Nascent Pipe & Tubes is a reliable producer and distributor of Duplex Steel S31803 Tubes throughout the world, with excellent capabilities of corrosion resistance and mechanical effect to be utilized in the most crucial industrial segments. Our UNS S31803, which is also called ASTM A789 by its universal standard name, is designed to perform strongly in varied fields that cover and may include marine, chemical processing, and oil & gas industries. The tubes that are supplied as seamless welded tubes under this standards are capable of high pressure and temperature and offer high fatigue strength and stress-corrosion cracking resistance.
The special two-phase microstructure of Duplex Steel S31803 combines both austenitic and ferritic stainless phases of stainless steel material, producing a high strength, as compared to standard stainless steels such as 304 or 316. The dual-phase structure, as well, enhances good resistance to pitting and crevice corrosion hence is very appropriate in low and harsh media chloride media.
Duplex Steel S31803 Tubes Manufacturers, Duplex Steel S31803 Tubes Suppliers, Duplex Steel S31803 Tubes Stockists, Duplex Steel S31803 Tubes Exporters
Duplex Steel S31803 Tubes Manufacturers in India, Duplex Steel S31803 Tubes Suppliers in India, Duplex Steel S31803 Tubes Stockists in India, Duplex Steel S31803 Tubes Exporters in India
We also provide accurate dimensions and surface finish in our tubing products to acquire maximum dimensional accuracy and surface finish as per the international standards at Nascent Pipe & Tubes so that our clients acquire their expected and reliable performance in their operation which should be leak free.
Duplex Steel S31803 Tubes Manufacturers In Mumbai, Duplex Steel S31803 Tubes Suppliers In Mumbai, Duplex Steel S31803 Tubes Stockists In Mumbai, Duplex Steel S31803 Tubes Exporters In Mumbai
Our ASTM A789 Duplex Steel Tubes are fabricated by following the requirements of the metallurgical fineness and respecting to international standards of manufacturing. The tubes are supplied both seamless and welded, in any length and also of diameters and wall thickness in line with client specifications. Our UNS S31803 Tubes are devised with excellent weldability and formability and can thereby be fabricated into heat exchanger, pressure vessels, boiler tubes, off-shore structures, hydraulic piping structures, and chemical tankers.
Specification of Duplex Steel S31803 Seamless / Welded Tubes
Specifications AASTM A790 / ASME SA790, ASTM A789 / ASME SA A789
Grade : UNS S31803, S32205
Size : ½”NB – 24”NB
Thickness Range : 0.3mm – 50 mm, SCH 5, SCH10, SCH 40, SCH 80, SCH 80S, SCH 160, SCH XXS, SCH XS
Outer Diameter: 6.0-630mm
Type :Seamless / ERW / Welded / Fabricated Pipes
Form : Round, Square, Rectangular, Oval, Hydraulic Etc
Length :Single Random, Double Random & Required Length
End : Plain End, Beveled End, Treaded
End Protection : Plastic Caps
Outside Finish :2B, No.4, No.1, No.8 Mirror Finish for Stainless Steel Pipes, Finish as per customer Requirements
Delivery Condition : Annealed and Pickled, Polished, Bright Annealed, Cold Drawn
Inspection, Test Reports :Mill Test Certificates, EN 10204 3.1, Chemical Reports, Mechanical Reports, PMI Test Reports, Visual Inspection Reports, Third Party Inspection Reports, NABL Approved Lab Reports, Destructive Test Report, Non Destructive Test Reports
Packing :Packed in Wooden Boxes, Plastic Bags, Steel Strips Bundled, or as per Customers Requests
Specials :Sizes and Specifications other than above can be manufactured on request
Chemical Composition of Duplex Steel Tubes
| Grade | Common Name | C% | Mn% | Si% | P% | S% | Cr% | Ni% | Mo% | N% |
|---|---|---|---|---|---|---|---|---|---|---|
| 2205 | S31803 | 0.030 | 2.00 | 1.00 | 0.030 | 0.020 | 21.0-23.0 | 4.5-6.5 | 2.5-3.5 | 0.08-0.20 |
| S32205 | 0.030 | 2.00 | 1.00 | 0.030 | 0.020 | 21.0-23.0 | 4.5-6.5 | 2.5-3.5 | 0.08-0.20 |
Mechanical Properties Of Duplex Steel Seamless & Welded Tubes
| Tensile Strength, ksi | 90 min |
|---|---|
| 0.2% Yield Strength, ksi | 65 min |
| Elongation, % | 25 min |
| Hardness [HRC] | 293 max |
Physical Properties of UNS S31803 Duplex Steel Tubes
| Density lbm/in3 | Electrical Resistivity mW•in | Thermal Conductivity (BTU/hr•ft•°F) | Heat Capacity BTU/lbm•°F | Electrical Resistivity (in x 10-6) | |
|---|---|---|---|---|---|
| at 68°F | 0.278 | 27.6 | 8.7 | 0.112 | 33.5 |
| at 212°F | 26.1 | 9.2 | 0.119 | 35.4 | |
| at 392°F | 25.4 | 9.8 | 0.127 | 37.4 | |
| at 572°F | 24.9 | 10.4 | 0.134 | 39.4 |
Equivalent Grades Of Duplex Stainless Steel Tubes
| STANDARD | UNS | WNR. |
|---|---|---|
| Duplex Steel S31803 | S31803 | 1.4462 |
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