Metinox Overseas is a reliable manufacturer and big supplier of Super Duplex Stainless Steel UNS S32750 Tubes, which are planned to be used in high-strength demand and high-resistance against corrosion. Super Duplex 2507, also referred to as UNS S32750, is a high-alloyed stainless steel alloy containing a high amount of chromium, molybdenum, and nitrogen, which is much better at performance than a traditional duplex grade like 2205. These tubes are being offered in seamless, welded, ERW, and EFW varieties, which are constructed in such a way that it meets the international standards of quality to give the correct dimension, strength, and reliability.
UNS S32750 Tubes have strong resistance to pitting, crevice corrosion, and chloride-induced stress corrosion cracking, and perform well in an acidic and chlorides environment as well. The low carbon content helps to minimize carbide precipitation, which increases the resistance to intergranular corrosion and helps to sustain the mechanical properties even after welding. Due to high tensile strength, excellent weldability, and durability, UNS S32750 tubes find many applications in the operation and installation of oil and gas projects, offshore platforms, chemical and petrochemical plants, heat exchanger tubes, desalination plants, and marine services among others, and Metinox Overseas supplies tubes of various sizes as per the requirements and projects of its customers.
| Specifications | Details |
| Standards | 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 Tube Sizes | 1/2" NB � 8" NB |
| Welded Tube Sizes | 6" NB � 24" NB |
| Length | Single Random, Double Random & Required Length |
| End Finish | 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 (%) | 0.030 max | 1.20 max | 0.80 max | 0.035 max | 0.020 max | 24.00 � 26.00 | 3.00 � 5.00 | 6.00 � 8.00 | 0.24 � 0.32 | 58.095 min |
| Property | Tensile Strength (MPa) min | Yield Strength 0.2% Proof (MPa) min | Elongation (% in 50 mm) min | Hardness Max (HB) | Hardness Max (HRC) |
| S32750 | 795 | 550 | 15 | 310 | 32 |
| Common Name | UNS Designation | Werkstoff Nr. | EN Designation |
| Super Duplex 2507 | S32750 | 1.4410 | X2CrNiMoN25-7-4 |
| Property | Value (Imperial Units) |
| Density | 0.28 lb/in� |
| Modulus of Elasticity | 29 psi � 106 |
| Coefficient of Thermal Expansion | 7.2 � 10?6 /�F |
| Thermal Conductivity | 8.7 Btu/(h�ft��F) |
| Heat Capacity | 0.12 Btu/lb��F |
| Electrical Resistivity | 31.5 O�in � 10?6 |
| 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) |
Metinox Overseas offers a comprehensive range of Super Duplex Stainless Steel UNS S32750 tube types to meet diverse industrial requirements.
Super Duplex S32750 Welded Tubes
Super Duplex S32750 Seamless Tubes
Super Duplex S32750 Round Tubes
S32750 tubes, such as Super Duplex Stainless Steel UNS, are produced through new technologies in order to provide high strength, high corrosion resistance, and life expectancy. Every single stage of the production process is monitored to ensure that the right balance between mechanical properties and corrosion performance is maintained.
Super Duplex Stainless Steel UNS S32750 tubes are popular in industries that need high strength, as well as good resistance to corrosion and high temperatures.
They are generally used in offshore and onshore oil and gas projects in pipelines, heat exchangers and processing systems where there are high-pressure environments and corrosive environments.
The UNS S32750 tubes are used to contain aggressive chemicals and high temperature fluids in chemical plants, reactors and piping systems.
They are very resistant to corrosion in seawater and are also commonly used in marine buildings, shipbuilding and ocean handling.
These tubes have very wide applications in desalination plants, reverse osmosis systems, and water treatment facilities due to their resistance to saline and brackish water.
The tubes are used in heat exchangers, condensers and pressure vessels that require durability, high strength and corrosion resistance.
Choose Metinox Overseas � Your Reliable Super Duplex Stainless Steel UNS S32750 Tube Supplier & Exporter.
Let us support your projects with quality, precision, and performance.
It is a high-strength stainless steel tube with excellent resistance to corrosion, especially in harsh and chloride-rich environments.
UNS S32750 offers higher strength and better corrosion resistance than 2205, while S32760 has slightly better pitting resistance due to added alloying elements.
Yes, they perform very well in seawater and marine conditions because of their strong resistance to corrosion and chloride attack.
Solution annealing is required to improve toughness, relieve stresses, and maintain corrosion resistance.
They undergo dimensional checks, mechanical testing, chemical analysis, and non-destructive tests to ensure quality and standard compliance.
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