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Duplex steel, or grades S31803 and S32205 in particular, is a vital class of stainless steels renowned for its exceptional strength and resistance to corrosion. In sectors including oil and gas, chemical processing, and maritime environments, both grades are widely employed. The original duplex stainless steel grade, S31803, was distinguished by its balanced microstructure, which was made up of around 50% austenite and 50% ferrite. Superior mechanical qualities, such as high tensile strength and outstanding impact toughness, are provided by this composition to S31803. Additionally, it shows good resistance to pitting, cracking, and crevice corrosion caused by stress corrosion. S31803 is extensively utilized in heat exchangers, pressure vessels, and pipelines.
An updated variant of S31803, S32205 is intended to provide better performance in demanding settings. Compared to S31803, it has more molybdenum and chromium, which increases its resistance to stress corrosion cracking and pitting caused by chloride. Because of this, S32205 is especially well suited for usage in high-chloride settings, including those found in chemical processing and offshore locations. Additionally, it keeps S31803's beneficial mechanical characteristics, such as its higher yield strength.
Both grades are made in a variety of forms, including tubes, which are essential for many different uses. Duplex steel tubes' strong mechanical qualities and resistance to corrosion allow them to operate exceptionally well in high-pressure and high-temperature settings. Because they contain less nickel than other high-alloy stainless steels, they are also more affordable. Duplex S31803 and S32205 tubes are essential components for sectors that need robust, anti-corrosion solutions. They are appropriate for demanding operating situations because of their dual-phase microstructure, which offers the ideal ratio of strength to durability.
Tube Specification : ASTM A789 / ASME SA789
Dimension Standard : ANSI B36.19M, ANSI B36.10
Outside Diameter (OD) : 1/8" OD TO 2"OD 3MM OD TO 38 MM OD
Thickness Range : 1MM TO 3 MM 0.028 TO 0.156 IN
Schedule : SCH 5, SCH10, SCH 40, SCH 80, SCH 80S, SCH 160, SCH XXS
Type : Seamless Tube, Welded Tube, Capillary Tubes
Form : Round Tubes, Square Tubes, Rectangular Tube
Length : Single Random, Double Random & Cut Length
End : Plain End, Beveled End, Threaded
End Protection : Plastic Caps
Outside Finish : 2B, No.1, No.4, No.8 Mirror Finish
Finish : Annealed and Pickled, Polished, Bright Annealed, Cold Drawn
External Coating : 3LPE / 3LPP/ FBE/ DFBE/ PP
Origin : Indian Origin, European Origin, Japanese Origin
Testing and Documents : Mill Test Certificates, EN 10204 3.1, Chemical Reports, Mechanical Reports, Destructive Test Report, Non Destructive Test Reports, PMI Test Reports, Visual Inspection Reports, Third Party Inspection Reports, NABL Approved Lab Reports
Packing : Packed in Wooden Boxes, Bubble wraps, Steel Strips Bundled, or as per Customers Requests
A Wide Range of ASTM A789 S31803 / S32205 Duplex Steel Tubes at Best Price.
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Duplex Steel 2205 Seamless Tubes
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Duplex Steel 2205 Bright Annealed Tubes
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Duplex Steel 2205 Rectangular Tubing
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STANDARD | WERKSTOFF NR. | UNS |
Duplex 2205 | 1.4462 | S31803 / S32205 |
Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N | Fe |
S31803 | 0.030 max | 2.00 max | 1.00 max | 0.030 max | 0.020 max | 22.0 – 23.0 | 3.0 – 3.5 | 4.50 – 6.50 | 0.14 – 0.20 | 63.72 min |
S32205 | 0.030 max | 2.00 max | 1.00 max | 0.030 max | 0.020 max | 21.0 – 23.0 | 2.50 - 3.50 | 4.50 – 6.50 | 0.8 – 0.20 | 63.54 min |
Grades | Density (g/cm 3) | Density (lb/in 3) | Melting Point (°C) | Melting Point (°F) |
S31803 / S32205 | 7.805 | 0.285 | 1420 – 1465 | 2588 – 2669 |
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Duplex Steel Tubes
We have regular exports of Duplex Steel 2205 Tubes in Europe, Kuwait, Bangladesh, UAE, Hong Kong, Poland, Bahrain, Jordan, Nepal, United States, Algeria, Yemen, Spain, Qatar, Ghana, Malaysia, Philippines, United Kingdom, Chile, Azerbaijan, Lithuania, Saudi Arabia, Iran, Trinidad & Tobago,Tunisia, Turkey, Brazil, Iran, Poland, Japan, France, USA, Belgium, Thailand, Estonia, Brazil, Vietnam, China, Chile, Costa Rica, Iran, Japan, Malaysia, Congo, Germany, Egypt, Tibet, United Arab Emirates, South Africa, South Korea, Ireland, Finland, Italy, Taiwan, Sweden, Czech Republic, Iraq, Puerto Rico, Austria, Ukraine, Mexico, Pakistan, Portugal, Netherlands, Denmark, Sri Lanka, Gabon, Kazakhstan, Bulgaria, Angola, Bhutan, Romania, Indonesia, Ecuador, Canada, Nigeria, Singapore, Argentina, Israel, Venezuela, Nigeria, Afghanistan, Bolivia, Peru, Russia, Switzerland, Libya, Kenya, Macau, New Zealand, Lebanon, Belarus, Mongolia, Croatia, Gambia, Morocco, Slovakia, Australia, Colombia, Norway, Oman, Hungary, Mexico, India, Zimbabwe, Namibia, Serbia, Greece.
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