Manufacturer, Supplier & Exporter of Super Duplex Stainless Steel Shim

Super Duplex Stainless Steel Shims are high performance shim materials made from super‑duplex stainless steel alloys (for example UNS S32750 / S32760, often referred to as “2507” super duplex). These alloys contain a balanced mix of austenite and ferrite phases, but with higher chromium, molybdenum, and nitrogen content compared to “regular” duplex steels. As a result, they offer excellent resistance to pitting and crevice corrosion, high mechanical strength, good toughness, and better resistance to stress corrosion cracking, especially in chloride environments or aggressive media such as seawater, chemicals or industrial saline atmospheres.

Super Duplex Stainless Steel Shim is a high-performance industrial material designed for extreme environments requiring superior corrosion resistance and mechanical strength. Made from advanced alloys like UNS S32750 and S32760, these shims offer a combination of austenitic and ferritic microstructures, giving them excellent resistance to pitting, crevice corrosion, and stress corrosion cracking—especially in chloride-rich or marine applications. Due to their high chromium, molybdenum, and nitrogen content, super duplex shims outperform conventional stainless steels and even standard duplex grades in aggressive chemical environments.

Riddhi Siddhi Impex, a leading manufacturer and domestic supplier based in Mumbai, specializes in producing and distributing Super Duplex Stainless Steel Shims across India. With state-of-the-art machinery and precision slitting capabilities, the company offers shims in various thicknesses and widths, maintaining strict tolerances and surface finishes. They manufacture shims from high-quality super duplex coils, ensuring properties like excellent flatness, edge condition, and dimensional accuracy. The company adheres to international quality standards such as ASTM, EN, and JIS, and can provide material with third-party inspection reports if required

These shims are widely used in industries such as offshore oil and gas, petrochemical processing, marine engineering, desalination, and pulp and paper plants. Thanks to their high yield strength, tensile strength, and fatigue resistance, Super Duplex Shims provide long service life in high-pressure and high-corrosion applications. Riddhi Siddhi Impex supports its customers by offering custom-cut sizes, coil or sheet form, and value-added services like polishing and surface coating..

As a Super Duplex Stainless Steel Shim domestic supplier, Riddhi Siddhi Impex caters to various key industrial hubs in India. Their supply network includes major cities like Mumbai, Delhi, Bengaluru (Bangalore), Hyderabad, Chennai, Kolkata, Pune, Ahmedabad, Surat, Vadodara, and Rajkot, ensuring prompt delivery and customer support. Their manufacturing units in and around Mumbai help maintain strong inventory levels and reduce lead times for urgent orders.

Super Duplex Stainless Steel Shim (2507)

Specification

Grade	Super Duplex Stainless Steel 2507
Type	Super Duplex (Ferritic-Austenitic)
Standards	ASTM A240, ASTM A789, UNS S32750, EN 1.4410
Finish	2B, BA, No.4, Mirror Finish
Form	Shim, Strip, Sheet, Coil
Thickness Range	0.03 mm to 3 mm (customizable)
Width Range	Up to 1500 mm
Length	Cut to length, coil, or sheet form

Chemical Composition (% by weight)

Element	Typical % in 2507
Chromium (Cr)	24.0 – 26.0%
Nickel (Ni)	6.0 – 8.0%
Molybdenum (Mo)	3.0 – 5.0%
Nitrogen (N)	0.24 – 0.32%
Carbon (C)	≤ 0.03%
Manganese (Mn)	≤ 1.2%
Silicon (Si)	≤ 0.8%
Phosphorus (P)	≤ 0.035%
Sulfur (S)	≤ 0.02%
Iron (Fe)	Balance

Mechanical Properties

Property	Typical Value
Tensile Strength	790 - 860 MPa
Yield Strength (0.2% offset)	550 - 650 MPa
Elongation (in 50 mm)	≥ 20%
Hardness (Brinell)	≤ 310 HB

Dimension Chart

Thickness (mm)	Width (mm)	Length (mm)
0.03 – 0.10	Up to 1000	Coil or Custom Length
0.11 – 1.00	Up to 1250	Cut to Length or Sheet
1.01 – 3.00	Up to 1500	Sheet or Strip

Equivalent Grades

Standard	Equivalent Grade
UNS	S32750 / S32760
EN	1.4410 / 1.4501
JIS	SUS329J4L
Werkstoff	1.4410

Equivalent Standards

Region	Standard
USA	ASTM A240 / A789 / A790
Europe	EN 10088-2
Japan	JIS G4304 / G4305
India	IS 6911

Other Types of Stainless Steel Shims

Grade	Type	Application
304	Austenitic	General Purpose, Food Industry
316	Austenitic	Marine, Chemical
430	Ferritic	Decorative, Appliances
410	Martensitic	Wear Resistant, Tools
2205	Duplex	Industrial Applications
2507	Super Duplex	Highly Corrosive Environments

Beyond the major metros, the company also delivers to tier-2 and tier-3 cities such as Nagpur, Indore, Bhopal, Jaipur, Kanpur, Lucknow, Agra, Varanasi, Amritsar, and Chandigarh. In southern India, cities like Mysuru (Mysore), Udaipur, Jodhpur, Visakhapatnam, Coimbatore, Madurai, Kochi, Thiruvananthapuram, and Mangalore also benefit from Riddhi Siddhi Impex’s wide domestic reach. Their logistics system is capable of handling bulk and custom shipments efficiently, making them a reliable supplier for industrial and engineering applications nationwide.

Frequently Asked Questions (FAQs)

Q1: What are the main benefits of Super Duplex Stainless Steel Shim?

A1: It offers superior corrosion resistance, high strength, and excellent toughness, making it suitable for aggressive environments like offshore, chemical, and marine applications.

Q2: Can Riddhi Siddhi Impex supply custom thickness and sizes?

A2: Yes, we provide custom cut lengths, thicknesses, widths, and finishes as per client requirements.

Q3: Which Indian cities do you supply Super Duplex Stainless Steel Shim to?

A3: We supply across major cities including Mumbai, Delhi, Bengaluru, Hyderabad, Chennai, Kolkata, Pune, Ahmedabad, Surat, Vadodara, Rajkot, Nagpur, Indore, Bhopal, Jaipur, and many more.

Q4: What standards do your Super Duplex Stainless Steel Shims comply with?

A4: Our shims comply with ASTM, EN, JIS, and Indian IS standards with full traceability and certification.