DM Duplex 2205 is a nitrogen enhanced duplex stainless steel that was developed to combat common corrosion problems encountered with the 300 series stainless steels. “DM Duplex” describes a family of stainless steels that are neither fully austenitic, like 304 stainless, nor purely ferritic, like 430 stainless. The structure of 2205 duplex stainless steel consists of austenite pools surrounded by a continuous ferrite phase. In the annealed condition, 2205 contains approximately 40-50% ferrite. Often referred to as the work horse grade, 2205 is the most widely used grade in the duplex family of stainless steels.
The advantage of a duplex structure is that it combines the favorable qualities of a ferritic alloy (stress corrosion cracking resistance and high strength) with those of an austenitic alloy (ease of fabrication and corrosion resistance).
Usage of 2205 DM Duplex stainless steel should be limited to temperatures below 600° F. Extended elevated temperature exposure can embrittle 2205 stainless.
2205 duplex stainless steel is a cost effective solution for many applications where the 300 series stainless steels are susceptible to chloride stress corrosion cracking. Stress corrosion cracking occurs when stainless steels are subjected to tensile stress, while in contact with solutions containing chlorides. Increasing temperatures also increase the susceptibility of stainless steels to stress corrosion cracking.
The combination of chromium, molybdenum and nitrogen convey the good resistance of 2205 to chloride pitting and crevice corrosion. This resistance is extremely important for services such as marine environments, brackish water, bleaching operations, closed loop water systems and some food processing applications. The high chromium, molybdenum and nitrogen contents of 2205 provide corrosion resistance superior to common stainless steels, such as, 316L and 317L in most environments and DM Special Steel Ltd has been actively involved in ensuring the best quality of the same to our clients.
This exotic alloy is used in oil and gas exploration, chemical processing industries also make use of this alloy. Most of the processing equipment utilizes DM Duplex 2205. It is also used by storage and transportation units of industries. Pulp and paper digesters, liquor tanks and paper machines also use DM Duplex 2205. It is highly suitable for usage in marine environments.
What are the characteristics of DM Duplex 2205?
High resistance to chloride stress corrosion cracking
Resistance to chloride pitting and crevice corrosion
Seamless DM Duplex Pipes / Tubes: ASTM A 789 / 790, ASME SA 789 / 790
Welded DM Duplex Pipes / Tubes: ASTM A 789 / 790, ASME SA 789 / 790
DM Duplex Pipe Fittings & Flanges: ASTM A 815, ASME SA 815
Why DM Special Steel Ltd is best Supplier of 2205 DM Duplex Steel Seamless Welded Pipes Tubes ?
at DM Special Steel Ltd we ensure that our clients get a world class buying experience. Our mill reports are in accordance with EN10204 NACE 3.1, NACE 3.2. Our products go through appropriate testing, both in Government and private laboratories. Thus, even third party inspection consolidates our claims about superior quality. Our team adopts professional packaging methods to ensure that the products reach our clients in their best form, without getting affected by the adversities of the environment. If, by any chance (however small it may be), the products fail to satisfy the customers, we act on our product replacement scheme to ensure that they receive better. We also enjoy , , OHSAS Certifications. All these factors have helped us gain the trust of consumers and we are continuously growing as top 10 suppliers of 2205 DM Duplex Stainless Steel Seamless Welded Pipes Tubes in INDIA.
We are authorised Dealer & Distributor of renowned manufacturers of 2205 DM Duplex Stainless Steel Seamless Welded Pipes Tubes
we are having ready stock & dealership of below manufacturers:
COLUMBUS- South Africa
JINDAL ( JSL ) -INDIA
SANDMEYER STEEL -USA & Canada
SPECIAL STEEL LTD -UK
NIPPON STEEL & SUMITOMO METALS - japan
OUTOKUMPU - Finland & INDIA
MEGAMEX:Texas - USA
SANDVIK - Sweden & INDIA
TIOGA - America
SCHOELLER BLECKMANN - England & Dubai
Stainless Steel DM Duplex 2205, UNS S31803, UNS S32205, WNR 1.4462 Pipes and Tubes Available Product Forms
SS 2205 DM Duplex Welded and Seamless Tubes, Pipes
SS 2205 DM Duplex Hydraulic and Instrumentation Tubes
SS 2205 DM Duplex Coiled Tubing
SS 2205 DM Duplex Capillary Tubes
SS 2205 DM Duplex Seam Welded and Cold Redrawn Pipe and Tubes
SS 2205 DM Duplex Seam Welded, Cold Redrawn and Annealed Pipes and Tubes
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
Markings on Stainless Steel DM Duplex 2205, UNS S31803, UNS S32205, WNR 1.4462 Seamless/Welded Pipes
The full identification of the pipe should be continuously marked down its whole length, including:
Nominal Pipe Size (Nominal Bore)
Schedule (Wall Thickness)
Method of Manufacture (Seamless or Welded)
Manufacturer’s Name or Symbol
Stainless Steel DM Duplex 2205, UNS S31803, UNS S32205, WNR 1.4462 Stainless Steel Pipes, Tube Chemical Composition
Chemical Composition %
Stainless Steel DM Duplex 2205, UNS S31803, UNS S32205, WNR 1.4462 Stainless Steel Pipes, Tube Mechanical Properties
DM Duplex Stainless Steel
Tensile Strength (Mpa)
Yield Strngth (Mpa)
Stainless Steel DM Duplex 2205, UNS S31803, UNS S32205, WNR 1.4462 Stainless Steel Pipes, Tube Stock and Supply Range
OUTOKUMPU ( FINLAND & INDIA ) : DM Duplex Steel 2205 & 2507 Coil and sheet, Bar, Welded pipe & Plate Manufacturers ---
MEGAMEX ( TEXAS USA ) : Mega Mex supplies LDX2101, 2205, Ferralium 255, Zeron 100 and 2507 in the form of plate, sheet, strip, bar, pipe, tubing, pipe fittings, flanges and weld wire.
SCHOELLER BLECKMANN ENGLAND & DUBAI : Schoeller-Bleckmann (UK) is a major stockholder and distributor of Stainless Steel Tube, Pipe & Hollow Bar.
SANDVIK ( SWEDEN & INDIA ) : DM Duplex stainless steels / Sandvik SAF 2507, Sandvik SAF 2707 HD, Sandvik SAF 3207 HD / TUBE, PIPE, FITTINGS AND FLANGES Manufacturers in SWEDEN
(DM Duplex stainless steel plate USE : DM Duplex stainless steel plate is often used for storage tanks. High corrosion and erosion resistance is a must for storage tanks, whether the designer wants to prevent leakage during desalinization, avoid contamination in pharmaceutical or food processing, or store chips as well as black and white liquor for the pulp and paper industry.)
We have exported our material to numerous countries in the world including but not limited to Kuwait, Peru, UK, Singapore, Poland, Iraq, Malaysia, Serbia, Turkey, Yemen, Australia, Lebanon, Oman, Srilanka, Egypt, Angola, Canada, Madagascar, Saudi Arabia, Indonesia, UAE, Italy, Jordan, Qatar, USA, Brazil, Nigeria, South Africa, Kuwait, Mexico, New Zealand, Netherlands, Germany, Venezuela, Iran, Denmark, Spain, Bahrain & many other countries....