Manufacturer, Supplier & Exporter of UNS S32760 Spool

UNS S32760, commonly known as Super Duplex Stainless Steel, is a high-performance alloy with an optimal combination of austenitic and ferritic phases. This unique duplex microstructure provides it with exceptional mechanical strength and corrosion resistance, making it ideal for harsh industrial applications, including chemical processing, offshore oil and gas pipelines, desalination plants, and marine environments. Riddhi Siddhi Impex, a reputed manufacturer and supplier in India, specializes in providing high-quality S32760 spools for demanding industrial needs..

The chemical composition of UNS S32760 includes 24–26% chromium, 6–8% nickel, 3–4% molybdenum, 0.2–0.3% nitrogen, along with minor amounts of copper and tungsten. This alloying combination significantly enhances its resistance to pitting, crevice corrosion, and stress corrosion cracking in chloride-rich and aggressive media. Its nitrogen content also contributes to higher yield strength and improved overall mechanical properties..

Mechanically, S32760 demonstrates excellent strength and toughness. It has a yield strength of approximately 550 MPa, tensile strength ranging from 750–900 MPa, and elongation of about 25%. These properties make it suitable for high-pressure piping and spool assemblies that need to withstand both mechanical and corrosive stresses. Additionally, it maintains its toughness even at sub-zero temperatures, which is crucial for offshore and cryogenic applications..

S32760 spools are manufactured to strict quality standards, ensuring dimensional accuracy and reliability. Spools are pre-fabricated pipeline segments that reduce the need for onsite welding, preserving the alloy’s duplex microstructure and maintaining its corrosion-resistant characteristics. This approach ensures high efficiency during installation and reduces downtime in industrial projects...

Riddhi Siddhi Impex offers UNS S32760 spools in various sizes and specifications, catering to industrial clients across India. Major domestic supply regions include Mumbai, Delhi, Bengaluru, Hyderabad, Chennai, Kolkata, Pune, Ahmedabad, Surat, Vadodara, Rajkot, Nagpur, Indore, Bhopal, Jaipur, Kanpur, Lucknow, Agra, Varanasi, Amritsar, Chandigarh, Mysuru, Udaipur, Jodhpur, Visakhapatnam, Coimbatore, Madurai, Kochi, Thiruvananthapuram, Mangalore, Nashik, Kolhapur, Chandrapur, Akola, Vilayat, Somnath, Dahej, Narmada, Ankleshwar, Navsari, Valsad, and Rajpipla. This extensive network ensures timely delivery and support for industrial projects nationwide.

UNS S32760 Spool

Specification

Product Name	UNS S32760 Spool
Manufacturer	Riddhi Siddhi Impex
Material	Super Duplex Stainless Steel
Standard	ASTM A789 / EN 1.4501 / UNS S32760
Application	Offshore, Oil & Gas, Chemical, Marine, Desalination Plants
Form	Spool (Prefabricated Pipe Segment)
Available Sizes	Custom Diameter and Lengths

Chemical Composition

Element	Content (%)
Carbon (C)	0.03 Max
Chromium (Cr)	24-26
Nickel (Ni)	6-8
Molybdenum (Mo)	3-4
Nitrogen (N)	0.2-0.3
Manganese (Mn)	2 Max
Iron (Fe)	Balance
Copper (Cu)	0.5 Max

Mechanical Properties

Property	Value
Tensile Strength	750-900 MPa
Yield Strength (0.2% offset)	550 MPa
Elongation	25%
Hardness	≤ 300 HB
Impact Toughness	Excellent
Corrosion Resistance	High resistance to pitting, crevice, and stress corrosion cracking

Dimension Chart (Nominal)

Nominal Pipe Size (NB)	Outside Diameter (mm)	Wall Thickness (mm)	Length
1/2"	21.3	2.77	Custom
1"	33.4	3.38	Custom
2"	60.3	3.91	Custom
4"	114.3	6.02	Custom
6"	168.3	7.11	Custom
10"	273.1	9.27	Custom
16"	406.4	12.7	Custom

Equivalent Grades

Standard	Equivalent Grade
ASTM	A789 S32760
EN	1.4501 / X2CrNiMoCuWN25-7-4
UNS	S32760

Equivalent Standards

Standard	Description
ASTM A789	Seamless and Welded Super Duplex Stainless Steel Pipe
EN 10216-5	Seamless Steel Tubes for Pressure Purposes
ISO 17781	Corrosion-Resistant Duplex Stainless Steel Tubes

Other Types of Duplex/Super Duplex Pipes

Type	Description
Duplex 2205 Pipes	Standard duplex stainless steel with good corrosion resistance and strength
Super Duplex 2507 Pipes	Higher alloyed version for extreme corrosion resistance and higher strength
Fittings & Flanges	Spools, elbows, tees, and flanges available in UNS S32760 and similar grades

UNS S32760 spools require proper fabrication techniques, including appropriate welding fillers, post-weld heat treatment, and quality inspections like NDT (Non-Destructive Testing) and PMI (Positive Material Identification). These measures ensure that the integrity of the duplex microstructure is maintained, preserving both mechanical and corrosion-resistant properties. Riddhi Siddhi Impex provides expertise and support in all aspects of spool supply, including fabrication guidance and quality assurance documentation..

Frequently Asked Questions (FAQs)

Q1: What are the main applications of UNS S32760 spools?

A1: They are used in offshore pipelines, chemical processing units, desalination plants, and marine environments requiring high corrosion resistance.

Q2: Can Riddhi Siddhi Impex supply custom lengths and diameters?

A2: Yes, spools can be manufactured as per client specifications, including custom diameters, lengths, and wall thicknesses.

Q3: How does UNS S32760 compare to Duplex 2205?

A3: UNS S32760 has higher chromium, molybdenum, and nitrogen content, giving it superior corrosion resistance and higher mechanical strength than 2205.

Q4: Which Indian cities are supplied with S32760 spools?

A4: Riddhi Siddhi Impex supplies S32760 spools across India including Mumbai, Delhi, Bengaluru, Hyderabad, Chennai, Kolkata, Pune, Ahmedabad, Surat, Vadodara, Rajkot, Nagpur, Indore, Bhopal, Jaipur, and more.