordance with highly advanced metallurgical procedures that provide high mechanical strength, high corrosion resistance and high service heat. All production processes are effectively monitored to preserve the best duplex microstructure and to ensure regular functioning in extreme environments.
Super Duplex Stainless Steel UNS S32760 tubes find application in industries that require outstanding strength, resistance to corrosion and dependability in severe operating environments.
These tubes are widely applied in offshore and onshore oil and gas systems, like pipelines, heat exchangers, and processing equipment that would be subjected to high pressure and very corrosive media.
UNS S32760 tubes are used to handle aggressive, high-temperature fluids and corrosive process conditions in the chemical plants and refineries, as well as petrochemical plants.
These tubes are also widely employed in ships, marine buildings, offshore oil platforms, and seawater systems and are widely used because of their great resistance to seawater corrosion.
These tubes are common in desalination facilities, reverse osmosis, and water treatment facilities that require resistance to salty and brackish water.
UNS S32760 tubes are recommended to be used in the heat exchanger, condensers, pressure vessels, and other high-pressure devices demanding high mechanical strength and excellent corrosion resistance.
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It is a high-strength stainless steel with excellent corrosion resistance, designed for harsh and corrosive environments.
Yes, they offer higher strength and better corrosion resistance than Duplex 2205.
They have excellent resistance to pitting, crevice corrosion, and stress corrosion cracking.
Yes, they perform very well in seawater and marine environments.
The maximum operating temperatures of this material are up to around 300�C.
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