2205 is a duplex (austenitic-ferritic) stainless steel containing about 40 – 50% ferrite in the annealed condition. 2205 has been a practical solution to chloride stress corrosion cracking problems experienced with 304/304L or 316/316L stainless. The high chromium, molybdenum and nitrogen contents provide corrosion resistance superior to 316/316L and 317L stainless in most environments. 2205 is not suggested for operating temperatures above 600°F.

The design strength of 2205 is significantly higher than 316/316L, often permitting lighter wall construction. 2205 has good notch impact toughness down to temperatures below – 40°F. 2205 is welded with E2209 or ER2209 fillers.

Stainless Seamless Fluid Pipe Quality Control

1. Raw materials pipe blank quality classification: high quality, medium, economical
2. Raw materials inspection after receive in factory
3. After pickled, tube will be grinded careful to less defect
4. Multiple cold drawn/rolled process for precision dimension
5. Standard heat-treated of continuous annealed/solution for better property, intergranular corrosion
6. Full Inspection: ET, UT, Hydraulic Test, Penetration Test, Grinded, Sand Blast, Print Making

*Besides bleow, we can supply comfortable price with equivalents quality for you! Welcome contact us.

We also can supply other kinds of:

• Seamless Stainless Steel Pipe & Tube
• Welded Stainless Steel Pipe & Tube
• U Type Stainless Steel Pipe & Tube
• Coil Type Stainless Steel Pipe & Tube(Max 300meter), seamless or welded
• Annealed Pickled AP Stainless Steel Pipe & Tube (Ra ≤5μm)
• Bright Annealed BA Stainless Steel Pipe & Tube (Ra ≤8μm)
• Mechanical Polished MP Stainless Steel Pipe & Tube (Ra ≤8μm)
• Electro Polished EP Stainless Steel Pipe & Tube (Ra ≤25μm)
• Sanitary Stainless Steel Pipe & Tube
• Capilllary Stainless Steel Pipe & Tube
• Instrument Stainless Steel Pipe & Tube

UNS	AISI/ASTM	DIN/EN
S31803/S32205	2205	1.4462	F51
Chemical Composition:
%	C	Mn	P	S	Si
Min
Max	0.03	2	0.03	0.02	1
	Ni	Cr	Mo	N
Min	4.5	21	2.5	0.08
Max	6.5	23	3.5	0.2
Physical Performance:
Heat Treatment	T*S	Y*S	El	Hardness
	MPA	MPA	%	HB
1020-1100	620	450	25	≤290

Form	ASTM
Rod, bar and shape	A 276, A 484
Plate, sheet and strip	A 240, A 480
Seamless and welded pipe	A 790, A 999
Seamless and welded tubing	A 789, A 1016
Fitting	A 815, A 960
Forged or rolled pipe flange and forged fitting	A 182, A 961
Billet and bar for forging	A 314, A 484

Duplex Pipe

If you are in the market for the best in duplex welded pipe and duplex welded tube, look no further than BRISMET. We have an extensive production range in which we offer pipe sizes from ½ of an inch to 144 inches (Nominal Pipe Size), as well as tubing sizes on request. In addition to all these great capabilities, we have unmatched wall thickness, length and testing.

A heat treatment is offered on sizes up to and including 36 inches. To insure that a quality product is supplied, BRISMET maintains the rigorous ISO 9001:2008, PED, ASME U and ASME Nuclear (NPT) certifications. Our commitment to providing you with quality duplex welded tube and pipe is backed by our acceptance on most Authorized Manufacturers Lists (AMLs). BRISMET also has experienced knowledge behind the production of duplex welded within the very strict regulations of pipe, oil and gas specifications and testing requirements.

Specifications of Duplex welded pipe:

A790

A928

A999

In addition to holding our company to the highest standards, BRISMET also maintains a full inventory of Duplex 2205 pipe in diameters from 2 inches through 24 inches. And we also keep a full stock of Duplex 2205 pipe in Schedules 10S through 40S, as well as some 80S. However, we also carry other pipe sizes in our inventory. No matter what you need for your welded pipe project, let BRISMET be your guide in duplex welded pipe.

Alloy	UNS	Description
2205/2205D	S31803/S32205	Duplex 2205/2205D is used in environments where resistance to general corrosion and chloride stress corrosion cracking is important.
2205	S31803	Duplex 2205 is used in environments where resistance to general corrosion and chloride stress corrosion cracking is important.
2205D	S32205	Duplex 2205D is used in environments where resistance to general corrosion and chloride stress corrosion cracking is important.

The chemical composition of 2205 Duplex Stainless Pipe consists of the elements being used in the following content i.e. – 22% chromium, 3% molybdenum and about 5 to 6% nickel. Because of the content, in terms of quantity of chromium present in the alloy of this grade, this stainless steel is also referred to as 22cr Duplex 2205 Pipe.

Although when the 2205 duplex stainless tubing material has been exposed to temperatures above 572°F, even when the exposure is for a short period of time, the duplex 2205 seamless tube is subject to embrittlement.  Therefore, 2205 duplex pipe is not recommended to be used at a temperature above 572°F. Due to the presence of higher chromium, molybdenum, and nitrogen contents, 2205 duplex stainless steel tubes demonstrates superior corrosion resistant properties in comparison to the more conventionally used austenitic stainless steel grades 316 and 316L in most environments.

The presence of these three elements in higher amounts is also what provides the duplex 2205 seamless pipe with a higher resistance to pitting and crevice corrosion, even when the alloy has been exposed to oxidizing and acidic solutions alike. Duplex 2205 pipe supplier in Mumbai note that this alloy has the ability to resist chloride ion stress related corrosion cracking, that too at  a range where the temperatures can rise up to about 302°F.  The presence of ferrite in the duplex 2205 welded pipe is what provides for an enhanced performance of this stainless steel grade in caustic media containing environments.

2205 duplex stainless steel Pipe Specification

Pipe Specifications	SA 789 alloy 2205, astm a790 duplex 2205, a790 gr 2205 ASTM A999 / ASME SA 999 ASTM A928 / ASME SA 928 ASTM A790 / ASME SA 790
Pipe Standard	DIN, JIS, ASTM, EN, GB, AISI, ASME Duplex 2205 Pipe Supplier
Pipe Thickness	0.3mm – 50 mm
Duplex 2205 Welded Pipe size	5.0 mm – 1219.2 mm
Duplex 2205 Seamless Pipe Outer Diameter	6.00 mm OD up to 250 mm OD, Sizes up to 12” NB
Duplex 2205 EFW Pipe size	5.0 mm – 1219.2 mm
Duplex 2205 Welded Tube Size	6.35 mm OD To 152 mm OD
Duplex 2205 Seamless Tube Size	3.35 mm OD To 101.6 mm OD, 15 NB to 150 NB IN
Duplex 2205 tubing wall thickness	0.020″ –0.220″ (special wall thicknesses available)
Pipe & Tube Swg & Bwg	10 Swg., 12 Swg., 14 Swg., 16 Swg., 18 Swg., 20 Swg.
Duplex 2205 Pipe & Tube Finish	Polished, AP (Annealed & Pickled), BA (Bright & Annealed), MF, NO.1, NO.4, 2B, BA, HL, 8K, Mirror finish,etc
Duplex 2205 Pipe Schedule	SCH 5, SCH10, SCH 40, SCH 80, SCH 80S, SCH 160, SCH XXS, SCH XS
Duplex 2205 Pipe & Tube Length	Single Random, Double Random, Standard & Cut length
Duplex 2205 Pipe & Tube Form	Round, Square, Hollow, Rectangular, Hydraulic, Coiled, Straight Pipes, “U” Shape, Pan Cake Coils etc.
Duplex 2205 Pipe & Tube Type	Duplex 2205 Seamless / ERW/ EFW / Welded / Fabricated / CDW / DOM / CEW Pipe
Duplex 2205 Pipe & Tube End	Plain End, Beveled End, Treaded Pipe.
Duplex 2205 Tube Application	Boiler and Heatexchanger, Oil Tube, Fluid Tube, Gas Tube,
Pipe Marking	All Duplex 2205 Pipes are marked as follows: Grade, Standard, OD, Thickness, Length, Heat No. (Or according to the customer’s request.)
Pipe Value Added Service	Draw & Expansion as per required Size & Length, Polish (Electro & Commercial) Annealed & Pickled Bending, Machining Etc.
Material Test Certificates (MTC)	Third Party Inspection Report 100% Radiography Test Report, Raw Materials Certificate Material Test Certificates (MTC) as per EN 10204/3.1B, EN 10204 3.1 and EN 10204 3.2 Heat Treatment Charts Fumigation Certificates Form A for Generalized System of Preferences (GSP) Duplex 2205 Tubes HS Code Commercial Invoice Laboratory Test Certificate from Govt. Approved Lab. Manufacturer Test Certificate
Specialized in	Large Diameter Duplex 2205 Pipe Supplier Duplex 2205 Capillary Tube & Other Odd SizeDuplex 2205 Heat Exchanger & Condenser Tubes
We can also thread, cut, and groove Duplex 2205 Pipes & Tubes  to meet your specifications.

Alloy	UNS	Description
2205 Pipe	S31803 Pipe	Duplex 2205 is appropriate in situations where resistance to common corrosion and chloride stress corrosion breaking is critical.
2205/2205D Pipe	UNS S31803 Pipe / UNS S32205 Pipe	Duplex 2205/2205D is appropriate in situations where resistance to common corrosion and chloride stress corrosion breaking is critical.
2205D Pipe	S32205 Pipe	Duplex 2205D is appropriate in situations where resistance to common corrosion and chloride stress corrosion breaking is critical.

Types	Out diameter	Wall thickness	Length
NB Sizes (in stock)	1/8” ~ 8”	SCH 5 / SCH 10 / SCH 40 / SCH 80 / SCH 160	Upto 6 Meters
Duplex 2205 Seamless Pipe (Custom Sizes)	5.0mm ~ 203.2mm	As per requirement	Upto 6 Meters
Duplex 2205 Welded Pipe (in Stock + Custom Sizes)	5.0mm ~ 1219.2mm	1.0 ~ 15.0 mm	Upto 6 Meters

What is Duplex 2205 pipe?

2205 duplex stainless steel tubing is the most widely used alloy grade across various industrial sectors. The 2205 duplex stainless tubing has been characterized by high yield strength, which means that the yield strength of this alloy is double or two times that of a conventionally used austenitic stainless steel grade. The 2205 duplex stainless steel pipe also demonstrates good fatigue strength, as well as outstanding resistance to stress related corrosion cracking, crevice corrosion, pitting, erosion corrosion, and general corrosion in severe environments.

Alloy 2205 is a ferritic-austenitic stainless steel used in situations that demand good corrosion resistance and strength. Also referred to as Grade 2205 Duplex, Avesta Sheffield 2205, and UNS 31803, some of the more critical design features of Alloy 2205 include:

High resistance to stress corrosion cracking, fatigue, and erosion

Higher heat conductivity and lower thermal expansion compared to austenitic steels

Outstanding and uniform resistance to pitting and crevice corrosion

Good sulfide stress corrosion cracking resistance

Useful up to 600°F

Because of this unique set of benefits, Alloy 2205 is the perfect choice for a wide variety of industries. Some typical applications include:

Heat exchangers, tubes, and pipes for the oil and gas, and desalination industry

Pressure vessels for chemical and chloride processing and transport

Cargo tanks, piping, and welding consumables for chemical tankers

At Continental Steel we distribute Stainless Steel Alloy 2205 in a broad range of forms and sizes such as sheet, coil, plate, and pipe. As with everything we sell, our Alloy 2205 meets various industrial standards from organizations like ASTM, ASME, ISO, UNS, and EN.

PHYSICAL PROPERTIES

Property	Measurement
Density (lb/in3)	0.278
Elongation (min %)	25
Minimum Yield (psi) – S31803	65,000
Minimum Yield (psi) – S32205	70,000
Minimum Tensile (psi) – S31803	90,000
Minimum Tensile (psi) – S32205	95,000
Max Hardness (HRC)	30

Corrosion Resistance

2205 duplex stainless steelis 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 2205to 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 Citizen Metals 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 Duplex 2205. It is also used by storage and transportation units of industries. Pulp and paper digesters, liquor tanks and paper machines also use Duplex 2205. It is highly suitable for usage in marine environments.

Stainless Steel Duplex 2205, UNS S31803, UNS S32205, WNR 1.4462 Stainless Steel Pipes, Tube Stock and Supply Range

Sr. No.	Product Description	Outside Diamter, OD (in mm)	Wall Thickness, WT (in mm)
1	Duplex Stainless Steel Round Pipe/Tube	6mm – 630mm	0.5mm-30mm
2	Duplex Stainless Steel Square Pipe/Tube	12.7mm* 12.7mm to 300mm* 300mm	0.5mm-30mm
3	Duplex Stainless Steel Rectangular Pipe/Tube	10*20mm to 100*200mm	0.5mm-30mm
4	Duplex Stainless Steel Colour Coated Pipe/Tube	6mm to 630mm	0.5mm-30mm
5	Duplex Stainless Steel Ornamental Tubes	12.7mm to 76.2mm	0.5mm-2.0mm
6	Duplex Stainless Steel Electropolished Pipes/Tubes	12.7mm to 250mm	0.5mm-30mm
7	Duplex Stainless Steel Slot Round Pipe/Tube	12.7mm to 76.2mm	0.5mm-2.0mm
8	Duplex Stainless Steel Triangle Tube	16mm to 85mm	0.5mm-3.0mm
9	Duplex Stainless Steel Hexagonal Tube	13mm to 85mm	0.5mm-2.0mm
10	Duplex Stainless Steel Handrail Tube	–	0.5mm-2.0mm
11	Duplex Stainless Steel U Shaped Tube	20mm to 200mm	0.5mm-2.0mm
12	Duplex Thin-Wall Stainless Steel Tube	22mm*0.7mm to 108mm*2.0mm	0.5mm-2.0mm
13	Duplex Inner/Outside Polished Stainless Steel Tube, Pipes	12.5mm to 203.2mm	1.0mm – 5mm
14	Duplex Stainless Steel Capillary Tube	0.28mm to 10mm	0.08mm – 1.2mm
15	Duplex Stainless Steel Seamless Tube	6mm to 430mm	0.8mm – 30mm

Duplex 2205 Tube is stainless steel tube. It belongs to a family of stainless steels called as the duplex steels. There are different groups of this material. The pipes of this family could be formed either by cold drawing of by hot rolling and welding. The Alloy 2205 Seamless Tube is cold drawn and it has less absolute roughness. The seamless ones are less strong than the Duplex SS 2205 Welded Tubing but are highly precise in dimension. The precision in dimension is useful in highly sensitive applications which require precision in measurements and calculations. The specialty of Duplex 2205 Seamless Tube is that it contains a dual nature. It is neither ferritic nor austenitic but contains the best of both parts. The Duplex 2205 Tube is a super duplex grade tube and it contains ferritic and austenitic steel phases in its structure. Therefore the strength and the corrosion resistance properties are improved. The Duplex 2205 Seamless Tube could be used in applications like the marine and underwater application which are exposed to chloride ion rich environments.

The ASTM A790 Duplex 2205 Welded Tube is stronger and also possesses the same corrosion resistance properties. It has less absolute roughness but has more strength than the seamless pipes. The 2205 Duplex Tube applications require different shapes, sizes and pressure classes of the pipes. The SA 789 Alloy 2205 4 inch Tube is used in medium range fluid transfers. There are other sizes that range from ½” up to 42” and more. Depending on the application requirements, the pipes are sometimes custom made. These are used in petrochemical, chemical, food processing, pulp and paper, oil and gas and organic acid production industries as well. The Duplex SS 2205 Schedule 40 Tube can withstand high pressure and is used in condensers and heat exchangers.

PHYSICAL PROPERTIES

Density: 0.285 lbs/in3 7 .88 g/cm3

Thermal Conductivity: BTU-ft/hr/ft2/°F (W/m-° K):
At 68 – 212 °F (20 – 100 °C): 11.0 (19.0)

Mean Coefficient of Thermal Expansion: in/in/°F (µm/m•K):
32 – 212 °F: 7.6 x 10·6 (13.7)

Modulus of Elasticity: ksi (MPa):
27.5 x 103 (190 x 103) in tension

FINISHES

# 1 – Hot rolled annealed and descaled. It is available in strip, foil and ribbon. It is used for applications where a smooth decorative finish is not required.
# 2D – Dull finish produced by cold rolling, annealing and descaling. Used for deep drawn parts and those parts that need to retain lubricants in the forming process. # 2B – Smooth finish produced by cold rolling, annealing and descaling. A light cold rolling pass is added after anneal with polished rolls giving it a brighter finish than 2D.
#BA- Bright annealed cold rolled and bright annealed
#CBA- Course bright annealed cold rolled matte finish and bright anneal
#2 – Cold Rolled
# 2BA- Smooth finish produced by cold rolling and bright annealing. A light pass using highly polished rolls produces a glossy finish. A 2BA finish may be used for lightly formed applications where a glossy finish is desired in the formed part. Polished – Various grit finish for specific polish finished requirements.
* Not All Finishes are Available for All Alloys – Consult Sales for Applicable Finishes.