Skyland Metal And Alloys Inc.
Skyland Metal And Alloys Inc.
Girgaum, Mumbai, Maharashtra
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Duplex Steel

Duplex Stainless Steels - A Simple Guide


Duplex stainless steels are becoming more common. They are being offered by all the major stainless steel mills for a number of reasons:

  • Higher strength leading to weight saving
  • Greater corrosion resistance particularly stress corrosion cracking
  • Better price stability
  • Lower price


There is a conference on the subject of duplex every 2-3 years where dozens of highly technical papers are presented. There is a lot of marketing activity surrounding these grades. New grades are being announced frequently.

Yet, even with all this interest, the best estimates for global market share for duplex are between 1 and 3%. The purpose of this article is to provide a straightforward guide to this steel type. The advantages and disadvantages will be described.


Principle of Duplex Stainless Steels

The idea of duplex stainless steels dates back to the 1920s with the first cast being made at Avesta in Sweden in 1930. However, it is only in the last 30 years that duplex steels have begun to “take off” in a significant way. This is mainly due to advances in steelmaking techniques particularly with respect to control of nitrogen content.

The standard austenitic steels like 304 (1.4301) and ferritic steels like 430 are relatively easy to make and to fabricate. As their names imply, they consist mainly of one phase, austenite or ferrite. Although these types are fine for a wide range of applications, there are some important technical weaknesses in both types.

Duplex 2205 Steel Flanges

Duplex 2205 Steel Flanges
  • Duplex 2205 Steel Flanges
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Approx. Price: Rs 500 / Piece

Product Details:

Minimum Order Quantity1 Piece
BrandSKYLAND
Size0-1 inch, 1-5 inch, 5-10 inch, 10-20 inch, 20-30 inch, >30 inch
Material StandardDuplex 2205

With thorough understanding of the relevant industry, we Skyland Metal And Alloys Inc. are offering a wide range of Duplex Steel Flanges. These flanges are manufactured using optimum quality raw-material and advanced technology at vendors' end. In tune with different requirements of our copious clients, we customize the entire range in various sizes and shapes. Our offered range has gained exceptional value amongst our clients for its defined features.

 

Features:

  • Dimensional accuracy
  • Rust proof
  • Optimum finish


Flanges:

  • Weldneck Flanges
  • Blind Flanges
  • Spectacle Blind Flanges
  • Slip On Flanges
  • Orifice Flanges
  • High Hub Flanges
  • Socket weld Flanges
  • Flat Flanges
  • Loose Flanges
  • Square Flanges
  • Threaded Flanges
  • Ring Type Joint Flanges
  • SORF Flanges
  • BLRF Flanges
  • Groove & Tongue Flanges
  • Expander Flanges
  • ASME B16.5 Flange
  • ASME B16.47 Flange
  • ASME B16.36 Flange
  • DIN Flange PN6-PN40
  • JIS B2220/B2291 Flange
  • BS 4504 Flanges
  • BS 10 Flanges
  • Pr EN 1092-1 Flanges

 

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Duplex Steel 2205 Round Bars

Duplex Steel 2205 Round Bars
  • Duplex Steel 2205 Round Bars
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Approx. Price: Rs 400 / Kilogram

Product Details:

Minimum Order Quantity5 Kilogram
Thickness/Diameter0-1 inch, 1-2 inch, 2-3 inch, 3-4 inch, >4 inch
BrandSKYLAND METAL
Material GradeDuplex 2205
ApplicationManufacturing, Construction
Single Piece Length3 meter, 6 meter

We SKYLAND METAL AND ALLOYS INC. offer quality range of Duplex Steel Round Bar, which are durable , and corrosion free. These Duplex steel Round Bar are offered in various specifications, shapes and sizes. We meet customized requirements of our clients, Our Duplex Round Bar is widely used in a range of applications like structural, mechanical and general engineering purposes Like
Duplex Steel Round Bar 2205
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Duplex Buttweld Fittings

Duplex Buttweld Fittings
  • Duplex Buttweld Fittings
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Approx. Price: Rs 200 / Piece

Product Details:

Minimum Order Quantity1 Piece
Size1/2 inch, 3/4 inch, 1 inch, 2 inch, 3 inch
ApplicationStructure Pipe, Gas Pipe, Hydraulic Pipe, Chemical Fertilizer Pipe, Pneumatic Connections

Skyland Metal & Alloys Inc. holds a large stock of stainless and duplex steel butt welding fittings according to ANSI/ASME. Our program includes seamless butt welding fittings from 1/2" NB to 12"NB and welded butt welding fittings from 1/2" to 24" NB from Sch5-Sch XXs
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Duplex Steel UNS31803 2205 Tubes

Duplex Steel UNS31803 2205 Tubes
  • Duplex Steel UNS31803 2205 Tubes
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Approx. Price: Rs 250 / Kilogram

Product Details:

Minimum Order Quantity1 Kilogram
Size1/2 inch, 3/4 inch, 1 inch, 2 inch, 3 inch
Unit Pipe Length3 meter, 6 meter

We Skyland Metal & Alloys Inc. are engaged in providing our clients with high quality pipes and tubes which are made of Super Duplex steel Tubes. Our range of super duplex steel tubes are widely used as heat exchangers in refinery industries, petrochemical plants, paper & pulp industries, sugar & beverage industries.

Specifications:

  • Standards: ASTM / ASME SA 790
  • Grades: UNS NO. S 31803, S 32205, S 32550, S 32750, S 32760
  • Range: 1 mm OD upt o 254 mm OD in 0.2 TO 20 mm thickness.
  • Type: Seamless, ERW, Welded, CDW
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Duplex Steel Long Radius Bend

Duplex Steel Long Radius Bend
  • Duplex Steel Long Radius Bend
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Approx. Price: Rs 350 / Piece

Product Details:

Minimum Order Quantity1 Piece
Size1/2 inch, 3/4 inch, 1 inch , 2 inch, 3 inch
ApplicationStructure Pipe, Plumbing Pipe, Chemical Handling Pipe, Gas Pipe, Drinking Water Pipe

Skyland Metal and Alloys Inc. is one of the Manufacturer & Exporter of Long Radius Bend,Duplex Steel L.R.Bend, Carbon Steel L.R. Bend, Copper Nickel L.R. Bend, 2D,3D,5D,6D,8D,Etc..,

Specifications:-

  • Size :- 1/2" To 24"NB
  • Schedule :- Sch5 ,Sch10 , Sch20, Sch30, Sch40, STD, Sch80, XS, Sch120, Sch140, Sch160, XXS
  • Radius :- 2D,3D,5D,6D,8D, 10D,20D and with customized radius
  • Type :- Seamless/Welded/ERW/EFW
  • Form:- Long Radius Bend, Piggable Bend, Hot Bend, Induction Bend.
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Duplex S31803 Fasteners

Duplex S31803 Fasteners
  • Duplex S31803 Fasteners
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Approx. Price: Rs 8 / Piece

Product Details:

Minimum Order Quantity1 Piece
BrandSKYLAND
SizeM1 - M250
Quantity Per Pack100

We are proud that SKYLAND is the world’s number one bespoke producer of Duplex bolting. Duplex Stainless Steel Grades are similar to standard duplex, but they contain a higher content of Chromium, thus enhancing the corrosion resistance and mechanical properties. SKYLAND produces fasteners In All Three Types of Duplex.

SKYLAND has released it own special Duplex Fastener Specification.

Other material groups:

  • Super Duplex
  • High Nickel Alloys
  • Titanium
  • Stainless Steel & others
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Duplex Steel S31803 / 2205 Sheet

Duplex Steel S31803 / 2205 Sheet
  • Duplex Steel S31803 / 2205 Sheet
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Approx. Price: Rs 280 / Kilogram

Product Details:

Minimum Order Quantity5 Kilogram
Size (feet X feet)4*8/5*10
Thickness0-1 mm, 1-2 mm, 2-3 mm, 3-4 mm, 4-5 mm, >5 mm

Being a well established organization, we SKYLAND METAL AND ALLOYS INC. bring forth an excellent assortment of Duplex Steel Sheet & Plate. Our offered products are widely appreciated by our prestigious clients for their precise design and easy installation. These products can also be availed in various sizes, designs and other related specifications. Our provided products are manufactured by a team of our vendors' adept professionals utilizing quality approved stainless steel and advanced technology.

 

Features:

  • Compact design
  • Smooth finish
  • Rust proof

Specifications:

  • Grades: S31803, S32205, 1.4462, F51 ; Duplex 2205, Duplex 2507
  • Range: 0.5 mm To 200 mm thick in 1000 mm TO 2500 mm width & 2500 mm to 12500 mm
  • Types: Sheet, Plates, Coils, Flat, Strips, Profile, Blank ,Circle, Ring
  • Standards: ASTM / ASME SA 790
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Duplex Steel Pipes

Duplex Steel Pipes
  • Duplex Steel Pipes
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Approx. Price: Rs 400 / Kilogram

Product Details:

Minimum Order Quantity2 Kilogram
Size1/2 inch, 3/4 inch, 1 inch, 2 inch, 3 inch
Unit Pipe Length3 meter, 6 meter

Under the strict supervision of our vendors' experienced professionals, we SKYLAND METAL AND ALLOYS INC. are offering a wide collection of Duplex Steel Pipes & Tubes. Our offered range is availed in a variety of sizes, shapes and other such specifications to choose from. The products offered by us are precisely designed at our vendors' highly advanced manufacturing unit following industry defined guidelines. The offered products can also be availed from us at the industry leading prices.

 

Features:

 

  • Sturdiness
  • Easy installation
  • Corrosion-resistance

Specifications:

  • Grades: S31803, S32205, 1.4462, F51
  • Duplex 2205, Duplex 2507
  • Types: Seamless / Erw / Welded/ Fabricated
  • Standards: ASTM / ASME SA 790
  • Form: Round, square, rectangular, hydraulic etc.

Value Added Services:

  • Hot Dipped Galvanizing
  • Epoxy & FBE Coating
  • Electro Polish
  • Draw & Expansion
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Duplex Steel WNRF SORF S31803 Flanges

Duplex Steel WNRF SORF S31803 Flanges
  • Duplex Steel WNRF SORF S31803 Flanges
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Approx. Price: Rs 250 / Piece

Product Details:

Minimum Order Quantity1 Piece
BrandSKYLAND
Size0-1 inch, 1-5 inch, 5-10 inch, 10-20 inch, 20-30 inch, >30 inch
Material StandardASTM A105, ASTM A182, ASTM A351, ANSI B16.5

ASTM A182 UNS S31803 Duplex Steel Blind Flanges manufacturer, stockist & supplier SKYLAND METAL AND ALLOYS INC. has ASTM A182 UNS S31803 Duplex Steel Blind, SORF , Flat, WNRF and all kinds of Flanges inventory to fulfill your project’s needs, buy ASTM A182 UNS S31803 Duplex Steel Blind Flanges at best price & fast delivery. Supplying ASTM A182 UNS S31803 Duplex Steel Blind, FLAT, SORF, WNRF Flanges from approved manufactures and stockists based in the UK, India, Europe and USA

Specifications:

  • Grades: S31803, S32205, 1.4462, F51 ; Duplex 2205, Duplex 2507
  • Standard: ASTM / ASME A/SA 182

Types:

  • Duplex Steel Blind Flanges
  • Duplex Steel Weld Neck Flanges
  • Duplex Steel Reducing Flanges
  • Duplex Steel Screwed Flanges
  • Duplex Steel Socket Weld Flanges
  • Duplex Steel Slip On Flanges
  • Duplex Steel Long Weld Neck Flanges
  • Duplex Steel Lapped Joint Flanges
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Duplex Steel S31803 1.4462 F51 Buttweld Fittings

Duplex Steel S31803 1.4462 F51 Buttweld Fittings
  • Duplex Steel S31803 1.4462 F51 Buttweld Fittings
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Approx. Price: Rs 150 / Piece

Product Details:

Minimum Order Quantity5 Piece
Size1/2 inch, 1/2 inch, 3/4 inch, 1 inch, 2 inch, 3 inch
ApplicationStructure Pipe, Structure Pipe, Gas Pipe, Hydraulic Pipe, Chemical Fertilizer Pipe, Pneumatic Connections
Thread SizeNPT / BSP
BrandSKYLAND

By using abilities of our accomplished experts, we at Skyland Metal And Alloys Inc. are manufacturing, exporting and supplying a comprehensive assortment of Duplex Steel S31803 Buttweld Fittings.

With genuine aims to protect and elevate our notoriety in the business sector, SKYLAND METAL AND ALLOYS INC. are putting forth an exhaustive arrangement of Duplex Steel S31803 Buttweld Fittings. Our offered extent is made in a manner that we can keep up internationally acknowledged guidelines. Inferable from their astounding elements, these Duplex Steel S31803 Buttweld Fittings are to a great extent requested for associating two pipes. Furthermore, customers can benefit the offered range from us in an extensive variety of particulars.

We offer these Duplex Steel Butt Weld Fittings in various sorts, for example, Duplex Steel Seamless Butt weld pipe fittings, Duplex Steel Welded Butt weld pipe fittings, Duplex Steel Elbow (45 deg, 90 deg, 180 deg), Duplex Steel Equal and Unequal (diminishing) Tees, Duplex Steel Equal and Unequal (decreasing) Cross, Duplex Steel Concentric and Eccentric Reducer, Duplex Steel Long and Short Stubends, and Duplex Steel Pipe End Caps.



Specifications:

  • Grades: S31803, S32205, 1.4462, F51 ; Duplex 2205, Duplex 2507

Types:

  • Bend (Long & Short)
  • Elbow (180 Deg., 90 Deg. & 45 Deg.)
  • Tee (Equal & Unequal)
  • Reducer (Concentric & Eccentric)
  • CAP, Stub end (Long &Short)
  • Nipple (Barrel)

Application:

  • Petrochemicals Plants
  • Chemical Plants
  • Industrial Machinery
  • Power Industry
  • Government Companies
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Duplex Steel S31803 Forged Fittings

Duplex Steel S31803 Forged Fittings
  • Duplex Steel S31803 Forged Fittings
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Approx. Price: Rs 180 / Piece

Product Details:

Minimum Order Quantity10 Piece
ConnectionWelded, Male, Female, Flange
Size1/2, 3/4, 1, 2, 3
ApplicationStructure Pipe, Gas Pipe, Hydraulic Pipe, Chemical Fertilizer Pipe
Material GradeS31803

We SKYLAND METAL AND ALLOYS INC. offer premium quality of Duplex Steel ASTM A182 F51 /F60 forged fittings which are made with premium quality of steel. These fittings are manufactured utilising premium quality raw materials that are produced from reliable vendors of the market. We Supple Duplex Steel and Super Duplex Steel Forged Fittings in all types of grades like UNS No. S 31803 , S 32205, S 32550 , S 32750 , S 32760

We SKYLAND METAL AND ALLOYS INC. offer as per the standard specifications. Premium QUality Producst At Highly Competitive Prices. These fittings sand outlets can be customised as per clients requirement also.

Specifications:

  • Grades: S31803, S32205, 1.4462, F51 ; Duplex 2205, Duplex 2507
  • Types: Union
  • Union, Coupling, Full Coupling, Cross, Forged Elbow, Hex Nipple, Plug, Bushing, Boss, Insert, Adapter, Socket, Forged Tee, Olets, Weldolet, Sockolet, Elbowlet, Thredolet, Nipolet, Latrolet, Sweepolet, Half Coupling
  • DUPLEX STEEL : S31803, S32205, 1.4462, F51 ;

  • Forged Fittings Type Threaded Fittings

    • 90° Elbow

    • 45° Elbow

    • Tee

    • Cross

    • Full Coupling

    • Half Coupling

    • Pipe Cap

    • Hexa Head Bushing

    • Hex Head Plug

    • Street Elbow

    • Bull Plug

    • Boss

    • Swage Nipple

    • Pipe Nipple

    • Adapter

    • Union ( Male / Female)

    • Branch Outlet

    • 90° Elbow Outlet

    • 45° Lateral Tee

    • Lateral Outlet

    • Nipple Branch Outlet

  • Forged Fittings Type Socket Weld Fittings

     

    • Reducers

    • Socket Weld Eccentric Reducers

    • Socket Weld Equal Tee

    • Socket Weld Unequal Tee

    • Socket Weld Adapters

    • Socket Weld Pipe Nipples

Brand:SKYLAND

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Duplex Steel Threaded 2205 Fasteners

Duplex Steel Threaded 2205 Fasteners
  • Duplex Steel Threaded 2205 Fasteners
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Approx. Price: Rs 3 / Piece

Product Details:

Minimum Order Quantity1 Piece
BrandSKYLAND

SKYLAND METAL AND ALLOYS INC. is your source for Duplex 2205 Stainless Steel Heavy Hex Bolts. When you need Duplex 2205 Stainless Steel Heavy Hex Bolts fast call SKYLAND METAL AND ALLOYS INC. and we will make it happen

Specifications:

  • Grades: S31803, S32205, 1.4462, F51 ; Duplex 2205, Duplex 2507
  • Standards: ASTM / ASME SA 790
  • Types: Bolts Stud Bolts, Hex Head Bolts, Socket Hexagon Head Screw Anchor Bolts, U-Bolts, J Bolts, Mushroom Head Square Neck Bolts , T- Head Bolts , Wing Screw , Eye Bolt , Eye Bolt, Foundation Bolts, Structural Bolts.
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ASTM/ASME A790 UNS S2205 Seamless Pipes

ASTM/ASME A790 UNS S2205 Seamless Pipes
  • ASTM/ASME A790 UNS S2205 Seamless Pipes
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Approx. Price: Rs 350 / Kilogram

Product Details:

Minimum Order Quantity1 Kilogram
Size1/2 inch, 3/4 inch, 1 inch, 2 inch, 3 inch, >3 inch
Unit Length3m, 6m
Surface FinishMill Finished, Finished Polished

We SKYLAND METAL AND ALLOYS INC. provide ASTM/ASME A790 UNS S2205 Seamless Pipes, which are fabricated using commercial, electric furnace bearing, consumable and electrode vacuum melted quality steel. The seamless steel is available in hot rolled, cold drawn, turned and roto rolled finishes. All the pipes are pressure tested on machines after finishing process. Pipes are weighed, measured & stenciled, and then extra coating is applied if required. Available in various sizes such as thin, small, precise, & slender, these are widely used in steam boilers and pipelines and installed with high & supercritical steam conditions.
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Duplex Steel ASTM/ASME A789/A790 UNS S31803 SMLS Pipes

Duplex Steel ASTM/ASME A789/A790 UNS S31803 SMLS Pipes
  • Duplex Steel ASTM/ASME A789/A790 UNS S31803 SMLS Pipes
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Approx. Price: Rs 400 / Kilogram

Product Details:

Minimum Order Quantity1 Kilogram
Size1/2 inch, 3/4 inch, 1 inch, 2 inch, 3 inch
Steel GradeASTM/ASME A789/A790 UNS S31803
Unit Pipe Length3 meter, 6 meter

Skyland Metal & Alloys Inc. is one of the leading Manufacturers,Suppliers & Exporters of UNS NO S 31803 Pipes and Tubes that are actually manufactured from high quality of standard raw materials and are designed as per with national and international standards. Duplex Steel UNS NO S 31803 Pipes and tubes (also referred as WNR 1.4462 Pipes and Tubes) have a microstructure that contains both ferrite and austenite. WHen these UNS S31803 Pipes and tubes are melted,it solidifies from the liquid phase to a completely ferritic structure.As The Material Cools, approximately half of it changes to an authentic structure.We Offer these Duplex Steel Products in custom-made shapes and sizes as per the requirements given by our clients, and that too at an affordable and market leading prices.

Specification :-

  • Grades :- Duplex Steel - UNS NO. S 31803
  • Standards :- ASTM,ASME and API
  • Specifications :- ASTM A 789,790 / ASME SA 789,790
  • Size :- 1/2" NB to 12" NB IN
  • Seamless Pipes and Tubes Sizes :- 1/2" NB - 8"NB
  • Welded Pipes and Tubes Sizes :- 6" NB To 24" NB
  • Outer Diameter :- 6.0 - 630 MM
  • Thickness :- 0.5 mm - 45mm
  • Length :- Single Random , Double Random and Required Length
  • Schedule :- SCH20 SCH30, SCH40,STD, SCH80
  • Form :- Round,Square,Rectangle,Hydraulic,Etc.,
  • Type :- Seamless/ERW/Welded/Fabricated/CDW
  • End :- Plain End, Beveled End ,Threaded.
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Duplex Steel S31803 2205 Bars

Duplex Steel S31803 2205 Bars
  • Duplex Steel S31803 2205 Bars
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Approx. Price: Rs 200 / Kilogram

Product Details:

Minimum Order Quantity1 Kilogram
Thickness/Diameter0-1 inch, 1-2 inch, 2-3 inch, 3-4 inch, >4 inch
Material GradeS31803 2205
ApplicationManufacturing, Construction, School/College Workshop
Single Piece Length3 meter, 6 meter

We Skyland Metal And Alloys Inc. are prominet Manufacturers , Importers and Stockholders of various sizes of Duplex Steel Bars.

Please find the Characteristic properties below

  • Its Good to very good resistance to uniform corrosion Good to very good resistance to pitting and crevice corrosion
  • High resistance to stress corrosion cracking and corrosion fatigue
  • High mechanical strength
  • Good abrasion and erosion resistance
  • Good fatigue resistance
  • High energy absorption
  • Low thermal expansion
  • Good weldability Duplex Stainless Steel Applications
  • Pulp and paper industry
  • Desalination plants
  • Flue-gas cleaning
  • Cargo tanks and pipe systems in chemical tankers
  • Seawater systems
  • Firewalls and blast walls on offshore platforms
  • Bridges
  • Components for structural design
  • Storage tanks
  • Pressure vessels
  • Heat exchangers
  • Water heaters
  • Rotors, impellers and shafts

Reinforcing bars for concrete structures General characteristics Ferritic-austenitic stainless steel also referred to as duplex stainless steels, combine many of the beneficial properties of ferritic and austenitic steels.

Due to the high content of chromium and nitrogen, and often also molybdenum, these steels offer good resistance to localised and uniform corrosion. The duplex micro We are dedicatedly engaged in offering a commendable range of Duplex Steel Bars Besides being manufactured from high-grade raw-material and latest technology, the offered products are inspected properly by our vendors' expert professionals. Owing to features like durability and sturdiness, the offered range is exceptionally valued by our precious clients. The offered products are available with us in various sizes and shapes at affordable price.

Features:

  • Durability
  • Resistant against corrosion
  • Accurate dimensions

Specifications:

  • Grades: S31803, S32205, 1.4462, F51
  • Duplex 2205, Duplex 2507
  • Standards: ASTM / ASME SA 790
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Piyush Bhansali (Director)
Black Stone Building, Plot No. 185, 4th Flr, Off No. 7, Dr. Mitrasen Mahimtura Marg
Girgaum, Mumbai- 400004, Maharashtra, India


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