Duplex Steel 2205 Pipes

Duplex Steel 2205 is a two-phase stainless steel composed of about equal parts austenite and ferrite. It is also known as UNS S32205, EN 1.4462 and ASTM 2205 in the industry. This grade offers outstanding corrosion resistance, high tensile strength, and resistance to stress corrosion cracking, making it a preferred choice for demanding environments such as oil & gas, chemical processing, desalination, and marine applications. It offers a significant cost advantage without compromising performance, as it contains less nickel than standard austenitic grades.

2205 Duplex Stainless Steel Pipe

Duplex 2205 pipe prices in India are valued based on pipe size, grade certification, and order volume. Here is a broad look at prices to help you plan your purchases.

Approximate price range: Duplex 2205 pipes are priced between ₹400 and ₹600 per kg. The seamless pipes typically cost more than welded variants due to the manufacturing process.

Factors affecting price: The key factors include raw material costs (nickel and molybdenum), pipe schedule, surface finish, appropriate certifications (such as NACE or PED), and order volume. Bulk orders of more than 1,000 kg are often reasonably priced.

Available Types of 2205 stainless steel pipe:

Duplex 2205 pipes are manufactured in 5 primary types to cover a wide range of installation and performance requirements.

Duplex Steel 2205 EFW Pipes
Duplex Steel 2205 Seamless Pipes
Duplex Steel 2205 Welded Pipes
Duplex Steel 2205 ERW Pipes
Duplex Steel 2205 Custom Pipes

Duplex 2205 Pipe Specifications

Duplex 2205 pipes are designed as per the required international standards and are available in various sizes, schedules, and finishes. The following table summarises the core specifications.

Parameter	Details
Standards & grades	ASTM A813, ASTM A469, ASTM A269, ASTM A240, ASTM A182 (F44), ASTM A814, ASTM A312, ASTM A249
Pipe sizes	1/8" NB to 36" NB (custom sizes available on request)
Pipe schedules	SCH 5, SCH 10, SCH 40, SCH 80, SCH 160, XXS
Forms available	Seamless, Welded, EFW, ERW, Custom Fabricated
Wall thickness	0.5 mm to 25 mm (schedule- and diameter-dependent)
Finish	Annealed & Pickled (AP), Bright Annealed (BA), No. 1, No. 4, Mirror Finish, Sandblasted

Chemical Composition Of Duplex Steel 2205 Pipes

Duplex 2205 consists of a two-phase structure by carefully controlling the metals. Chromium and molybdenum help it resist corrosion, and nitrogen makes it much stronger.

Element	Symbol	Percent by weight
Chromium	Cr	22.0 – 23.0%
Nickel	Ni	4.5 – 6.5%
Manganese	Mn	2.0% max
Silicon	Si	1.0% max
Phosphorous	P	0.03% max
Sulfur	S	0.02% max
Carbon	C	0.03% max
Nitrogen	N	0.1 – 0.2%
Molybdenum	Mo	3.0 – 3.5%
Iron	Fe	Balance

Mechanical Properties Of Duplex Steel 2205 Pipes

Duplex 2205 delivers significantly higher strength than standard 304 or 316 grades, allowing the use of thinner wall sections without reducing load capacity. The key mechanical values are listed below.

Mechanical property	Value
0.2% Yield strength	65 ksi min (448 MPa min)
Tensile strength	90 ksi min (620 MPa min)
Elongation	25% min
Hardness (HRC)	293 max (Brinell)

Size Chart Of A790 UNS S32205 Pipes

The duplex steel S32205 pipe size specifications are mentioned in the table below:

Pipe Outer Diameter in mm	Pipe Wall Thickness in mm	inches	Schedule	Kg/m
13.72	2.24	1/4	40S	0.64
13.72	3.02	1/4	80S	0.81
17.15	1.65	3/8	10S	0.64
13.72	1.65	1/4	10S	0.50
17.15	2.31	3/8	40S	0.86
21.34	2.11	1/2	10S	1.02
21.34	2.77	1/2	40S	1.29
17.15	3.20	3/8	80S	1.12
21.34	3.73	1/2	80S	1.65
26.67	2.11	3/4	10S	1.30
26.67	3.91	3/4	80S	2.23
33.40	2.77	1	10S	2.13
26.67	2.87	3/4	40S	1.71
33.40	3.38	1	40S	2.54
33.40	4.55	1	80S	3.29
33.40	6.352)	1	160	4.30
42.16	2.77	1¼	10S	2.73
42.16	3.56	1¼	40S	3.44
42.16	4.85	1¼	80S	4.53
42.16	6.352)	1¼	160	5.69
48.26	2.77	1½	10S	3.16
48.26	3.68	1½	40S	4.11
48.26	5.08	1½	80S	5.49
60.33	2.77	2	10S	3.99
60.33	3.91	2	40S	5.52
60.33	5.54	2	80S	7.60
60.33	8.742)	2	160	11.29
73.03	3.05	2½	10S	5.35
73.03	5.16	2½	40S	8.77
73.03	7.01	2½	80S	11.59
88.90	3.05	3	10S	6.56
88.90	5.49	3	40S	11.47
88.90	7.62	3	80S	15.51
88.90	11.132)	3	160	21.67
101.60	3.05	3½	10S	7.53
101.60	5.74	3½	40S	13.78
101.60	8.08	3½	80S	18.92
114.30	3.05	4	10S	8.50
114.30	6.02	4	40S	16.32
114.30	8.56	4	80S	22.67
114.30	13.492)	4	160	34.05
141.30	6.55	5	40S	22.10
141.30	9.53	5	80S	31.44
141.30	15.882)	5	160	49.87
168.28	3.4	6	10S	14.04
168.28	7.11	6	40S	28.69
168.28	10.97	6	80S	43.21
168.28	14.27	6	120	54.75
168.28	18.262)	6	160	68.59
219.08	8.18	8	40S	43.20
219.08	12.7	8	80S	65.63
219.08	18.23	8	120	91.30
219.08	23.012)	8	160	112.97

Schedule Chart of 2205 Stainless Steel Pipe

The table below provides details of the 2205 stainless steel pipe schedule chart.

1/8" IPS (.405" O.D.)	3 1/2" IPS (4.000" O.D.)
Pipes, SCH 40, 80	Pipes, SCH 10, 40, 80, 160, XXH
1/4" IPS (.540" O.D.)	4" IPS (4.500" O.D.)
Pipes, SCH 10, 40, 80	Pipes, SCH 10, 40, 80, 160, XXH
3/8" IPS (.675" O.D.)	5" IPS (5.563" O.D.)
Pipes, SCH 10, 40, 80	Pipes, SCH 10, 40, 80, 160, XXH
1/2" IPS (.840" O.D.)	6" IPS (6.625" O.D.)
Pipes, SCH 5, 10, 40, 80, 160, XXH	Pipes, SCH 5, 10, 40, 80, 120, 160, XXH
3/4" IPS (1.050" O.D.)	8" IPS (8.625" O.D.)
Pipes, SCH 10, 40, 80, 160, XXH	Pipes, SCH 5, 10, 40, 80, 120, 160, XXH
1" IPS: (1.315′ O.D.)	10" IPS (10.750" O.D.)
Pipes, SCH 5, 10, 40, 80, 160, XXH	Pipes, SCH 10, 20, 40, 80 (.500), TRUE 80 (.500)
1-1/4" IPS (1.660" O.D.)	12" IPS (12.750" O.D.)
Pipes, SCH 10, 40, 80, 160, XXH	Pipes: SCH 10, 20, 40(.375), TRUE40(.406), SCH80(.500)
1-1/2" IPS (1.900" O.D.)	14" IPS (14.000" O.D.)
Pipes, SCH 10, 40, 80, 160, XXH	Pipes, SCH10 (.188), SCH40 (.375)
2" IPS (2.375" O.D.)	16" IPS (16.000" O.D.)
Pipes, SCH 10, 40, 80, 160, XXH	2205 Pipes, SCH10(.188), SCH40(.375)
2 1/2" IPS (2.875" O.D.)	18" IPS (18.000" O.D.)
2205 Pipes, SCH 10, 40, 80, 160, XXH	2205 Pipes, SCH-40 (.375)
3" IPS (3.500" O.D.)	2205 Pipes, SCH 5, 10, 40, 80, 160, XXH

Key Features of 2205 Duplex Stainless Steel Pipe

Duplex 2205 pipes combine 8 key performance characteristics that make them one of the most specified grades in high-demand industrial environments.

Corrosion resistance
High strength
Good toughness and ductility
Good weldability
Cost effectiveness
Resistance to stress corrosion cracking
Long service life
Balanced Microstructure

Applications Of Duplex Steel 2205 Pipes

Duplex 2205 pipes are used across 10 major industries where corrosion resistance and structural integrity are non-negotiable.

Oil and gas industry
Chemical processing
Desalination plants
Pulp and paper industry
Marine applications
Structural and architectural use
Food and beverage industry
Power generation
Mining and mineral processing
Automotive and transportation

How to Choose the Right Duplex 2205 Pipe Supplier

Choosing the right duplex 2205 pipe supplier is about more than price. Follow the key criteria before you order to avoid quality and delivery problems.

Evaluate the manufacturer's technical expertise: Check whether the supplier has in-house technical staff who can advise on grade selection, schedule, and compliance. A supplier with metallurgical knowledge adds real value to your procurement process.

Check grade availability and product range: A reliable supplier stocks Duplex 2205 pipes across multiple schedules, sizes, and forms, such as seamless, welded, and EFW. Limited availability often results in delays or substitutions that don't meet spec.

Verify quality certifications and testing capabilities: Look for suppliers with ISO 9001 certification and the ability to provide mill test reports (MTR), hydrostatic test results, and third-party inspection support where required.

Examine the strength of raw material sourcing: The quality of pipes depends on the quality of the raw material. Ensure that the supplier purchases coils and billets from approved mills that have traceable records for each temperature or batch.

Assess customisation capabilities: Non-standard pipe lengths, unique end finishes, and precise tolerances are common requirements for projects. A reliable supplier meets these needs without long delays or large minimum orders.

Review delivery timelines and supply capacity: Ensure the supplier can meet your project deadline. Enquire about stock availability, lead times for non-standard items, and whether they provide logistics services for domestic and international deliveries.