Super Duplex Steel S32750 Pipes

Super Duplex Steel S32750 Pipes are high-performance alloy pipes, also known as super duplex UNS S32750, super duplex 2507 pipes, and 2507 stainless steel pipes. These pipes have an equal proportion of austenitic and ferritic microstructures, which provides excellent corrosion resistance, mechanical strength, and resistance to stress corrosion cracking. Their capacity to work in harsh chemical and marine conditions makes them ideal for applications such as oil and gas, desalination, and chemical processing.

Super Duplex Steel S32750 Pipe Prices

The price of UNS S32750 pipes in India varies according to pipe type, size, surface finish, and order quantity. The key pricing elements that consumers should be aware of are listed below.

Approximate price range

Super Duplex S32750 pipes are priced between INR 750 and INR 1,200 per kg in India. Welded and ERW variants are more economical than seamless variants.

Cost per foot (approx.)

A standard 1-inch 2507 stainless steel pipe (Schedule 40) costs approximately INR 400 to INR 900 per foot, depending on wall thickness and the supplier.

Factors affecting price

The primary factors that influence the final pricing of these pipes are:

Raw material cost: Super Duplex S32750 contains 25% chromium, 7% nickel, and 4% molybdenum. The global prices of molybdenum and nickel directly impact pipe costs.

Pipe type and finish: The cost of seamless pipes is higher than that of welded ones. Compared to standard mill finishes, mirror and electropolished finishes are more expensive.

Order volume and dimensions: Bulk orders reduce cost per kilogram. Custom dimensions, tight tolerances, and special third-party inspection requirements increase the overall price.

Available Types of Super Duplex Steel S32750 Pipes

Super Duplex S32750 pipes are manufactured in 4 primary types to meet different pressure ratings, fabrication needs, and end-use conditions.

Super Duplex Steel S32750 pipes seamless
Super Duplex Steel S32750 pipes are welded
Super Duplex Steel S32750 pipes ERW
Super Duplex Steel S32750 pipes EFW

Super Duplex Steel S32750 Pipes Specifications

Parameter	Standard / Value
Standard	ASTM A790 / ASME SA790
Grade	UNS S32750
Outer Diameter (OD)	6.35 mm to 508 mm
Wall Thickness	0.5 mm to 50 mm
Pipe Schedules	Sch 5S to Sch XXS
Length	Up to 12 metres (single/double random)
Forms Available	Seamless, Welded, ERW, EFW
Surface Finish	2B, No. 4, Pickled & Passivated, Mirror

Chemical Composition of Super Duplex Steel S32750 Pipes

The chemical composition of Super Duplex S32750 pipes defines its outstanding corrosion resistance and structural integrity. The high chromium, molybdenum, and nitrogen content together give this alloy a PREN (Pitting Resistance Equivalent Number) of 42 or above.

Element	Composition (%)
Chromium (Cr)	24.0 – 26.0
Nickel (Ni)	6.0 – 8.0
Molybdenum (Mo)	3.0 – 5.0
Nitrogen (N)	0.24 – 0.32
Manganese (Mn)	1.20 max
Carbon (C)	0.030 max
Silicon (Si)	0.80 max
Phosphorus (P)	0.035 max
Sulphur (S)	0.020 max

Mechanical Properties of Super Duplex Steel S32750 Pipes

These mechanical values confirm why Super Duplex S32750 pipes outperform standard duplex and austenitic grades under high-pressure and high-stress conditions.

Property	Value
Tensile Strength	795 MPa (115,000 psi) min
Yield Strength (0.2% offset)	550 MPa (80,000 psi) min
Elongation	15% min
Hardness (Brinell)	310 HB max
Density	7.8 g/cm³
Melting Point	1350°C – 1410°C

Super Duplex S32760 Pipe Sizes

The table below specifies the ASTM A790 UNS S32760 sizes available:

Nominal Pipe Size (NPS)		Outside Diameter (OD)
mm	inch	mm
3 mm	1/8 Inch	10.3 mm
6 mm	1/4 Inch	13.7 mm
10 mm	3/8 Inch	17.1 mm
15 mm	1/2 Inch	21.3 mm
20 mm	3/4 Inch	26.7 mm
25 mm	1 Inch	33.4 mm
32 mm	1.1/4 Inch	42.2 mm
40 mm	1.1/2 Inch	48.3 mm
50 mm	2 Inch	60.3 mm
65 mm	2.1/2 Inch	73.0 mm
80 mm	3 Inch	88.9 mm
100 mm	4-inch	114.3 mm
125 mm	5-inch	141.3 mm
150 mm	6-inch	168.3 mm
200 mm	8-inch	219.1 mm
250 mm	10-inch	273.1 mm
300 mm	12-inch	323.8 mm
350 mm	14-inch	355.6 mm
400 mm	16-inch	406.4 mm
450 mm	18-inch	457.2 mm
500 mm	20-inch	508.0 mm
600 mm	24-inch	610

Super Duplex UNS S32750 Pipe Schedule and Wall Thickness

The table below lists the 2507 stainless steel pipe schedule and wall thickness:

Nominal	O.D. Inches	10s	10	40s & Std	40	80s & E.H.	80	160
1/8	0.405	0.049	0.049	0.068	0.068	0.095	0.095
1/4	0.54	0.065	0.065	0.088	0.088	0.119	0.119
3/8	0.675	0.065	0.065	0.091	0.091	0.126	0.126
1/2	0.84	0.083	0.083	0.109	0.109	0.147	0.147	0.187
3/4	1.05	0.083	0.083	0.113	0.113	0.154	0.154	0.218
1	1.315	0.109	0.109	0.133	0.133	0.179	0.179	0.25
1 1/4	1.66	0.109	0.109	0.14	0.14	0.191	0.191	0.25
1 1/2	1.9	0.109	0.109	0.145	0.145	0.2	0.2	0.281
2	2.375	0.109	0.109	0.154	0.154	0.218	0.218	0.343
2 1/2	2.875	0.12	0.12	0.203	0.203	0.276	0.276	0.375
3	3.5	0.12	0.12	0.216	0.216	0.3	0.3	0.437
3 1/2	4	0.12	0.12	0.226	0.226	0.318	0.318
4	4.5	0.12	0.12	0.237	0.237	0.337	0.337	0.531
4 1/2	5	0.247	0.355
5	5.563	0.134	0.134	0.258	0.258	0.375	0.375	0.625
6	6.625	0.134	0.134	0.28	0.28	0.432	0.432	0.718
7	7.625	0.301	0.5
8	8.625	0.148	0.148	0.322	0.322	0.5	0.5	0.906
9	9.625	0.342	0.5
10	10.75	0.165	0.165	0.365	0.365	0.5	0.593	1.125
11	11.75	0.375	0.5
12	12.75	0.18	0.18	0.375	0.406	0.5	0.687	1.312
14	14	0.188	0.25	0.375	0.437	0.5	0.75	1.406
16	16	0.188	0.25	0.375	0.5	0.5	0.843	1.593
18	18	0.188	0.25	0.375	0.562	0.5	0.937	1.781

Key Features of Super Duplex Steel S32750 Pipes

Super Duplex S32750 pipes offer 5 performance advantages that make them the preferred material in corrosive, high-pressure, and thermally demanding environments.

Excellent corrosion resistance
High mechanical strength
Excellent fatigue and erosion resistance
Good weldability and fabrication
High thermal conductivity and low thermal expansion

Applications of Super Duplex Steel S32750 Pipes

Super duplex 2507 pipes are used in various industries where resistance to extreme temperatures, high pressures, and chloride environments is required.

Oil and gas industry
Desalination plants
Chemical processing
Marine industry and shipping
Heat exchangers and power generation

How to Choose the Right Super Duplex Steel S32750 Pipes Supplier

Choosing the right 2507 stainless steel pipe supplier directly impacts long-term performance, project schedules, and product quality. Before placing an order, consider the following criteria:

Evaluate the manufacturer's technical expertise: A supplier with in-house metallurgical expertise can help you with grade selection, schedule choices, and compliance requirements. This minimises procurement risk significantly.

Check grade availability and product range: The supplier should carry UNS S32750 in all required pipe types, such as seamless, welded, ERW, and EFW, so you are not forced to work with multiple vendors for a single project.

Verify quality certifications and testing capabilities: Look for ISO 9001 certification and in-house testing for PMI, hydrostatic pressure, hardness, and mechanical properties. Mill test certificates (MTCs) in compliance with EN 10204 3.1 or 3.2 are standard.

Examine the strength of raw material sourcing: Reliable suppliers source steel from certified mills. Traceability from raw material to finished pipe reduces the possibility of inferior alloys reaching your plant.

Assess customisation capabilities: Projects often require precise lengths, end finishes, or stringent dimensional tolerances. A capable manufacturer can handle cut-to-length pipes, cut ends, and threaded designs as required.

Review delivery timelines and supply capacity: A supplier like Sachiya Steel International with adequate inventory and a strong logistics network can meet urgent and bulk requirements without compromising on lead times.

Super Duplex Steel S32750 Pipes Suppliers

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ma international

mumbai - maharashtra - india

2 Year